A H Mahnken

Summary

Affiliation: RWTH Aachen
Country: Germany

Publications

  1. ncbi 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
  2. pmc Case study of hepatic radiofrequency ablation causing a systemic inflammatory response under total intravenous anesthesia
    Gereon Schälte
    Department of Anesthesiology, University Hospital, RWTH Aachen, Aachen, Germany
    Korean J Radiol 11:640-7. 2010
  3. doi Efficacy of lower-body shielding in computed tomography fluoroscopy-guided interventions
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, RWTH Aachen, 52074, Aachen, Germany
    Cardiovasc Intervent Radiol 35:1475-9. 2012
  4. ncbi Aortic valve calcifications on chest films: how much calcium do I need?
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, University Hospital, RWTH Aachen University School of Medicine, Aachen, Germany
    Acta Cardiol 66:505-8. 2011
  5. ncbi 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
  6. ncbi 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
  7. ncbi 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
  8. ncbi 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
  9. ncbi 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
  10. ncbi 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

Collaborators

Detail Information

Publications134 found, 100 shown here

  1. ncbi 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...
  2. pmc Case study of hepatic radiofrequency ablation causing a systemic inflammatory response under total intravenous anesthesia
    Gereon Schälte
    Department of Anesthesiology, University Hospital, RWTH Aachen, Aachen, Germany
    Korean J Radiol 11:640-7. 2010
    ..To investigate the effects of hepatic radiofrequency ablation (RFA) in patients with malignant liver disease with respect to inflammation activation and stress response...
  3. doi Efficacy of lower-body shielding in computed tomography fluoroscopy-guided interventions
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, RWTH Aachen, 52074, Aachen, Germany
    Cardiovasc Intervent Radiol 35:1475-9. 2012
    ..The goal of this study was to analyze the efficacy of lower-body shielding as a simple structural method for decreasing radiation dose to the interventionalist without limiting access to the patient...
  4. ncbi Aortic valve calcifications on chest films: how much calcium do I need?
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, University Hospital, RWTH Aachen University School of Medicine, Aachen, Germany
    Acta Cardiol 66:505-8. 2011
    ..The absence of AVC on chest films does not exclude high grade AVS. The aim of this study was to analyse if there is a threshold for the detection of AVC from conventional chest films in patients suffering from high grade AVS...
  5. ncbi 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...
  6. ncbi 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...
  7. ncbi 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)...
  8. ncbi 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...
  9. ncbi 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...
  10. ncbi 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)...
  11. ncbi [Contrast-enhanced MR and MSCT for the assessment of myocardial viability]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum RWTH Aachen, Aachen
    Rofo 178:771-80. 2006
    ..Myocardial perfusion imaging as well as the use of alternative contrast agents are introduced. Pathophysiology is correlated to the changes observed in MR imaging and MSCT. The clinical impact of the imaging findings is described...
  12. ncbi 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)...
  13. ncbi 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...
  14. ncbi 64-slice computed tomography assessment of coronary artery stents: a phantom study
    A H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Germany
    Acta Radiol 47:36-42. 2006
    ..To compare the use of a new 64-slice computed tomography (CT) scanner with 16-slice CT in the visualization of coronary artery stent lumen...
  15. ncbi 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...
  16. ncbi 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...
  17. ncbi 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...
  18. ncbi [Criminal implication of sponsoring in medicine: legal ramifactions and recommendations]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitatsklinikum Aachen
    Rofo 177:1070-6. 2005
    ..The currently available recommendations on this issue are introduced...
  19. ncbi 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...
  20. ncbi Percutaneous radiofrequency ablation of renal cell carcinoma: preliminary results
    A H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Germany
    Acta Radiol 46:208-14. 2005
    ..To report early results in percutaneous radiofrequency ablation (RFA) of renal cell carcinoma with an expandable RF probe...
  21. ncbi 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...
  22. doi Perfusion weighted color maps for enhanced visualization of myocardial infarction by MSCT: preliminary experience
    Andreas Horst Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    Int J Cardiovasc Imaging 24:883-90. 2008
    ....
