Torsten Sommer

Summary

Affiliation: University of Bonn
Country: Germany

Publications

  1. ncbi request reprint [High field MR imaging: magnetic field interactions of aneurysm clips, coronary artery stents and iliac artery stents with a 3.0 Tesla MR system]
    T Sommer
    Radiologische Universitätsklinik Bonn
    Rofo 176:731-8. 2004
  2. ncbi request reprint MR imaging and cardiac pacemakers: in-vitro evaluation and in-vivo studies in 51 patients at 0.5 T
    T Sommer
    Dept of Radiology, University of Bonn, Sigmund Freud Str 25, 53127 Bonn, Germany
    Radiology 215:869-79. 2000
  3. ncbi request reprint [Submillimeter 3D coronary MR angiography with real-time navigator correction in 107 patients with suspected coronary artery disease]
    T Sommer
    Radiologische Universitätsklinik Bonn
    Rofo 174:459-66. 2002
  4. ncbi request reprint [Stress cine MRI for detection of coronary artery disease]
    T Sommer
    Radiologische Universitätsklinik Bonn, Germany
    Rofo 174:605-13. 2002
  5. ncbi request reprint Coronary MR angiography at 3.0 T versus that at 1.5 T: initial results in patients suspected of having coronary artery disease
    Torsten Sommer
    Department of Radiology, University of Bonn, Sigmund Freud Strasse 25, D 53105 Bonn, Germany
    Radiology 234:718-25. 2005
  6. ncbi request reprint Strategy for safe performance of extrathoracic magnetic resonance imaging at 1.5 tesla in the presence of cardiac pacemakers in non-pacemaker-dependent patients: a prospective study with 115 examinations
    Torsten Sommer
    University of Bonn, Department of Radiology, Bonn, Germany
    Circulation 114:1285-92. 2006
  7. doi request reprint Incidence and predictors of silent cerebral embolism during pulmonary vein catheter ablation for atrial fibrillation
    Jan Wilko Schrickel
    Department of Medicine Cardiology, University of Bonn, Sigmund Freud Strasse 25, Bonn 53105, Germany
    Europace 12:52-7. 2010
  8. pmc Combined myocardial stress perfusion imaging and myocardial stress tagging for detection of coronary artery disease at 3 Tesla
    Daniel Thomas
    Department of Radiology, University of Bonn, Bonn, Germany
    J Cardiovasc Magn Reson 10:59. 2008
  9. doi request reprint Safety of brain 3-T MR imaging with transmit-receive head coil in patients with cardiac pacemakers: pilot prospective study with 51 examinations
    Claas P Naehle
    Department of Radiology, University of Bonn, Sigmund Freud Strasse 25, 53127 Bonn, Germany
    Radiology 249:991-1001. 2008
  10. ncbi request reprint High-resolution myocardial stress perfusion at 3 T in patients with suspected coronary artery disease
    Carsten Meyer
    Department of Radiology, University of Bonn, Sigmund Freud Str 25, 53129, Bonn, Germany
    Eur Radiol 18:226-33. 2008

