Oliver Kraff

Summary

Affiliation: University of Duisburg-Essen
Country: Germany

Publications

  1. ncbi request reprint An eight-channel transmit/receive multipurpose coil for musculoskeletal MR imaging at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, 45141 Essen, Germany
    Med Phys 37:6368-76. 2010
  2. doi request reprint 7 Tesla quantitative hip MRI: a comparison between TESS and CPMG for T2 mapping
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Kokereiallee 7, Building C84, 45141, Essen, Germany
    MAGMA 29:503-12. 2016
  3. doi request reprint MR safety assessment of potential RF heating from cranial fixation plates at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, 45141 Essen, Germany
    Med Phys 40:042302. 2013
  4. ncbi request reprint MRI of the knee at 7.0 Tesla
    O Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, Universitat Duisburg Essen, Essen
    Rofo 179:1231-5. 2007
  5. doi request reprint High-resolution MRI of the human parotid gland and duct at 7 Tesla
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 44:518-24. 2009
  6. doi request reprint An eight-channel phased array RF coil for spine MR imaging at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 44:734-40. 2009
  7. doi request reprint A transmit/receive radiofrequency array for imaging the carotid arteries at 7 Tesla: coil design and first in vivo results
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 46:246-54. 2011
  8. doi request reprint Seven-Tesla MRI of the female pelvis
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany
    Eur Radiol 23:2364-73. 2013
  9. doi request reprint Renal imaging at 7 Tesla: preliminary results
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, Essen, Germany
    Eur Radiol 21:841-9. 2011
  10. doi request reprint Dynamic contrast-enhanced renal MRI at 7 Tesla: preliminary results
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University Duisburg Essen, Essen, Germany
    Invest Radiol 46:425-33. 2011

