Andreas H Mahnken

Summary

Affiliation: RWTH Aachen
Country: Germany

Publications

  1. ncbi request reprint Multislice spiral computed tomography of the heart: technique, current applications, and perspective
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 28:388-99. 2005
  2. ncbi request reprint Evaluation of automated attenuation-based tube current adaptation for coronary calcium scoring in MDCT in a cohort of 262 patients
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Germany
    Eur Radiol 17:1850-7. 2007
  3. doi request reprint Image fusion in dual energy computed tomography: effect on contrast enhancement, signal-to-noise ratio and image quality in computed tomography angiography
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Aachen, Germany
    Invest Radiol 44:1-6. 2009
  4. doi request reprint Semiautomated versus manual evaluation of liver metastases treated by radiofrequency ablation
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    J Vasc Interv Radiol 21:245-51. 2010
  5. doi request reprint Semi-automated quantification of hepatic lesions in a phantom
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 44:82-8. 2009
  6. doi request reprint Dose reduction during CT fluoroscopy: phantom study of angular beam modulation
    Christian Hohl
    Department of Diagnostic Radiology, University of Technology of Aachen, Pauwelsstrasse 30, D 52057 Aachen, Germany
    Radiology 246:519-25. 2008
  7. ncbi request reprint Dual-source computed tomography for assessing cardiac function: a phantom study
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 42:491-8. 2007
  8. ncbi request reprint Automated volumetry of solid pulmonary nodules in a phantom: accuracy across different CT scanner technologies
    Marco Das
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Invest Radiol 42:297-302. 2007
  9. doi request reprint Dose reduction for semi-automated volumetry of hepatic metastasis in MDCT studies
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Germany
    Invest Radiol 45:77-81. 2010
  10. doi request reprint Impact of different vein catheter sizes for mechanical power injection in CT: in vitro evaluation with use of a circulation phantom
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital, RWTH, Aachen, Germany
    Cardiovasc Intervent Radiol 32:25-31. 2009

Detail Information

Publications101 found, 100 shown here

  1. ncbi request reprint Multislice spiral computed tomography of the heart: technique, current applications, and perspective
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 28:388-99. 2005
    ..In combination with experimental approaches toward the assessment of aortic valve function and myocardial viability, cardiac MSCT holds the potential for a comprehensive examination of the heart using one single examination technique...
  2. ncbi request reprint Evaluation of automated attenuation-based tube current adaptation for coronary calcium scoring in MDCT in a cohort of 262 patients
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Germany
    Eur Radiol 17:1850-7. 2007
    ..Automated attenuation-based tube current adaptation in coronary calcium scoring is technically feasible, can decrease patient dose, and reduces variation in image noise as a sign of improved dose usage...
  3. doi request reprint Image fusion in dual energy computed tomography: effect on contrast enhancement, signal-to-noise ratio and image quality in computed tomography angiography
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Aachen, Germany
    Invest Radiol 44:1-6. 2009
    ..The aim of this study was to evaluate the influence of different weighting factors on contrast enhancement, signal-to-noise ratio (SNR), and image quality in image fusion in dual energy computed tomography (DECT) angiography...
  4. doi request reprint Semiautomated versus manual evaluation of liver metastases treated by radiofrequency ablation
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    J Vasc Interv Radiol 21:245-51. 2010
    ..To determine the accuracy of semiautomated volume and density measurements of liver metastases from colorectal and breast cancer before and after radiofrequency (RF) ablation compared with manual evaluation...
  5. doi request reprint Semi-automated quantification of hepatic lesions in a phantom
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 44:82-8. 2009
    ..Thus, the purpose of our study was to assess the accuracy of semi-automated RECIST and volumetric measurements of liver lesions in a liver phantom with different CT acquisition parameters...
  6. doi request reprint Dose reduction during CT fluoroscopy: phantom study of angular beam modulation
    Christian Hohl
    Department of Diagnostic Radiology, University of Technology of Aachen, Pauwelsstrasse 30, D 52057 Aachen, Germany
    Radiology 246:519-25. 2008
    ..To prospectively evaluate, in a phantom, the dose reductions achievable by using angular beam modulation (ABM) during computed tomographic (CT) fluoroscopy-guided thoracic interventions...
  7. ncbi request reprint Dual-source computed tomography for assessing cardiac function: a phantom study
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 42:491-8. 2007
    ..To investigate the influence of heart rate and temporal resolution on the assessment of global ventricular function with dual-source computed tomography (DSCT)...
  8. ncbi request reprint Automated volumetry of solid pulmonary nodules in a phantom: accuracy across different CT scanner technologies
    Marco Das
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Invest Radiol 42:297-302. 2007
    ..The accuracy of automated volumetry for pulmonary nodules in a phantom using different CT scanner technologies from single-slice spiral CT (SSCT) to 64-slice multidetector-row CT (MDCT) was compared...