Collaborators

Detail Information

Publications38

  1. ncbi request reprint [High field MR imaging: magnetic field interactions of aneurysm clips, coronary artery stents and iliac artery stents with a 3.0 Tesla MR system]
    T Sommer
    Radiologische Universitätsklinik Bonn
    Rofo 176:731-8. 2004
    ..To evaluate magnetic field interactions of commonly used biomedical implants at 3.0 Tesla...
  2. ncbi request reprint MR imaging and cardiac pacemakers: in-vitro evaluation and in-vivo studies in 51 patients at 0.5 T
    T Sommer
    Dept of Radiology, University of Bonn, Sigmund Freud Str 25, 53127 Bonn, Germany
    Radiology 215:869-79. 2000
    ..To evaluate the safety and feasibility of magnetic resonance (MR) imaging at 0.5 T in patients with implanted cardiac pacemakers...
  3. ncbi request reprint [Submillimeter 3D coronary MR angiography with real-time navigator correction in 107 patients with suspected coronary artery disease]
    T Sommer
    Radiologische Universitätsklinik Bonn
    Rofo 174:459-66. 2002
    ..To evaluate the clinical value of high-resolution coronary MR angiography (coronary MRA) in a large group of patients with suspected coronary artery disease...
  4. ncbi request reprint [Stress cine MRI for detection of coronary artery disease]
    T Sommer
    Radiologische Universitätsklinik Bonn, Germany
    Rofo 174:605-13. 2002
    ..Currently, stress MRI is already a realistic clinical alternative for the non-invasive assessment of CAD in patients with impaired image quality in echocardiography...
  5. ncbi request reprint Coronary MR angiography at 3.0 T versus that at 1.5 T: initial results in patients suspected of having coronary artery disease
    Torsten Sommer
    Department of Radiology, University of Bonn, Sigmund Freud Strasse 25, D 53105 Bonn, Germany
    Radiology 234:718-25. 2005
    ..0 T in patients suspected of having coronary artery disease and to prospectively compare these results with those of coronary MR angiography performed at 1.5 T...
  6. ncbi request reprint Strategy for safe performance of extrathoracic magnetic resonance imaging at 1.5 tesla in the presence of cardiac pacemakers in non-pacemaker-dependent patients: a prospective study with 115 examinations
    Torsten Sommer
    University of Bonn, Department of Radiology, Bonn, Germany
    Circulation 114:1285-92. 2006
    ..The purpose of the present study was to evaluate a strategy for safe performance of extrathoracic magnetic resonance imaging (MRI) in non-pacemaker-dependent patients with cardiac pacemakers...
  7. doi request reprint Incidence and predictors of silent cerebral embolism during pulmonary vein catheter ablation for atrial fibrillation
    Jan Wilko Schrickel
    Department of Medicine Cardiology, University of Bonn, Sigmund Freud Strasse 25, Bonn 53105, Germany
    Europace 12:52-7. 2010
    ..We aimed to investigate the incidence and predictors of silent cerebral embolism associated with PV catheter ablation, detected by diffusion-weighted magnetic resonance imaging (DW-MRI)...
  8. pmc Combined myocardial stress perfusion imaging and myocardial stress tagging for detection of coronary artery disease at 3 Tesla
    Daniel Thomas
    Department of Radiology, University of Bonn, Bonn, Germany
    J Cardiovasc Magn Reson 10:59. 2008
    ..We investigated the diagnostic impact of a combined stress perfusion-tagging protocol for detection of CAD at 3 Tesla...
  9. doi request reprint Safety of brain 3-T MR imaging with transmit-receive head coil in patients with cardiac pacemakers: pilot prospective study with 51 examinations
    Claas P Naehle
    Department of Radiology, University of Bonn, Sigmund Freud Strasse 25, 53127 Bonn, Germany
    Radiology 249:991-1001. 2008
    ..To evaluate the safety and feasibility of 3-T magnetic resonance (MR) imaging of the brain in patients with implanted cardiac pacemakers (PMs) by using a transmit-receive head coil...
  10. ncbi request reprint High-resolution myocardial stress perfusion at 3 T in patients with suspected coronary artery disease
    Carsten Meyer
    Department of Radiology, University of Bonn, Sigmund Freud Str 25, 53129, Bonn, Germany
    Eur Radiol 18:226-33. 2008
    ..The presence of dark rim artifacts does not appear to represent a diagnostic problem when using a HRPI approach...
  11. doi request reprint Magnetic resonance imaging at 1.5-T in patients with implantable cardioverter-defibrillators
    Claas P Naehle
    Department of Radiology, University of Bonn, Bonn, Germany
    J Am Coll Cardiol 54:549-55. 2009
    ..Our aim was to establish and evaluate a strategy for safe performance of magnetic resonance imaging (MRI) at 1.5-T in patients with implantable cardioverter-defibrillators (ICDs)...
  12. ncbi request reprint Triggered replenishment imaging reduces variability of quantitative myocardial contrast echocardiography and allows assessment of myocardial blood flow reserve
    Alexander Ghanem
    Department of Medicine Cardiology, University of Bonn, Bonn, Germany
    Echocardiography 24:149-58. 2007
    ..88x + 0.45, r = 0.83, P < 0.0001), without systematic bias. TRI significantly reduces variability of RK in quantitative MCE. Assessment of MBFR allows investigator-independent evaluation of CAD...