Collaborators

Detail Information

Publications37

  1. ncbi request reprint An eight-channel transmit/receive multipurpose coil for musculoskeletal MR imaging at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, 45141 Essen, Germany
    Med Phys 37:6368-76. 2010
    ..An extensive coil characterization protocol and first in vivo results of the human wrist, shoulder, elbow, knee, and ankle imaged at 7 T will be presented...
  2. doi request reprint 7 Tesla quantitative hip MRI: a comparison between TESS and CPMG for T2 mapping
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Kokereiallee 7, Building C84, 45141, Essen, Germany
    MAGMA 29:503-12. 2016
    ..We aimed to evaluate the feasibility of triple-echo steady state (TESS) T2 mapping as an alternative to conventional multi-echo-spin-echo (CPMG) T2 mapping for the quantitative assessment of hip joint cartilage at 7 T...
  3. doi request reprint MR safety assessment of potential RF heating from cranial fixation plates at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, 45141 Essen, Germany
    Med Phys 40:042302. 2013
    ....
  4. ncbi request reprint MRI of the knee at 7.0 Tesla
    O Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, Universitat Duisburg Essen, Essen
    Rofo 179:1231-5. 2007
    ..The goal of our study was to investigate and optimize various sequences for 7 T imaging of the knee...
  5. doi request reprint High-resolution MRI of the human parotid gland and duct at 7 Tesla
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 44:518-24. 2009
    ..Therefore, our study aimed to optimize sequences for high-field MR imaging of the parotid gland and duct, as well as the facial nerve at 7 T and show the potential of high field imaging...
  6. doi request reprint An eight-channel phased array RF coil for spine MR imaging at 7 T
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 44:734-40. 2009
    ..The prototype is characterized in simulations and bench measurements, and the feasibility of high-resolution spinal cord imaging at 7 T is demonstrated in in vivo images of volunteers...
  7. doi request reprint A transmit/receive radiofrequency array for imaging the carotid arteries at 7 Tesla: coil design and first in vivo results
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 46:246-54. 2011
    ..The prototype is characterized in numerical simulations and bench measurements, and the feasibility of plaque imaging at 7 T is demonstrated in first in vivo images...
  8. doi request reprint Seven-Tesla MRI of the female pelvis
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany
    Eur Radiol 23:2364-73. 2013
    ..The aim of this study was to investigate the feasibility of 7-T contrast-enhanced MR imaging of the female pelvis...
  9. doi request reprint Renal imaging at 7 Tesla: preliminary results
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, Essen, Germany
    Eur Radiol 21:841-9. 2011
    ..To investigate the feasibility of 7T MR imaging of the kidneys utilising a custom-built 8-channel transmit/receive radiofrequency body coil...
  10. doi request reprint Dynamic contrast-enhanced renal MRI at 7 Tesla: preliminary results
    Lale Umutlu
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University Duisburg Essen, Essen, Germany
    Invest Radiol 46:425-33. 2011
    ..The aim of this study was to assess the feasibility of dynamic contrast-enhanced renal magnetic resonance imaging (MRI) at 7 Tesla (T), with optimization and implementation of a dedicated examination protocol...
  11. doi request reprint 7 Tesla quantitative hip MRI: T1, T2 and T2* mapping of hip cartilage in healthy volunteers
    Andrea Lazik
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45147, Essen, Germany
    Eur Radiol 26:1245-53. 2016
    ..To evaluate the technical feasibility and applicability of quantitative MR techniques (delayed gadolinium-enhanced MRI of cartilage (dGEMRIC), T2 mapping, T2* mapping) at 7 T MRI for assessing hip cartilage...
  12. doi request reprint Morphological and Quantitative 7 T MRI of Hip Cartilage Transplants in Comparison to 3 T-Initial Experiences
    Andrea Lazik-Palm
    From the Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen Erwin L Hahn Institute for Magnetic Resonance Imaging, University of Duisburg Essen High Field and Hybrid MR Imaging, University Hospital Essen, Essen Medical Physics in Radiology, German Cancer Research Center DKFZ, Heidelberg Facharztklinik Essen and Department of Orthopaedics, University Hospital Essen, Essen, Germany
    Invest Radiol 51:552-9. 2016
    ..The aims of this study were to evaluate morphological and quantitative 7 T magnetic resonance imaging (MRI) hip sequences in patients after acetabular cartilage transplantation and to compare image quality with 3 T MRI...
  13. doi request reprint Evaluation of hardware-related geometrical distortion in structural MRI at 7 Tesla for image-guided applications in neurosurgery
    Philipp Dammann
    Erwin L Hahn Institute for Magnetic Resonance Imaging, UNESCO World Cultural Heritage Zollverein, Arendahls Wiese 199, Tor 3, University Duisburg Essen, 45141 Essen, Germany
    Acad Radiol 18:910-6. 2011
    ..Hence, we conducted a phantom study to determine hardware-related geometrical distortion in clinically relevant sequences for structural imaging at 7 T MRI and compared the findings to 1.5 T MRI...