  9. doi request reprint Dose reduction for semi-automated volumetry of hepatic metastasis in MDCT studies
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Germany
    Invest Radiol 45:77-81. 2010
    ..To investigate the performance of semi-automated measurements (RECIST, volume) of hepatic metastases in multidetector-row computed tomography (MDCT) under normal-dose- and simulated low-dose-protocols...
  10. doi request reprint Impact of different vein catheter sizes for mechanical power injection in CT: in vitro evaluation with use of a circulation phantom
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital, RWTH, Aachen, Germany
    Cardiovasc Intervent Radiol 32:25-31. 2009
    ..In summary, intravenous catheters with sizes of 14-20 G are suitable for CT angiography using an injection protocol with a high flow rate and a high-iodine-concentration contrast medium...
  11. ncbi request reprint Influence of a small field-of-view size on the detection of coronary artery calcifications with MSCT: in vitro and in vivo study
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 16:358-64. 2006
    ..The use of small FOV sizes resulted in an improved detection of coronary calcifications influencing the risk stratification for further cardiac events in MSCT coronary calcium scoring...
  12. doi request reprint Semi-automated measurement of hyperdense, hypodense and heterogeneous hepatic metastasis on standard MDCT slices. Comparison of semi-automated and manual measurement of RECIST and WHO criteria
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Eur Radiol 18:2456-65. 2008
    ..94 (heterogeneous); WHO area: 0.95, 0.98, 0.93]. Semi-automatic measurement of hyperdense, hypodense and heterogeneous liver metastases showed reliable results on standard axial reconstructions in comparison to manual quantification...
  13. ncbi request reprint The accuracy of 1- and 3-mm slices in coronary calcium scoring using multi-slice CT in vitro and in vivo
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 17:321-9. 2007
    ....
  14. doi request reprint Introduction of a dedicated circulation phantom for comprehensive in vitro analysis of intravascular contrast material application
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Aachen, Germany
    Invest Radiol 43:729-36. 2008
    ..To develop a circulation phantom with physiologic circulation parameters, including a pulmonary and a body circulation for the evaluation of intravascular contrast material (CM) application...
  15. doi request reprint Computer-aided measurements of pulmonary emphysema in chest multidetector-row spiral computed tomography: effect of image reconstruction parameters
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    J Comput Assist Tomogr 32:899-904. 2008
    ..To evaluate the effect of different image reconstruction parameters on quantitative automated measurements of pulmonary emphysema in chest multidetector-row spiral computed tomography...
  16. doi request reprint Radiofrequency ablation of liver metastases-software-assisted evaluation of the ablation zone in MDCT: tumor-free follow-up versus local recurrent disease
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 33:297-306. 2010
    ..A new parameter (lnQ1//28/0(volume/RECIST/WHO/attenuation)) was introduced, which appears to be of prognostic value at early follow-up CT...
  17. doi request reprint Intra-individual comparison of different contrast media concentrations (300 mg, 370 mg and 400 mg iodine) in MDCT
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Eur Radiol 20:1644-50. 2010
    ..To compare intra-individual contrast enhancement in multi-detector-row computed tomography (MDCT) using contrast media (CM) containing 300, 370 and 400 mg iodine per ml (mgI/ml)...
  18. ncbi request reprint Dynamic multi-section CT imaging in acute myocardial infarction: preliminary animal experience
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, D 52074, Aachen, Germany
    Eur Radiol 16:746-52. 2006
    ..Results given in absolute values differed significantly between both imaging modalities (P<0.05). MDCT has the potential for visual and semiquantitative assessment of first-pass myocardial perfusion...
  19. ncbi request reprint Automated vs. manual assessment of left ventricular function in cardiac multidetector row computed tomography: comparison with magnetic resonance imaging
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 16:1416-23. 2006
    ..Calculation of LV volumes using either semiautomatic or manual contour tracing in cardiac MDCT is therefore feasible when compared to MRI. Automated contour detection needs to be improved to equal manual contour tracing...
  20. ncbi request reprint Influence of heart rate and temporal resolution on left-ventricular volumes in cardiac multislice spiral computed tomography: a phantom study
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Germany
    Invest Radiol 41:429-35. 2006
    ..We sought to investigate the influence of heart rate and temporal resolution on the assessment of left-ventricular (LV) function with multislice spiral computed tomography (CT)...
  21. ncbi request reprint Evaluation of aortocoronary bypass stents with cardiac MDCT compared with conventional catheter angiography
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    AJR Am J Roentgenol 188:361-9. 2007
    ..The objective of our study was to determine the accuracy of 16-MDCT for evaluation of stent patency and in-stent stenosis in venous coronary bypass grafts...
  22. doi request reprint Assessment of myocardial edema by computed tomography in myocardial infarction
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    JACC Cardiovasc Imaging 2:1167-74. 2009
    ..The aim of this study was to analyze whether cardiac computed tomography (CT) permits the assessment of myocardial edema in acute myocardial infarction (MI)...