  23. doi 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...
  24. doi 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)...
  25. doi 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...
  26. doi Blended learning in radiology: is self-determined learning really more effective?
    Andreas H Mahnken
    Department of Diagnostic and Interventional Radiology, RWTH Aachen University, Aachen, Germany
    Eur J Radiol 78:384-7. 2011
    ..To investigate whether there are differences in learning outcomes after the application of self-determined (intrinsic motivation) or mandatory (extrinsic motivation) use of e-learning units in an undergraduate radiology internship...
  27. doi 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...
  28. ncbi Carbon dioxide-enhanced CT-guided placement of aortic stent-grafts: feasibility in an animal model
    Andreas Horst Mahnken
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Aachen, Germany
    J Endovasc Ther 17:332-9. 2010
    ..To test the feasibility of carbon dioxide (CO(2))-enhanced computed tomography (CT)-guided placement of infrarenal abdominal aortic stent-grafts in an animal model...
  29. doi Radiofrequency ablation of osteoid osteoma: initial experience with a new monopolar ablation device
    Andreas H Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Cardiovasc Intervent Radiol 34:579-84. 2011
    ..Monopolar RFA using the Soloist probe is effective and safe for the treatment of osteoid osteoma. It results in comparable success rates as other monopolar or bipolar RF systems in the treatment of osteoid osteoma...
  30. doi 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...
  31. pmc Multislice computed tomography for comprehensive assessment of the heart in acute chest pain: a case report
    Andreas Horst Mahnken
    Department of Diagnostic Radiology, RWTH Aachen University, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Cases J 2:178. 2009
    ..Over the last decade cardiac computed tomography emerged as a non-invasive imaging modality for the assessment of the heart and the coronary arteries. Only recently its use for patient management in the emergency department was suggested...
  32. 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...
  33. ncbi 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...
  34. doi 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...
  35. doi 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...
  36. doi [CT-guided radiofrequency ablation of liver metastases from colorectal cancer]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitatsklinikum Aachen
    Dtsch Med Wochenschr 134:976-80. 2009
    ..Data on radiofrequency ablation (RFA) of liver metastasis has not been uniform. The goal of this study was to determine medium-term success of CT-guided RFA of liver metastases from colorectal cancer...
  37. ncbi 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...
  38. doi 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...
  39. doi 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
    ....
  40. ncbi 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...
  41. ncbi Quantitative and qualitative assessment of left ventricular volume with ECG-gated multislice spiral CT: value of different image reconstruction algorithms in comparison to MRI
    A H Mahnken
    Department of Diagnostic Radiology, Aachen University of Technology, Aachen, Germany
    Acta Radiol 44:604-11. 2003
    ..To assess the value of different image reconstruction algorithms for assessment of the left ventricular function using retrospectively ECG-gated multislice spiral computed tomography (MSCT) of the heart...
  42. ncbi [The basics of left ventricular functional analysis with MRI and MSCT]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitatsklinikum Aachen
    Rofo 176:1365-79. 2004
    ..Aim of this article is to review theoretical and technical aspects, opportunities and limitations of MRI and MSCT for functional imaging of the heart...
  43. ncbi 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
    ....
  44. ncbi 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...
  45. ncbi [The influence of motion artifacts conditioned by reconstruction, on the coronary calcium score in multislice spiral CT]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen, Germany
    Rofo 173:888-92. 2001
    ..The influence of motion artifacts conditioned by reconstruction, on the coronary calcium score in multislice spiral CT...
  46. ncbi [Imaging of the abdominal wall: combination of tissue-harmonic-imaging and extended field-of-view sonography]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 176:1837-42. 2004
    ..To evaluate the combined use of extended field-of-view sonography and tissue harmonic imaging (THI) for assessment of the abdominal wall...
  47. ncbi 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...