  14. doi request reprint To TOF or not to TOF: strategies for non-contrast-enhanced intracranial MRA at 7 T
    Stefan Maderwald
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Arendahls Wiese 199, 45141 Essen, Germany
    MAGMA 21:159-67. 2008
    ..The purpose of this study was to optimize and to evaluate 3D time-of-flight (TOF)-like non-contrast enhanced MR-angiography (MRA) techniques for display of the intracranial vessels on a 7 T whole-body scanner...
  15. doi request reprint Contrast enhanced renal MR angiography at 7 Tesla: How much gadolinium do we need?
    Karsten Beiderwellen
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany Electronic address
    Eur J Radiol 86:76-82. 2017
    ..To investigate whether a dose reduction of Gadobutrol for renal magnetic resonance angiography (MRA) at 7 Tesla (T) is feasible while preserving diagnostic image quality...
  16. doi request reprint Cranial fixation plates in cerebral magnetic resonance imaging: a 3 and 7 Tesla in vivo image quality study
    Bixia Chen
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    MAGMA 29:389-98. 2016
    ..This study assesses and quantifies impairment of postoperative magnetic resonance imaging (MRI) at 7 Tesla (T) after implantation of titanium cranial fixation plates (CFPs) for neurosurgical bone flap fixation...
  17. doi request reprint Non-enhanced magnetic resonance imaging of the small bowel at 7 Tesla in comparison to 1.5 Tesla: First steps towards clinical application
    Maria L Hahnemann
    Institute of Clinical Radiology, University Hospital Muenster, University of Muenster, Muenster, Germany Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University Duisburg Essen, Essen, Germany Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany Electronic address
    Magn Reson Imaging 34:668-73. 2016
    ..To perform non-enhanced (NE) magnetic resonance imaging (MRI) of the small bowel at 7 Tesla (7T) and to compare it with 1.5 Tesla (1.5T)...
  18. doi request reprint T1-Weighted Contrast-Enhanced Magnetic Resonance Imaging of the Small Bowel: Comparison Between 1.5 and 7 T
    Maria L Hahnemann
    From the Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, and Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen Medical Physics in Radiology, German Cancer Research Center DKFZ, Heidelberg and High Field and Hybrid MR Imaging, University Hospital Essen, University Duisburg Essen, Essen, Germany
    Invest Radiol 50:539-47. 2015
    ..The purpose of this study was to evaluate the feasibility of contrast-enhanced small bowel MRI at 7 T and to compare results with 1.5 T...
  19. pmc Diffuse axonal injury at ultra-high field MRI
    Christoph Moenninghoff
    Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    PLoS ONE 10:e0122329. 2015
    ..This study aims to compare DAI-associated TMBs at 3 Tesla (T) and 7 T susceptibility weighted imaging (SWI) to evaluate possible diagnostic benefits of ultra-high field (UHF) MRI...
  20. pmc Non-enhanced T1-weighted liver vessel imaging at 7 Tesla
    Anja Fischer
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    PLoS ONE 9:e97465. 2014
    ..Aim of the study was to assess the feasibility and to compare three non-enhanced T1-weighted (w) sequences for liver vessel imaging at 7 Tesla (T)...
  21. doi request reprint 7 tesla MRI of microbleeds and white matter lesions as seen in vascular dementia
    Jens M Theysohn
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    J Magn Reson Imaging 33:782-91. 2011
    ..To evaluate 7T MRI in the assessment of cerebrovascular alterations as seen in vascular dementia by means of detection of cerebral microbleeds (CMB) and depiction of white matter lesions (WML). 7T imaging was evaluated with respect to 1.5T...
  22. doi request reprint Aspects of postoperative magnetic resonance imaging of patients with avascular necrosis of the femoral head, treated by advanced core decompression
    Andrea Lazik
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45147, Essen, Germany
    Skeletal Radiol 44:1467-75. 2015
    ....
  23. doi request reprint Ultrahigh-field imaging of the biliary tract at 7 T: initial results of gadoxetic acid-enhanced magnetic resonance cholangiography
    Anja Fischer
    From the Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen and Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    Invest Radiol 49:346-53. 2014
    ..The objectives of this study were to assess the feasibility of magnetic resonance cholangiography (MRC) using biliary-secreted gadoxetic acid at 7 T and to compare it with T2-weighted (w) MRC at 3 T...
  24. ncbi request reprint Morphological imaging and T2 and T2* mapping of hip cartilage at 7 Tesla MRI under the influence of intravenous gadolinium
    Andrea Lazik-Palm
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45147, Essen, Germany
    Eur Radiol 26:3923-3931. 2016
    ..To investigate the influence of intravenous gadolinium on cartilage T2 and T2* relaxation times and on morphological image quality at 7-T hip MRI...
  25. doi request reprint 3 Tesla high-resolution and delayed gadolinium enhanced MR imaging of cartilage (dGEMRIC) after autologous chondrocyte transplantation in the hip