  23. doi request reprint Unusual malignant coronary artery anomaly: results of coronary angiography, MR imaging, and multislice CT
    Jonas Apitzsch
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 33:389-93. 2010
    ..The diagnostic value of the different imaging modalities is discussed...
  24. doi request reprint Comparison of manual, semi- and fully automated heart segmentation for assessing global left ventricular function in multidetector computed tomography
    Cedric Plumhans
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 44:476-82. 2009
    ....
  25. doi request reprint Imaging of the coronary venous system: validation of three-dimensional rotational venous angiography against dual-source computed tomography
    Christian Knackstedt
    Department of Cardiology, Pulmonology and Vascular Medicine, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 31:1150-8. 2008
    ..On-site 3D visualization might improve decision making during cardiac interventions. In contrast to DSCT, rotational CSA does not demonstrate the anatomy of the mitral annulus or the course of the left circumflex artery...
  26. doi request reprint Automated measurement of lymph nodes: a phantom study
    Sebastian Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 19:1079-86. 2009
    ..81% to 9.20% (0.97-0.99) (RECIST) and from 8.16% to 22.66% (0.99-1.00) (volume). Regarding RECIST criteria and volume, automated evaluation of lymph nodes in a phantom demonstrated a high accuracy under varying MDCT parameters...
  27. ncbi request reprint Effect of varying slice thickness on coronary calcium scoring with multislice computed tomography in vitro and in vivo
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH, Aachen, Aachen, Germany
    Invest Radiol 40:695-9. 2005
    ..To compare coronary calcium scoring results (calcium volume, calcium mass, Agatston score, and number of lesions) of different slice thicknesses using a 16-slice CT (MSCT) scanner...
  28. ncbi request reprint Coronary artery calcium scoring with multislice computed tomography: in vitro assessment of a low tube voltage protocol
    Christoph K Thomas
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Invest Radiol 41:668-73. 2006
    ..We sought to compare an 80-kVp coronary calcium scoring protocol with the standard protocol of 120 kVp in terms of accuracy and reproducibility and to assess its dose reduction potential...
  29. ncbi request reprint Late-phase MSCT in the different stages of myocardial infarction: animal experiments
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 17:2310-7. 2007
    ..Myocardial late enhancement on MSCT correlates well with delayed enhancement MR imaging during the different stages of MI and allows for reliable assessment of reperfused MI during acute, subacute and chronic stages...
  30. ncbi request reprint Quantitative prediction of contrast enhancement from test bolus data in cardiac MSCT
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 17:1310-9. 2007
    ..Prediction of contrast enhancement in cardiac MSCT from test bolus data is feasible with a relatively small mean deviation; 80% of the predictions were within a range that might be acceptable for routine clinical application...
  31. ncbi request reprint Variability of aortic valve calcification measurement with multislice spiral computed tomography
    Karl M Ruhl
    Department of Diagnostic Radiology, RWTH Aachen University, Germany
    Invest Radiol 41:370-3. 2006
    ..We sought to assess the variability of aortic valve calcifications (AVCs) regarding the reconstruction window at different heart phases using multislice-spiral computed tomography...
  32. ncbi request reprint Global left ventricular function in cardiac CT. Evaluation of an automated 3D region-growing segmentation algorithm
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 16:1117-23. 2006
    ..2%. On the basis of a good contrast-enhanced data set, a left ventricular volume analysis using the new semi-automated region-growing segmentation algorithm is technically feasible, accurate and more time-effective...
  33. doi request reprint Jugular versus subclavian totally implantable access ports: catheter position, complications and intrainterventional pain perception
    Cedric Plumhans
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Eur J Radiol 79:338-42. 2011
    ..To determine the safest and most tolerable method for totally implantable access ports (TIAPs) particularly in regard to patient's pain perception and catheter-related complications...
  34. ncbi request reprint Accuracy of automated volumetry of pulmonary nodules across different multislice CT scanners
    Marco Das
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, 52072 Aachen, Germany
    Eur Radiol 17:1979-84. 2007
    ..Nodule volumetry is accurate with a reasonable volume error in data from different scanner vendors. This may have an important impact for intraindividual follow-up studies...
  35. ncbi request reprint MDCT detection of mitral valve calcification: prevalence and clinical relevance compared with echocardiography
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    AJR Am J Roentgenol 188:1264-9. 2007
    ..The purpose of this study was to analyze the prevalence and clinical significance of mitral valve calcification incidentally detected on chest CT scans in comparison with echocardiography...
  36. ncbi request reprint Coronary calcium scoring using 16-row multislice computed tomography: nonenhanced versus contrast-enhanced studies in vitro and in vivo
    Georg Mühlenbruch
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Germany
    Invest Radiol 40:148-54. 2005
    ..We sought to assess the agreement of coronary artery calcium score in nonenhanced and contrast-enhanced multislice-spiral computed tomography...