  48. ncbi [Quantification of cardiac function with multislice spiral CT using retrospective EKG-gating: comparison with MRI]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen, Germany
    Rofo 175:83-8. 2003
    ..To quantify left ventricular function derived from retrospectively ECG-gated multislice spiral CT (MSCT) data sets in comparison to MRI...
  49. ncbi Aneurysmal bone cyst: value of MR imaging and conventional radiography
    A H Mahnken
    Department of Diagnostic Radiology, University of Technology, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 13:1118-24. 2003
    ..Magnetic resonance imaging provides improved diagnostic specificity and valuable information on soft tissue changes...
  50. ncbi 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...
  51. ncbi 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...
  52. ncbi Value of 3D-volume rendering in the assessment of coronary arteries with retrospectively ECG-gated multislice spiral CT
    A H Mahnken
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Acta Radiol 44:302-9. 2003
    ..To assess the diagnostic value and measurement precision of 3D volume rendering technique (3D-VRT) from retrospectively ECG-gated multislice spiral CT (MSCT) data sets for imaging of the coronary arteries...
  53. ncbi 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...
  54. ncbi 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)...
  55. ncbi 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...
  56. ncbi 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)...
  57. ncbi [Value of cardiac multislice spiral CT for the assessment of degenerative aortic stenosis: comparison with echocardiography]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 176:1582-8. 2004
    ..To non-invasively assess the severity of aortic valve stenosis (AS) by the determination of aortic valve calcification (AVC) using multislice spiral computed tomography (MSCT)...
  58. ncbi Cross-sectional imaging of primary osseous hemangiopericytoma
    A H Mahnken
    Department of Radiology, University Hospital, University of Technology Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 12:85-9. 2002
    ..Curvilinear signal abnormalities support the diagnosis of hemangiopericytoma of bone. This imaging pattern is best visualized on fat-suppressed or contrast enhanced T1-weighted MR images...
  59. ncbi 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...
  60. ncbi Unilateral absence of the left pulmonary artery associated with coronary-to-bronchial artery anastomosis
    A H Mahnken
    Department of Diagnostic Radiology, University Hospital, University of Technology Aachen, Germany
    J Thorac Imaging 15:187-90. 2000
    ..The presenting symptoms and pertinent diagnostic imaging are described, including conventional radiographs, angiography, computed tomography, and magnetic resonance imaging, and the therapeutic options available are discussed...
  61. ncbi [Changes in the region and the proximal aneurysm neck after endovascular repair of infrarenal aortic aneurysms]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 172:842-6. 2000
    ..To analyze short and mid-term changes of the proximal aneurysm neck and to evaluate renal function after endovascular repair of infrarenal abdominal aortic aneurysms...
  62. ncbi [Papillary renal cell carcinoma: comparison of CT and gross morphology]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 172:1011-5. 2000
    ..To analyze the CT appearance of papillary renal cell tumor (pRCT) under consideration of gross pathology...
  63. ncbi [MRI of osteomyelitis: sensitivity and specificity of STIR sequences in comparison with contrast-enhaned T1 spin echo sequences]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 172:1016-9. 2000
    ..To evaluate the need for additional MR sequences including administration of Gd-DTPA after inconspicuous Short-Tau Inversion-Recovery (STIR) sequence to exclude the diagnosis of osteomyelitis...
  64. ncbi [Automated image analysis of lateral roentgen images of the spine using anatomic models]
    A H Mahnken
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen
    Rofo 173:554-7. 2001
    ..Development of a software for fully automated image analysis of lateral lumbar spine X-rays...
  65. ncbi Cross-sectional imaging patterns of desmoplastic fibroma
    A H Mahnken
    Department of Diagnostic Radiology, University Hospital, University of Technology, Aachen, Germany
    Eur Radiol 11:1105-10. 2001
    ..Cross-sectional imaging of DF is useful for local staging of the tumor because it provides valuable information about the extent of bone destruction as well as medullary and extraosseous spread...
