Stephan Orzada

Stephan Orzada, PhD

Scientist



Room: OG 0.18
Phone: +49 201 183-6074
Email: stephan.orzada@uni-due.de
VCard:

About me

2017:    Magna Cum Laude Merit Award of the ISMRM for "A 32-Channel transmit system add-on for 7 Tesla body imaging"

2016:    Nomination for "Junges Kolleg der Nordrhein-Westfälischen Akademie der Wissenschaften" by the President of the University of Duisburg-Essen

2016:    Magna Cum Laude Merit Award of the ISMRM for "A method to approximate maximum local SAR in multi-channel transmit MR systems without transmit phase information"

2014:    “The Erwin L. Hahn Institute award for young scientists” of the Erwin L. Hahn Institute for the Thesis „New Excitation Concepts for Ultra-High-Field Human MRI“

2012:    Magna Cum Laude Merit Award of the ISMRM for "A 16-channel micro strip Tx/Rx array for bilateral breast imaging at 7 Tesla"

2011:    Gorter Award of the German Chapter ISMRM for "Time Interleaved Acquisition of Modes (TIAMO)"

Interests

  • MRI Coil arrays (Tx and Rx)
  • MRI Transmit Hardware
  • Methods for B1-homogeneity

CV

since 2013Erwin L. Hahn Institute for MRI (Post-Doc)
2008 - 2013Erwin L. Hahn Institute for MRI (PhD-Student)
2001 - 2007University of Duisburg-Essen (University Student Electrical Engineering)
1990 - 2000Gymnasium in den Filder Benden (Highschool Student)

Publications (49)