  37. ncbi request reprint Multislice computed tomography perfusion imaging for visualization of acute pulmonary embolism: animal experience
    Joachim Ernst Wildberger
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen, Germany
    Eur Radiol 15:1378-86. 2005
    ..Perfusion imaging allows a comprehensive assessment of morphology and function, providing more accurate information on acute PE...
  38. doi request reprint Contrast enhancement in chest multidetector computed tomography: intraindividual comparison of 300 mg/ml versus 400 mg/ml iodinated contrast medium
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Aachen, Germany
    Acad Radiol 16:144-9. 2009
    ..We sought to intraindividually compare intravascular contrast enhancement in multidector computed tomography (MDCT) of the chest using contrast media (CM) containing 300 and 400 mg iodine/ml...
  39. ncbi request reprint Molecular magnetic resonance imaging of pulmonary emboli with a fibrin-specific contrast agent
    Elmar Spuentrup
    Department of Diagnostic Radiology, University Hospital, Aachen Technical University, Pauwelsstrasse 30, 52057 Aachen, Germany
    Am J Respir Crit Care Med 172:494-500. 2005
    ....
  40. doi request reprint Carbon dioxide contrast agent for CT arteriography: results in a porcine model
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, Aachen, Germany
    J Vasc Interv Radiol 19:1055-64. 2008
    ..To test the feasibility of carbon dioxide (CO(2))-enhanced computed tomographic (CT)-arteriography in an animal model...
  41. doi request reprint Assessment of global right ventricular function on 64-MDCT compared with MRI
    Cedric Plumhans
    Department of Diagnostic Radiology, RWTH Aachen University Hospital, D 52057 Aachen, Germany
    AJR Am J Roentgenol 190:1358-61. 2008
    ..The aim of this study was to compare ECG-gated 64-MDCT with MRI for the assessment of global right ventricular (RV) function from coronary CT angiography data...
  42. pmc CT imaging of myocardial viability: experimental and clinical evidence
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Germany
    Cardiovasc J Afr 18:169-74. 2007
    ..Clinical relevance of the different MSCT techniques is described...
  43. ncbi request reprint Small pulmonary nodules: effect of two computer-aided detection systems on radiologist performance
    Marco Das
    Department of Diagnostic Radiology, Institute of Medical Statistics, and Department of Occupational Health, Rheinisch Westfälische Technische Hochschule Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Radiology 241:564-71. 2006
    ..To prospectively compare the effects of two computer-aided detection (CAD) systems on the detection of small pulmonary nodules at multi-detector row computed tomography (CT) by using a consensus panel decision as the reference standard...
  44. doi request reprint Left ventricular function can reliably be assessed from dual-source CT using ECG-gated tube current modulation
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Invest Radiol 44:384-9. 2009
    ..The aim of this study was to assess the reliability of global left ventricular (LV) function analysis using dual source CT (DSCT) with and without ECG-gated tube current modulation in comparison with magnetic resonance (MR) imaging...
  45. ncbi request reprint Acute myocardial infarction: assessment of left ventricular function with 16-detector row spiral CT versus MR imaging--study in pigs
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Radiology 236:112-7. 2005
    ..To assess global left ventricular (LV) function and regional wall motion with retrospective electrocardiographically gated 16-detector row computed tomography (CT) in comparison with magnetic resonance (MR) imaging...
  46. ncbi request reprint Value of virtual tracheobronchoscopy and bronchography from 16-slice multidetector-row spiral computed tomography for assessment of suspected tracheobronchial stenosis in children
    Dagmar Honnef
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 16:1684-91. 2006
    ..To evaluate the value of dose-reduced 16-slice multidetector-row spiral computed tomography (16-MDCT) using virtual tracheobronchoscopy (VTB) and virtual bronchography (VBG) in children with suspected tracheobronchial stenosis...
  47. doi request reprint Identification of the iodine concentration that yields the highest intravascular enhancement in MDCT angiography
    Florian F Behrendt
    Department of Radiology, RWTH Aachen University, North Rhine Westphalia, Germany
    AJR Am J Roentgenol 200:1151-6. 2013
    ..The objective of our study was to identify the iodine concentration that yields the highest intravascular contrast enhancement in MDCT angiography by intraindividual comparison in an animal model...
  48. ncbi request reprint Sixteen-slice spiral CT versus MR imaging for the assessment of left ventricular function in acute myocardial infarction
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 15:714-20. 2005
    ..791. Sixteen-slice spiral CT allows for reliable assessment of LV volumes, but is not yet suited for the evaluation of all functional parameters. Assessment of regional wall motion at rest is feasible...
  49. doi request reprint Dual-source CT assessment of ventricular function in healthy and infarcted myocardium: an animal study
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Eur J Radiol 77:443-9. 2011
    ..To assess global and regional ventricular function in the presence of myocardial infarction (MI) using cardiac dual-source computed tomography (DSCT) in comparison to magnetic resonance (MR) imaging...