    Andrea Lazik
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
    J Magn Reson Imaging 42:624-33. 2015
    ..To evaluate the feasibility of 3 Tesla (T) high-resolution and gadolinium enhanced MRI of cartilage (dGEMRIC) in the thin and rounded hip cartilage of patients after acetabular matrix-based autologous chondrocyte transplantation (MACT)...
  26. doi request reprint Experience with magnetic resonance imaging of human subjects with passive implants and tattoos at 7 T: a retrospective study
    Yacine Noureddine
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    MAGMA 28:577-90. 2015
    ..This work presents our experience in imaging volunteers with implants/tattoos at 7 T over the last seven and a half years...
  27. doi request reprint [(18)F]FDG PET/MRI vs. PET/CT for whole-body staging in patients with recurrent malignancies of the female pelvis: initial results
    Karsten Beiderwellen
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg Essen, Hufelandstrasse 55, 45147, Essen, Germany
    Eur J Nucl Med Mol Imaging 42:56-65. 2015
    ..To evaluate the diagnostic potential of PET/MRI with [(18)F]FDG in recurrent ovarian and cervical cancer in comparison to PET/CT...
  28. pmc Vestibular effects of a 7 Tesla MRI examination compared to 1.5 T and 0 T in healthy volunteers
    Jens M Theysohn
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany Institute for Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
    PLoS ONE 9:e92104. 2014
    ..5 or 0 Tesla. Radiofrequency fields, gradient switching, and orthostatic dysregulation do not seem to play a role. ..
  29. ncbi request reprint Subjective acceptance of 7 Tesla MRI for human imaging
    Jens M Theysohn
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    MAGMA 21:63-72. 2008
    ..To our knowledge, publications of subjective acceptance and willingness to undergo examinations at >3T are rare. We present first results from our research site...
  30. doi request reprint A large-scale study on subjective perception of discomfort during 7 and 1.5 T MRI examinations
    Christina Heilmaier
    Department of Diagnostic and Interventional Radiology, HELIOS Klinikum, Krefeld, Germany
    Bioelectromagnetics 32:610-9. 2011
    ..In summary, our study indicates that although certain sensations increase at 7 T compared to 1.5 T, they are unlikely to hinder the use of 7 T MRI as a clinical diagnostic tool...
  31. doi request reprint Cerebral cavernous hemangiomas at 7 Tesla: initial experience
    Marc Schlamann
    Department of Diagnostic and Interventional Radiology, University Hospital Essen, 45122 Essen, Germany
    Acad Radiol 17:3-6. 2010
    ..The aim of this study was to evaluate the benefit of magnetic resonance imaging at a field strength of 7 T in the detection of cavernomas...
  32. doi request reprint First clinical study on ultra-high-field MR imaging in patients with multiple sclerosis: comparison of 1.5T and 7T
    K Kollia
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Essen, Germany
    AJNR Am J Neuroradiol 30:699-702. 2009
    ..The purpose of this study was to investigate the potential of high-resolution imaging of MS lesions in vivo comparing 7T with conventional 1.5T...
  33. pmc Towards real-time cardiovascular magnetic resonance-guided transarterial aortic valve implantation: in vitro evaluation and modification of existing devices
    Philipp Kahlert
    Department of Cardiology, West German Heart Center Essen, University Hospital Essen, University Duisburg Essen, Hufelandstrasse 55, 45122 Essen, Germany
    J Cardiovasc Magn Reson 12:58. 2010
    ....
  34. doi request reprint Usefulness of metal artifact reduction with WARP technique at 1.5 and 3T MRI in imaging metal-on-metal hip resurfacings
    Andrea Lazik
    Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, Hufelandstr 55, 45147, Essen, Germany
    Skeletal Radiol 44:941-51. 2015
    ..To evaluate the usefulness of the metal artifact reduction technique "WARP" in the assessment of metal-on-metal hip resurfacings at 1.5 and 3T in the context of image quality and imaging speed...
  35. doi request reprint MRI at 7 Tesla and above: demonstrated and potential capabilities
    Oliver Kraff
    Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg Essen, Essen, Germany
    J Magn Reson Imaging 41:13-33. 2015
    ..Furthermore, new applications for clinical diagnostics such as X-nuclei imaging and spectroscopy, which only really become feasible at ultra-high magnetic fields, will be presented...
  36. pmc Design of a modular protein-based MRI contrast agent for targeted application
    Daniel Grum
    Research Group Structural and Medicinal Biochemistry, Centre for Medical Biotechnology, University of Duisburg Essen, Essen, Germany
    PLoS ONE 8:e65346. 2013
    ..5 or 3 t...
  37. ncbi request reprint Optimized spectrally selective steady-state free precession sequences for cartilage imaging at ultra-high fields
    O Bieri
    MR Physics, Department of Medical Radiology, University of Basel, Petersgraben 4, 4031 Basel, Switzerland
    MAGMA 21:87-94. 2008
    ..However, ultra-high fields (7.0 T and more) may offer alternative fat suppression techniques as a result of the increased chemical shift...