  66. ncbi Detection of coronary calcifications: feasibility of dose reduction with a body weight-adapted examination protocol
    A H Mahnken
    Department of Diagnostic Radiology, University of Technology, Aachen, University Hospital, Pauwelsstr 30, D 52074 Aachen, Germany
    AJR Am J Roentgenol 181:533-8. 2003
    ..In all image series, image noise was assessed by a region-of-interest methodology. Image noise was analyzed using a regression analysis...
  67. doi A new approach to interventional atrioventricular valve therapy
    Andreas Goetzenich
    Clinic for Cardiothoracic and Vascular Surgery, University Hospital RWTH Aachen, Aachen, Germany
    J Thorac Cardiovasc Surg 140:97-102. 2010
    ..We aimed for a new approach to anchor a biologic heart valve in the mitral position by inserting a valve-carrying hollow body into the left atrium. This approach was investigated in both a simulation and an animal model...
  68. doi 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...
  69. ncbi 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...
  70. ncbi 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...
  71. ncbi In vitro evaluation of optionally retrievable and permanent IVC filters
    Andreas H Mahnken
    Applied Medical Engineering, Helmholtz Institute, Department of Diagnostic Radiology, RWTH Aachen University, Germany
    Invest Radiol 42:529-35. 2007
    ..To systematically evaluate different optionally retrievable and permanent inferior vena cava (IVC)-filters with respect to their capture rates...
  72. ncbi 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)...
  73. ncbi 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...
  74. ncbi 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...
  75. ncbi 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...
  76. ncbi Assessment of myocardial viability in reperfused acute myocardial infarction using 16-slice computed tomography in comparison to magnetic resonance imaging
    Andreas H Mahnken
    Diagnostic Radiology, University Hospital, Pauwelsstrasse 30 D 52074 Aachen, Germany
    J Am Coll Cardiol 45:2042-7. 2005
    ..The aim of this study was to examine if contrast-enhanced multislice spiral computed tomography (MSCT) is comparable to contrast-enhanced magnetic resonance imaging (MRI) for depiction of acute myocardial infarction (MI)...
  77. ncbi 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)...
  78. ncbi 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...
  79. doi 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...
  80. doi [Computer-aided detection of small pulmonary nodules in multidetector spiral computed tomography (MSCT) in children]
    D Honnef
    Radiologische Diagnostik, Universitätsklinikum RWTH Aachen, Aachen
    Rofo 180:540-6. 2008
    ..Retrospective evaluation of computer-aided detection software (CAD) for automated detection (LungCAD, Siemens Medical solutions, Forchheim, Germany) and volumetry (LungCARE) of pulmonary nodules in dose-reduced pediatric MDCT...
  81. ncbi Individually weight-adapted examination protocol in retrospectively ECG-gated MSCT of the heart
    B Jung
    Department of Diagnostic Radiology, University of Technology, Aachen University Hospital, Pauwelsstrasse 30, 52074 Aachen, Germany
    Eur Radiol 13:2560-6. 2003
    ..Individually weight-adapted tube current-time settings allow for a substantial dose reduction when performing retrospectively ECG-gated MSCT angiography for coronary arteries without impairment of diagnostic image quality...
  82. ncbi [In vitro experiments on fluid-modulated microwave ablation]
    P Isfort
    Lehrstuhl für angewandte Medizintechnik, Helmholtz Institut für Biomedizinische Technik, RWTH Aachen
    Rofo 182:518-24. 2010
    ..Evaluation of the enhancing or protecting effects of different fluids during microwave ablation (MWA)...
  83. doi Performance evaluation of a computer-aided detection algorithm for solid pulmonary nodules in low-dose and standard-dose MDCT chest examinations and its influence on radiologists
    M Das
    Department of Diagnostic Radiology, RWTH Aachen University Hospital, Aachen, Germany
    Br J Radiol 81:841-7. 2008
    ..0001). In conclusion, CAD is beneficial in both low-dose and standard-dose settings. This may be beneficial in reducing false-negative diagnosis in lung cancer screening, standard chest examinations and the search for metastases...