  50. ncbi request reprint Approaches to CT perfusion imaging in pulmonary embolism
    Joachim E Wildberger
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Semin Roentgenol 40:64-73. 2005
    ..Initial animal data from 16-slice MSCT offer a real CT-subtraction technique of the entire chest for the first time...
  51. doi request reprint Intraindividual comparison of contrast media concentrations for combined abdominal and thoracic MDCT
    Florian F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    AJR Am J Roentgenol 191:145-50. 2008
    ..The purpose of this study was an intraindividual comparison of the degrees of MDCT contrast enhancement achieved with agents containing 300 and 370 mg I/mL...
  52. doi request reprint Volumetric arterial enhancement fraction predicts tumor recurrence after hepatic radiofrequency ablation of liver metastases: initial results
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Germany
    AJR Am J Roentgenol 196:W573-9. 2011
    ..The objective of our study was to investigate the diagnostic value of the volumetric arterial enhancement fraction of the liver with color mapping for the early detection of tumor relapse after hepatic radiofrequency ablation (RFA)...
  53. ncbi request reprint Imaging of the cardiac venous system: comparison of MDCT and conventional angiography
    Georg Mühlenbruch
    Department of Diagnostic Radiology, RWTH Aachen University Hospital, Pauwelsstrasse 30, Aachen 52057, Germany
    AJR Am J Roentgenol 185:1252-7. 2005
    ..The purpose of this study was to compare MDCT angiography with conventional coronary sinus angiography in terms of detailed anatomic display of the coronary veins...
  54. doi request reprint Multidetector computed tomography (MDCT) evaluation of myocardial viability: intraindividual comparison of monomeric vs. dimeric contrast media in a rabbit model
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Eur Radiol 19:290-7. 2009
    ..9928-0.9982. Iopromide and iodixanol both allow a reliable assessment of MI with delayed contrast-enhanced MDCT...
  55. doi request reprint The culprit lesion and its consequences: combined visualization of the coronary arteries and delayed myocardial enhancement in dual-source CT: a pilot study
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 20:2834-43. 2010
    ..To assess combined analysis of coronary arteries and delayed myocardial contrast enhancement based on co-registration of coronary CT angiography and late-phase CT and automatic segmentation...
  56. doi request reprint Quantitative whole heart stress perfusion CT imaging as noninvasive assessment of hemodynamics in coronary artery stenosis: preliminary animal experience
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Invest Radiol 45:298-305. 2010
    ..To quantify differences in regional myocardial perfusion in coronary artery stenosis by the use of dual source computed tomography (DSCT) in an animal model...
  57. ncbi request reprint Cardiac CT: coronary arteries and beyond
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 17:994-1008. 2007
    ..In combination with experimental approaches for assessing aortic valve function and myocardial perfusion imaging, cardiac MDCT offers the potential for a comprehensive examination of the heart using a single breath-hold examination...
  58. ncbi request reprint Determination of cardiac output with multislice spiral computed tomography: a validation study
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Germany
    Invest Radiol 39:451-4. 2004
    ....
  59. doi request reprint Prospective evaluation of image quality with use of a patient image gallery for dose reduction in pediatric 16-MDCT
    Dagmar Honnef
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, D 52074 Aachen, Germany
    AJR Am J Roentgenol 190:467-73. 2008
    ....
  60. ncbi request reprint Flat-panel detector computed tomography for the assessment of coronary artery stents: phantom study in comparison with 16-slice spiral computed tomography
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Aachen, Germany
    Invest Radiol 40:8-13. 2005
    ..Thus, we evaluated the use of FPCT in comparison to MSCT for the assessment of coronary artery stents...
  61. ncbi request reprint Flat panel computed tomography for non-invasive flow measurement: initial results in in-vitro studies
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Eur Radiol 18:747-52. 2008
    ..9726). FPCT allows for computing flow. While preliminary results indicate a good agreement at low flow rates, further studies are needed to assess this technique for higher flow rates...
  62. ncbi request reprint Value of conventional chest radiography for the detection of coronary calcifications: comparison with MSCT
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Eur J Radiol 69:510-6. 2009
    ..To evaluate if computed tomography (CT) coronary calcium scoring is needed after detection of coronary calcifications on conventional chest radiographs...
  63. ncbi request reprint A newly developed perfused umbrella electrode for radiofrequency ablation: an ex vivo evaluation study in bovine liver
    Philipp Bruners
    Helmholtz Institute for Biomedical Engineering, Applied Medical Engineering, RWTH Aachen, Pauwelsstrasse 20, D 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 30:992-8. 2007
    ..We conclude that saline preinjection in combination with increasing the active tip length of the umbrella-shaped LeVeen RF probe allows the reliable ablation of larger volumes in comparison to the originally configured electrode...
  64. doi request reprint Functional imaging in the assessment of myocardial infarction: MR imaging vs. MDCT vs. SPECT
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Germany
    Eur J Radiol 71:480-5. 2009
    ....