  13. doi request reprint Evaluation of cumulative effects of MR imaging on pacemaker systems at 1.5 Tesla
    Claas P Naehle
    Department of Radiology, University of Bonn, Bonn, Germany
    Pacing Clin Electrophysiol 32:1526-35. 2009
    ..The purpose of this study was to evaluate possible cumulative effects of repeated magnetic resonance imaging (MRI) examinations on pacemaker systems in patients with cardiac pacemakers...
  14. doi request reprint Low-field magnetic resonance imaging: increased safety for pacemaker patients?
    Katharina Strach
    Department of Radiology, University Hospital Bonn, Sigmund Freud Street 25, Bonn 53105, Germany
    Europace 12:952-60. 2010
    ..2 T, in pacemaker (PM) patients without limitations on scan region, PM dependency, or the presence of abandoned leads...
  15. doi request reprint Clinical, genetic, and cardiac magnetic resonance imaging findings in primary desminopathies
    Katharina Strach
    Department of Radiology, University Hospital Bonn, Sigmund Freud Str 25, 53105 Bonn, Germany
    Neuromuscul Disord 18:475-82. 2008
    ..Therefore, cardiac MRI may serve as a screening tool to identify patients at risk, which might benefit from early pharmacological and/or interventional (e.g. implantable cardioverter-defibrillator devices) therapy...
  16. ncbi request reprint High spatial resolution contrast-enhanced MR angiography of the supraaortic arteries using the quadrature body coil at 3.0T: a feasibility study
    Winfried A Willinek
    Department of Radiology, University of Bonn, Sigmund Freud Strasse 25, 53105, Bonn, Germany
    Eur Radiol 17:618-25. 2007
    ..CE MRA of the supraaortic arteries is feasible at 3.0T using a large FOV of 350 mm. The signal gain at 3.0T enables high spatial resolution contrast-enhanced MR angiography by using the built-in quadrature body coil only...
  17. ncbi request reprint Strategy for safe performance of magnetic resonance imaging on a patient with implantable cardioverter defibrillator
    Claas Philip Naehle
    Department of Radiology, University of Bonn, Bonn, Germany
    Pacing Clin Electrophysiol 29:113-6. 2006
    ..This case demonstrates that in exceptional circumstances, in carefully selected patients, and using special precautions, an MRI exam of the brain may be possible in patients with ICDs...
  18. ncbi request reprint Cerebral diffusion-weighted magnetic resonance imaging: a tool to monitor the thrombogenicity of left atrial catheter ablation
    Lars Lickfett
    Department of Medicine Cardiology, University of Bonn, Bonn, Germany
    J Cardiovasc Electrophysiol 17:1-7. 2006
    ..The aim of the current study was to examine the use of diffusion-weighted magnetic resonance imaging (DW-MRI) for detection of cerebral embolism, apparent as well as silent, caused by PV catheter ablation...
  19. ncbi request reprint Fate of left atrial thrombi in patients with atrial fibrillation determined by transesophageal echocardiography and cerebral magnetic resonance imaging
    Peter Bernhardt
    Department of Medicine Cardiology, University of Bonn, Bonn, Germany
    Am J Cardiol 94:801-4. 2004
    ..02). Patients with AF and atrial thrombi have a large likelihood of cerebral embolism (16%) and/or death despite oral anticoagulation therapy. Thrombus size may predict thrombus resolution under continued anticoagulation...
  20. ncbi request reprint [CT coronary angiography in patients with atrial fibrillation]
    A Kovacs
    Universitatsklinikum Bonn, Radiologische Klinik
    Rofo 177:1655-62. 2005
    ..The purpose of this study was to find out the optimal reconstruction window in MSCTA in patients with AF for each of the three major coronary arteries during the cardiac cycle...
  21. ncbi request reprint [The value of applying nitroglycerin in 3D coronary MR angiographie with real-time navigation technique]
    M Hackenbroch
    Radiologische Universitätsklinik Bonn
    Rofo 176:1133-41. 2004
    ..This study evaluates systematically whether administration of nitroglycerin improves the visualization of coronary arteries and, as a result, the detection of coronary artery stenosis during free breathing 3D coronary MR angiography...
  22. ncbi request reprint [3D motion adapted gating: a new navigator technique to shorten the acquisition time for coronary MRA]
    M Hackenbroch
    Radiologische Klinik, Universitätsklinik Bonn
    Rofo 177:350-7. 2005
    ..3D motion adapted gating (MAG) is a new adaptive navigator technique, which adapts in real time to changes of the end-expiratory position of diaphragm. This study evaluates the influence of 3D MAG on coronary MRA...
  23. ncbi request reprint [CT angiography hemodynamically relevant to renal artery stenosis. Evaluation of AXIAL, MPR, MIP and SSD reconstruction procedures under standard investigation conditions]
    K Wilhelm
    Radiologische Universitätsklinik Bonn
    Rofo 172:161-7. 2000
    ..To evaluate the various reconstruction methods of helical-CT angiography for the assessment of hemodynamically relevant renal artery stenoses in comparison to i.a. DSA...