  84. doi Silicon carbide as a heat-enhancing agent in microwave ablation: in vitro experiments
    P Isfort
    Department of Diagnostic and Interventional Radiology, University Hospital, RWTH Aachen, Pauwelsstrasse 30 52074, Aachen, Germany
    Cardiovasc Intervent Radiol 34:833-8. 2011
    ..Silicon carbide (SiC) is an inert compound material with excellent microwave absorption and heat-conducting properties. The aim of our study was to investigate the heat-enhancing effects of SiC in microwave ablation in an in vitro setting...
  85. ncbi [A differentiated approach to the diagnosis of pulmonary embolism and deep venous thrombosis using multi-slice CT]
    J E Wildberger
    Klinik für Radiologische Diagnostik, Germany
    Rofo 174:301-7. 2002
    ..To establish a differentiated protocol for multi-slice CT (MSCT) examinations in cases of clinically suspected pulmonary embolism (PE) using pulmonary CT-angiography (CTA) and indirect CT-phlebography (CTP)...
  86. doi Carotid plaque analysis: comparison of dual-source computed tomography (CT) findings and histopathological correlation
    M Das
    Department of Diagnostic Radiology, RWTH Aachen University, Aachen, NRW, Germany
    Eur J Vasc Endovasc Surg 38:14-9. 2009
    ..Thus, the purpose of our study was to evaluate the findings of preoperative dual-source computed tomography (DSCT) of carotid plaque morphology and correlate these findings with histopathological findings...
  87. ncbi Individually adapted examination protocols for reduction of radiation exposure in chest CT
    J E Wildberger
    Department of Diagnostic Radiology, Aachen, and Siemens Medical Solutions, Computed Tomography, Forchheim, Germany
    Invest Radiol 36:604-11. 2001
    ..To develop a simple directive for the reduction of radiation exposure without loss of diagnostic information in routine chest CT examinations...
  88. doi Pediatric multidetector computed tomography using tube current modulation and a patient image gallery
    D Honnef
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, D 52074 Aachen, Germany
    Acta Radiol 49:475-83. 2008
    ..Dose reduction is crucial in pediatric multidetector computed tomography (MDCT)...
  89. doi MDCT angiography of the pulmonary arteries: intravascular contrast enhancement does not depend on iodine concentration when injecting equal amounts of iodine at standardized iodine delivery rates
    S Keil
    Department of Diagnostic Radiology, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074, Aachen, Germany
    Eur Radiol 18:1690-5. 2008
    ..In conclusion, the use of standardized IDR and overall iodine load provides comparable intravascular CM density in pulmonary 16-MDCTA for delivering contrast materials with different iodine concentrations...
  90. doi Fluid-modulated bipolar radiofrequency ablation: an ex-vivo evaluation study
    P Bruners
    Applied Medical Engineering and Department for Diagnostic Radiology, Helmholtz Institute for Biomedical Engineering, RWTH Aachen University Hospital, Aachen, Germany
    Acta Radiol 49:258-66. 2008
    ..The effect of radiofrequency ablation (RFA) can be modulated by fluid injection...
  91. ncbi Radiation dose reduction to breast and thyroid during MDCT: effectiveness of an in-plane bismuth shield
    C Hohl
    Department of Diagnostic Radiology, University of Technology of Aachen, Aachen, Germany
    Acta Radiol 47:562-7. 2006
    ..To evaluate dose reduction and image deterioration using in-plane bismuth breast-shielding and thyroid-shielding for MDCT...
  92. ncbi [Percutaneous radiofrequency ablation of renal cell cancer]
    J Tacke
    Klinik für Radiologische Diagnostik, Universitatsklinikum Aachen
    Radiologe 44:358-63. 2004
    ..A randomized controlled study comparing RFA and surgery is necessary to answer the question whether RFA can be considered therapy of first choice even for patients, who are according to the actual evidence surgical candidates...