  65. ncbi request reprint Magnetic resonance-guided placement of aortic stents grafts: feasibility with real-time magnetic resonance fluoroscopy
    Andreas H Mahnken
    Diagnostic Radiology Clinic, Aachen University of Technology, Pauwelsstrasse 30, D 52074 Aachen, Germany
    J Vasc Interv Radiol 15:189-95. 2004
    ..The artifact behavior of different aortic stent-grafts was evaluated with real-time magnetic resonance (MR) imaging, and the feasibility of real-time MR-guided stent-graft placement in the abdominal aorta was tested...
  66. ncbi request reprint MR-guided radiofrequency ablation of hepatic malignancies at 1.5 T: initial results
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Aachen, Germany
    J Magn Reson Imaging 19:342-8. 2004
    ..To assess the feasibility of magnetic resonance (MR)-guided radiofrequency ablation (RFA) of hepatic malignancies using a high-field MR scanner...
  67. ncbi request reprint Spatial domain image filtering in computed tomography: feasibility study in pulmonary embolism
    Joachim E Wildberger
    Department of Diagnostic Radiology, University Hospital, University of Technology RWTH, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 13:717-23. 2003
    ..Despite different data processing methods, thin effective slice thicknesses and overlapping reconstruction increments are mandatory for detailed CT analysis of pulmonary embolism on the segmental and subsegmental level...
  68. doi request reprint A trucut biopsy needle for bipolar radiofrequency ablation of needle tract: a proof-of-concept experiment
    Philipp Bruners
    Applied Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
    Eur Radiol 20:2000-4. 2010
    ..To develop a trucut biopsy needle featuring two electrodes that allow for bipolar radiofrequency (RF) coagulation of the puncture tract...
  69. doi request reprint Multi-slice computed tomography: A tool for non-invasive temperature measurement?
    Philipp Bruners
    Department of Applied Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, D 52074 Aachen, Germany
    Int J Hyperthermia 26:359-65. 2010
    ..To investigate the potential of multi-slice computed tomography (MSCT) as a tool for non-invasive temperature measurement...
  70. ncbi request reprint Fast interactive real-time magnetic resonance imaging of cardiac masses using spiral gradient echo and radial steady-state free precession sequences
    Elmar Spuentrup
    Department of Diagnostic Radiology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
    Invest Radiol 38:288-92. 2003
    ..However, this technique may be limited in patients with dyspnoe or arrhythmia. The aim of this study was the evaluation of an interactive MR-approach for the detection and localization of cardiac masses...
  71. doi request reprint Spectral rhoZ-projection method for characterization of body fluids in computed tomography: ex vivo experiments
    Andreas H Mahnken
    Department of Diagnostic Radiology and Applied Medical Engineering, Helmholtz Institute, RWTH Aachen University, Pauwelsstrasse 30, D 52074, Aachen, Germany
    Acad Radiol 16:763-9. 2009
    ..The aim of this study was to assess physical and chemical properties of different body fluids in an ex vivo setting...
  72. doi request reprint Computed tomography imaging in myocardial infarction
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Expert Rev Cardiovasc Ther 9:211-21. 2011
    ..The current status of MDCT in the diagnostic work-up of myocardial infarction is reviewed...
  73. doi request reprint Telemetric catheter-based pressure sensor for hemodynamic monitoring: experimental experience
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University Hospital, Aachen, Germany
    Cardiovasc Intervent Radiol 32:714-9. 2009
    ..Both devices may be applicable for hemodynamic monitoring. Further long-term studies for assessing reliability and durability of the device are warranted...
  74. doi request reprint Local ablative therapies in HCC: percutaneous ethanol injection and radiofrequency ablation
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Dig Dis 27:148-56. 2009
    ..In this article, we provide an insight into the technical basics of PEI and RFA and review the clinical results and indications of these interventional techniques in the treatment of HCC...
  75. pmc Interventional management of a renal cell carcinoma by radiofrequency ablation with tagging and cooling
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University Hospital, Aachen, Germany
    Korean J Radiol 10:523-6. 2009
    ..The potential pitfalls of complex hybrid interventions for treating RCC are discussed...
  76. doi request reprint Robot arm based flat panel CT-guided electromagnetic tracked spine interventions: phantom and animal model experiments
    Tobias Penzkofer
    Applied Medical Engineering, Helmholtz Institute Aachen, RWTH Aachen University, Pauwelsstr 20, 52074 Aachen, Germany
    Eur Radiol 20:2656-62. 2010
    ..To evaluate accuracy and procedure times of electromagnetic tracking (EMT) in a robotic arm mounted flat panel setting using phantom and animal cadaveric models...
  77. ncbi request reprint Hemolysis, hemorrhage, headache, and hidden abortion: imaging findings in antiphospholipid syndrome
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, University of Technology, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 13:L83-6. 2003
    ..The syndrome should be suspected in patients with thromboses and organ infarctions of otherwise undetermined etiology...