  24. ncbi request reprint 3D motion adapted gating (3D MAG): a new navigator technique for accelerated acquisition of free breathing navigator gated 3D coronary MR-angiography
    M Hackenbroch
    Department of Radiology, University of Bonn, Sigmund Freud Str 25, 53105, Bonn, Germany
    Eur Radiol 15:1598-606. 2005
    ..05). 3D MAG provides accelerated acquisition of navigator gated coronary MRA by about 19% while maintaining image quality and diagnostic accuracy...
  25. ncbi request reprint Cardiac stress MR imaging with dobutamine
    K Strach
    Department of Radiology, University of Bonn, Sigmund Freud Str 25, 53105, Bonn, Germany
    Eur Radiol 16:2728-38. 2006
    ....
  26. ncbi request reprint [Radiologic features of inflammatory pseudotumors]
    C Schlimper
    Radiologische Universitätsklinik Bonn
    Rofo 177:1506-12. 2005
    ..For making a definite diagnosis a biopsy is often essential. The treatment options are varied and consist of surgery, high-dose steroids, irradiation, and chemotherapeutics...
  27. ncbi request reprint Biliary metal stents and air embolism: a note of caution
    C Rabe
    Department of Medicine I, University of Bonn, Bonn, Germany
    Endoscopy 38:648-50. 2006
    ..It is likely that the large diameter of metal stents and the potential for these stents to lacerate venous structures facilitate the entry of air into the venous circulation, an event which may have life-threatening consequences...
  28. ncbi request reprint Silent and apparent cerebral embolism after retrograde catheterisation of the aortic valve in valvular stenosis: a prospective, randomised study
    Heyder Omran
    Department of Medicine Cardiology, University of Bonn, Bonn, Germany
    Lancet 361:1241-6. 2003
    ..This procedure has a potential risk of neurological complications, with an unknown incidence of clinically silent embolism. We aimed to establish the frequency of clinically apparent and silent cerebral embolism after this procedure...
  29. ncbi request reprint High-resolution myocardial perfusion imaging at 3 T: comparison to 1.5 T in healthy volunteers
    K Strach
    Department of Radiology, University of Bonn, Bonn, Germany
    Eur Radiol 17:1829-35. 2007
    ..5 T. HR myocardial rest perfusion at 3 T is superior to the typical clinical perfusion protocol performed at 1.5 T with respect to the overall image quality and presence of subendocardial dark rim artifacts...
  30. ncbi request reprint In vitro and in vivo studies on continuous echo-contrast application strategies using SonoVue in a newly developed rotating pump setup
    Stefan Lohmaier
    Department of Radiology, University of Bonn, Bonn, Germany
    Ultrasound Med Biol 30:1145-51. 2004
    ..0001). The new infusion technique might thereby allow routine application of constant infusion scenarios in clinical CS...
  31. ncbi request reprint Atrial fibrillation - patients at high risk for cerebral embolism
    P Bernhardt
    Department of Medicine Cardiology, University of Bonn, Germany
    Clin Res Cardiol 95:148-53. 2006
    ..The aims of our study were to assess prognosis of patients with AF and determine a high risk group with an increased risk of cerebral embolism under oral anticoagulation...
  32. ncbi request reprint Congenitally corrected transposition of the great arteries in a 70-year-old woman diagnosed using single-detector helical CT
    J O Schwab
    University of Bonn, Bonn 53105, Germany
    AJR Am J Roentgenol 181:598. 2003
  33. doi request reprint Magnetic resonance imaging in individuals with cardiovascular implantable electronic devices
    Ariel Roguin
    Department of Cardiology, Rambam Medical Center, B Rappaport Faculty of Medicine, Technion Israel Institute of Technology, Bat Galim, PO Box 9602, Haifa 31096, Israel
    Europace 10:336-46. 2008
    ..This may have major clinical implications on current imaging practice. A strategy for the performance of MR imaging in these individuals is proposed...
  34. ncbi request reprint 64-slice multidetector coronary CT angiography: in vitro evaluation of 68 different stents
    David Maintz
    Department of Clinical Radiology, University of Muenster, Germany
    Eur Radiol 16:818-26. 2006
    ..Using 64-slice CT and high-resolution kernel, the majority of stent products show a lumen visibility of more than 50% of the stent diameter...
  35. ncbi request reprint Relationship between size of myocardial infarctions assessed by delayed contrast-enhanced MRI after primary PCI, biochemical markers, and time to intervention
    Jürgen Haase
    Red Cross Hospital Cardiology Center, Frankfurt Main, Germany
    J Interv Cardiol 17:367-73. 2004
    ....
  36. ncbi request reprint Do we need pacemakers resistant to magnetic resonance imaging?
    Claas Philip Naehle
    Europace 8:388; author reply 389. 2006
  37. ncbi request reprint Letter regarding article by Roguin et al, "Modern pacemaker and implantable cardioverter/defibrillator systems can be magnetic resonance imaging safe: in vitro and in vivo assessment of safety and function at 1.5 t"
    Torsten Sommer
    Circulation 111:e391; author reply e391-2. 2005
  38. ncbi request reprint Magnetic resonance imaging in patients with cardiac pacemakers
    Torsten Sommer
    J Am Coll Cardiol 46:561-2; author reply 562. 2005