  93. ncbi Estimation of radiation exposure in low-dose multislice computed tomography of the heart and comparison with a calculation program
    C Hohl
    Department of Diagnostic Radiology, University of Technology of Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 16:1841-6. 2006
    ..9% to 55.9% and were statistically significant (P<0.05). The comparison with the calculated organ doses showed that the calculation program can predict the relative dose reduction of cardiac low photon-energy protocols precisely...
  94. ncbi Calcium scoring of aortic valve calcification in aortic valve stenosis with a multislice computed tomography scanner: non-enhanced versus contrast-enhanced studies
    G Mühlenbruch
    Department of Diagnostic Radiology, Department of Cardiology, Institute of Medical Statistics, University Hospital RWTH Aachen, Germany
    Acta Radiol 46:561-6. 2005
    ..Previous studies have shown a positive correlation between amount of aortic valve calcification (AVC) and degree of aortic valve stenosis (AVS). We have investigated whether calcium scoring of AVC from contrast-enhanced images is reliable...
  95. ncbi Echocardiogram-gated multislice spiral CT in functionally univentricular heart following long-lasting Waterston-Cooley anastomosis
    K M Ruhl
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Australas Radiol 50:490-4. 2006
    ..Imaging findings and clinical symptoms are discussed with emphasis on echocardiogram-gated multislice spiral CT...
  96. ncbi Initial and mid-term results of a 4F compatible self-expanding low strut profile nitinol stent in the superficial femoral artery
    G Mühlenbruch
    Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Rofo 179:733-8. 2007
    ..To evaluate the initial and mid-term results of a new self-expanding low strut profile nitinol stent for treatment of atherosclerotic lesions stenoses and occlusions in the superficial femoral artery (SFA)...
  97. ncbi Phase-inversion tissue harmonic imaging compared to fundamental B-mode ultrasound in the evaluation of the pathology of large and small bowel
    T Schmidt
    Department of Diagnostic Radiology, RWTH Aachen University Hospital, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 15:2021-30. 2005
    ..PIHI significantly enhances sonography of the intestine by offering better overall image quality, better visualization of bowel pathology and associated changes. Additionally, PIHI adds crucial diagnostic information in several patients...
  98. ncbi [Application of a stand-alone interbody fusion cage based on a novel porous TiO2/glass composite. I. Implantation in the sheep cervical spine and radiological evaluation]
    M C Korinth
    Neurochirurgische Universitatsklinik, RWTH Aachen
    Biomed Tech (Berl) 49:356-63. 2004
    ..We demonstrated the radiological changes of the fused segments during several months and analysed them morphologically, before the biomechanical evaluation will be presented in a subsequent publication...
  99. doi Contrast enhancement in multidetector-row computed tomography (MDCT) of the abdomen: intraindividual comparison of contrast media containing 300 mg versus 370 mg iodine per ml
    F F Behrendt
    Department of Diagnostic Radiology, University Hospital RWTH Aachen, Pauwelsstrasse 30, 52057 Aachen, Germany
    Eur Radiol 18:1199-205. 2008
    ..05). Given an injection protocol with constant total iodine load and constant iodine delivery rate, the iodine concentration of contrast media does not significantly influence abdominal contrast enhancement in the portal venous phase...
  100. ncbi [Heart tumors: magnetic resonance imaging and multislice spiral CT]
    G A Krombach
    Klinik für Radiologische Diagnostik, Universitatsklinikum Aachen
    Rofo 177:1205-18. 2005
    ..This article provides an overview of examination protocols of MRI and CT for cases in which a cardiac mass is suspected and describes the appearance of primary and secondary cardiac masses as well as intracavitary thrombi...
  101. ncbi Multi-slice CT for visualization of acute pulmonary embolism: single breath-hold subtraction technique
    J E Wildberger
    Department of Diagnostic Radiology, University of Technology, Aachen, Germany
    Rofo 177:17-23. 2005
    ..The purpose of our preliminary animal study was to evaluate the feasibility of a new subtraction technique for visualization of perfusion defects within the lung parenchyma in segmental and subsegmental pulmonary embolism (PE)...