  78. ncbi request reprint Variation of the coronary calcium score depending on image reconstruction interval and scoring algorithm
    Andreas H Mahnken
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Invest Radiol 37:496-502. 2002
    ..To evaluate the reconstruction interval dependent bandwidth of the coronary calcium score, considering different methods of image reconstruction and quantification of coronary calcifications...
  79. ncbi request reprint Detection of pulmonary embolism using 16-slice multidetector-row computed tomography: evaluation of different image reconstruction parameters
    Martin Heuschmid
    Department of Diagnostic Radiology, Eberhard Karls University Hospital Tuebingen, Tuebingen, Germany
    J Comput Assist Tomogr 30:77-82. 2006
    ....
  80. ncbi request reprint Radiofrequency ablation of osteoid osteoma: initial results with a bipolar ablation device
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    J Vasc Interv Radiol 17:1465-70. 2006
    ..To report the initial results with percutaneous radiofrequency (RF) ablation of osteoid osteomas with a bipolar ablation device...
  81. ncbi request reprint Asbestos Surveillance Program Aachen (ASPA): initial results from baseline screening for lung cancer in asbestos-exposed high-risk individuals using low-dose multidetector-row CT
    Marco Das
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 17:1193-9. 2007
    ..28% (8/187) at baseline screening with an additional large number of indeterminate pulmonary nodules. Low-dose MDCT proved to be feasible in this highly selected population...
  82. ncbi request reprint Detecting endoleaks after endovascular AAA repair with a minimally invasive, implantable, telemetric pressure sensor: an in vitro study
    Fabian Springer
    Helmholtz Institute for Biomedical Engineering, Applied Medical Engineering, RWTH Aachen University, Pauwelsstrasse 20, 52074, Aachen, Germany
    Eur Radiol 17:2589-97. 2007
    ..96) aneurysm sac. In an in vitro silicone model, the newly designed telemetric pressure sensor was able to detect the occurrence of an endoleak in a non-invasive way and might be a valuable device for follow-up of endovascular AAA repair...
  83. ncbi request reprint Percutaneous transgastric snaring for repositioning of a dislocated internal drain from a pancreatic pseudocyst
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 31:S217-20. 2008
    ..The combination of CT-guided percutaneous puncture and fluoroscopic snaring permitted minimally invasive management of this rare complication...
  84. ncbi request reprint Radiation dose reduction to the male gonads during MDCT: the effectiveness of a lead shield
    Christian Hohl
    Department of Diagnositc Radiology, University of Technology of Aachen, Paulwelsstrasse 30, Aachen D 52057, Germany
    AJR Am J Roentgenol 184:128-30. 2005
    ..Our study was designed to quantify the effect of a standard gonad shield on the testicular radiation exposure due to scatter during routine abdominopelvic MDCT...
  85. doi request reprint Electromagnetic tracking for CT-guided spine interventions: phantom, ex-vivo and in-vivo results
    Philipp Bruners
    Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen, Germany
    Eur Radiol 19:990-4. 2009
    ..Immobilization of the patient and optimal positioning of the field generator are essential to achieve a high accuracy of needle placement in a clinical CT setting...
  86. ncbi request reprint Minimally invasive close-chest method for creating reperfused or occlusive myocardial infarction in swine
    Gabriele A Krombach
    Department of Diagnostic Radiology, University Hospital of the University of Technology, Aachen, Germany
    Invest Radiol 40:14-8. 2005
    ..We sought to evaluate a closed-chest model for reperfused and occlusive myocardial infarction (MI) in pigs and to report experiences and pitfalls...
  87. doi request reprint Magnetic thermal ablation using ferrofluids: influence of administration mode on biological effect in different porcine tissues
    Philipp Bruners
    Applied Medical Engineering, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse 20, 52074 Aachen, Germany
    Cardiovasc Intervent Radiol 31:1193-9. 2008
    ..Continuous infusion of ferrofluids results in larger zones of necrosis compared to a single injection technique...
  88. ncbi request reprint Radiofrequency ablation of renal tumors
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, Aachen University of Technology, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 14:1449-55. 2004
    ..Due to its technical benefits, RFA seems to be advantageous when compared to cryoablation or laser ablation. However, there are no long-term follow-up or comparative data proving an equal effectiveness to surgery...
  89. doi request reprint Which Iodine concentration in chest CT?--a prospective study in 300 patients
    Georg Mühlenbruch
    Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Aachen, Germany
    Eur Radiol 18:2826-32. 2008
    ..00019). Given identical iodine delivery rates of 1.3 g/s and iodine loads of 33 g, contrast media with concentrations of 300, 370 and 400 mg iodine/ml do not result in different intravascular enhancement in chest-CT...
  90. ncbi request reprint Measurement of cardiac output from a test-bolus injection in multislice computed tomography
    Andreas H Mahnken
    Department of Radiology, University Hospital, Aachen University of Technology, Pauwelsstrasse 52, 52074, Aachen, Germany
    Eur Radiol 13:2498-504. 2003
    ..0 ml for SV (12.3%). Non-invasive quantification of CO seems to be feasible from a standard test-bolus injection. It provides valuable information on cardiac function without additional radiation or application of contrast material...
  91. ncbi request reprint A feasibility study of contrast enhancement of acute myocardial infarction in multislice computed tomography: comparison with magnetic resonance imaging and gross morphology in pigs
    Arno Buecker
    Clinic of Diagnostic Radiology, University Hospital Aachen, Germany
    Invest Radiol 40:700-4. 2005
    ..The results were correlated with MRI and postmortem tissue staining...
  92. ncbi request reprint Coronary artery stents in multislice computed tomography: in vitro artifact evaluation
    Andreas H Mahnken
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Invest Radiol 39:27-33. 2004
    ..The aim of this study was to systematically compare the ability to assess the coronary artery lumen in the presence of coronary artery stents in multislice spiral CT (MSCT)...
  93. ncbi request reprint Multislice spiral computed tomography to determine the effects of a recruitment maneuver in experimental lung injury
    Dietrich Henzler
    Anesthesiology Department, University Hospital, RWTH Aachen, Pauwelsstr 30, 52074 Aachen, Germany
    Eur Radiol 16:1351-9. 2006
    ..Quantitative analysis of lung volumes by whole lung MSCT revealed the increase of poorly aerated lung as the main mechanism of a standard recruitment maneuver. MSCT can provide additional information as compared to single slice CT...
  94. ncbi request reprint Low tube voltage improves computed tomography imaging of delayed myocardial contrast enhancement in an experimental acute myocardial infarction model
    Andreas H Mahnken
    Helmholtz Institute, Applied Medical Engineering and Department of Diagnostic Radiology, RWTH Aachen University, Aachen, Germany
    Invest Radiol 42:123-9. 2007
    ..We sought to evaluate the influence of tube voltage on the visualization of acute myocardial infarction (MI) in cardiac multislice spiral computed tomography (MSCT)...
  95. ncbi request reprint Low-dose multislice spiral computed tomography in acute lung injury: animal experience
    Joachim E Wildberger
    Department of Diagnostic Radiology, University Hospital, University of Technology RWTH, Aachen, Germany
    Invest Radiol 38:9-16. 2003
    ..To compare low-dose multislice spiral CT (MSCT) with a standard protocol for the evaluation of acute lung injury (ALI) in an animal model...
  96. ncbi request reprint Is there a need for contrast-enhanced T1-weighted MRI of the spine after inconspicuous short tau inversion recovery imaging?
    Andreas H Mahnken
    Department of Diagnostic Radiology, University Hospital, Aachen University of Technology, Germany
    Eur Radiol 15:1387-92. 2005
    ..Normal STIR images allow contrast-enhanced T1-weighted images for detection of bone marrow abnormalities to be omitted, whereas further imaging is needed in case of abnormal STIR images...
  97. ncbi request reprint Evaluation of the influence of acquisition and reconstruction parameters for 16-row multidetector CT on coronary calcium scoring using a stationary and dynamic cardiac phantom
    Philipp G C Begemann
    Center of Diagnostic Imaging and Intervention, Department of Diagnostic and Interventional Radiology, University Medical Center Hamburg Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
    Eur Radiol 17:1985-94. 2007
    ..The choice of the correct cardiac phase within the RR interval is essential to minimize measurement errors...
  98. ncbi request reprint CT imaging in acute pulmonary embolism: diagnostic strategies
    Joachim E Wildberger
    Department of Diagnostic Radiology, University Hospital, University of Technology RWTH, Aachen, Germany
    Eur Radiol 15:919-29. 2005
    ..Using advanced multislice spiral CT technology, some practitioners have advocated CTA as the sole imaging tool for routine clinical assessment in suspected acute PE. This will simplify standards of practice in the near future...
  99. ncbi request reprint A new algorithm for metal artifact reduction in computed tomography: in vitro and in vivo evaluation after total hip replacement
    Andreas H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Germany
    Invest Radiol 38:769-75. 2003
    ..To evaluate a newly developed algorithm for metal artifact reduction (MAR) in Computed Tomography (CT)...
  100. ncbi request reprint Quantitative assessment of left ventricular function with interactive real-time spiral and radial MR imaging
    Elmar Spuentrup
    Department of Diagnostic Radiology, University Hospital, Technical University of Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Radiology 227:870-6. 2003
    ..Interactive real-time radial steady-state free precession imaging allows accurate quantitative assessment of left ventricular volumes...
  101. ncbi request reprint Multidetector-row computed tomography vs. angiography and intravascular ultrasound for the evaluation of the diameter of proximal coronary arteries
    Anil Martin Sinha
    Department of Cardiology, University Hospital, RWTH Aachen, Germany
    Int J Cardiol 110:40-5. 2006
    ..We determined the accuracy of computed tomography for measurement of coronary artery lumen diameters in comparison to quantitative coronary angiography and intravascular ultrasound (IVUS)...