  • Rietsch SHG, S Brunheim, S Orzada, MN Voelker, S Maderwald, AK Bitz, M Gratz, ME Ladd, HH Quick, Development and evaluation of a 16-channel receive-only RF coil to improve 7T ultra-high field body MRI with focus on the spine., Magnetic resonance in medicine (2019)
  • Rietsch SHG, S Orzada, S Maderwald, S Brunheim, BWJ Philips, TWJ Scheenen, ME Ladd, HH Quick, 7T ultra-high field body MR imaging with an 8-channel transmit/32-channel receive radiofrequency coil array., Medical physics (2018)
  • Pfaffenrot V, S Brunheim, SHG Rietsch, PJ Koopmans, TM Ernst, O Kraff, S Orzada, HH Quick, An 8/15-channel Tx/Rx head neck RF coil combination with region-specific B1+ shimming for whole-brain MRI focused on the cerebellum at 7T., Magnetic resonance in medicine (2018)
  • Goebel J, F Nensa, HP Schemuth, S Maderwald, T Schlosser, S Orzada, S Rietsch, HH Quick, K Nassenstein, Feasibility of aortic valve planimetry at 7 T ultrahigh field MRI: Comparison to aortic valve MRI at 3 T and 1.5 T., European journal of radiology open (2018)
  • Rietsch SHG, V Pfaffenrot, AK Bitz, S Orzada, S Brunheim, A Lazik-Palm, JM Theysohn, ME Ladd, HH Quick, O Kraff, An 8-channel transceiver 7-channel receive RF coil setup for high SNR ultrahigh-field MRI of the shoulder at 7T., Medical physics (2017)
  • Brunheim S, M Gratz, S Johst, AK Bitz, TM Fiedler, ME Ladd, HH Quick, S Orzada, Fast and accurate multi-channel B1+ mapping based on the TIAMO technique for 7T UHF body MRI., Magnetic resonance in medicine (2017)
  • Rietsch SHG, S Orzada, AK Bitz, M Gratz, ME Ladd, HH Quick, Parallel transmit capability of various RF transmit elements and arrays at 7T MRI., Magnetic resonance in medicine (2017)
  • Beiderwellen K, O Kraff, A Laader, S Maderwald, S Orzada, ME Ladd, M Forsting, TC Lauenstein, L Umutlu, Contrast enhanced renal MR angiography at 7 Tesla: How much gadolinium do we need?, European journal of radiology (2017)
  • Orzada S, A Bitz, S Johst, M Gratz, M Völker, O Kraff, A Abuelhaija, T Fiedler, K Solbach, H Quick, M Ladd, Analysis of an integrated 8-Channel Tx/Rx body array for use as a body coil in 7-Tesla MRI, Frontiers in Physics (2017)
  • Philips BWJ, AS Fortuin, S Orzada, TWJ Scheenen, MC Maas, High resolution MR imaging of pelvic lymph nodes at 7 Tesla., Magnetic resonance in medicine (2016)
  • Orzada S, ME Ladd, AK Bitz, A method to approximate maximum local SAR in multichannel transmit MR systems without transmit phase information., Magnetic resonance in medicine (2016)
  • Hahnemann ML, O Kraff, S Maderwald, S Johst, S Orzada, L Umutlu, ME Ladd, HH Quick, TC Lauenstein, Non-enhanced magnetic resonance imaging of the small bowel at 7 Tesla in comparison to 1.5 Tesla: First steps towards clinical application., Magnetic resonance imaging (2016)
  • Lagemaat MW, V Breukels, EK Vos, AB Kerr, MJv Uden, S Orzada, AK Bitz, MC Maas, TWJ Scheenen, (1)H MR spectroscopic imaging of the prostate at 7T using spectral-spatial pulses., Magnetic resonance in medicine (2016)
  • Bank BLvd, S Orzada, F Smits, MW Lagemaat, CT Rodgers, AK Bitz, TWJ Scheenen, Optimized (31)P MRS in the human brain at 7T with a dedicated RF coil setup., NMR in biomedicine (2015)
  • Hahnemann ML, O Kraff, S Orzada, L Umutlu, S Kinner, ME Ladd, HH Quick, TC Lauenstein, T1-Weighted Contrast-Enhanced Magnetic Resonance Imaging of the Small Bowel: Comparison Between 1.5 and 7 T., Investigative radiology (2015)
  • Rietsch SHG, HH Quick, S Orzada, Impact of different meander sizes on the RF transmit performance and coupling of microstrip line elements at 7 T., Medical physics (2015)
  • Lagemaat MW, MC Maas, EK Vos, AK Bitz, S Orzada, E Weiland, MJv Uden, T Kobus, A Heerschap, TWJ Scheenen, (31) P MR spectroscopic imaging of the human prostate at 7 T: T1 relaxation times, Nuclear Overhauser Effect, and spectral characterization., Magnetic resonance in medicine (2015)
  • Johst S, S Maderwald, A Fischer, HH Quick, ME Ladd, S Orzada, Investigation of the saturation pulse artifact in non-enhanced MR angiography of the lower extremity arteries at 7 Tesla., PloS one (2015)
  • Vos EK, MW Lagemaat, JO Barentsz, JJ Fütterer, P Zámecnik, H Roozen, S Orzada, AK Bitz, MC Maas, TWJ Scheenen, Image quality and cancer visibility of T2-weighted magnetic resonance imaging of the prostate at 7 Tesla., European radiology (2014)
  • Maas MC, EK Vos, MW Lagemaat, AK Bitz, S Orzada, T Kobus, O Kraff, S Maderwald, ME Ladd, TWJ Scheenen, Feasibility of T2 -weighted turbo spin echo imaging of the human prostate at 7 tesla., Magnetic resonance in medicine (2014)
  • Fischer A, O Kraff, S Orzada, F Nensa, LC Schäfer, ME Ladd, L Umutlu, TC Lauenstein, Ultrahigh-field imaging of the biliary tract at 7 T: initial results of gadoxetic acid-enhanced magnetic resonance cholangiography., Investigative radiology (2014)
  • Lagemaat MW, EK Vos, MC Maas, AK Bitz, S Orzada, MJv Uden, T Kobus, A Heerschap, TWJ Scheenen, Phosphorus magnetic resonance spectroscopic imaging at 7 T in patients with prostate cancer., Investigative radiology (2014)
  • Theysohn JM, O Kraff, N Theysohn, S Orzada, S Landgraeber, ME Ladd, TC Lauenstein, Hip imaging of avascular necrosis at 7 Tesla compared with 3 Tesla., Skeletal radiology (2014)
  • Fischer A, S Maderwald, S Johst, S Orzada, ME Ladd, L Umutlu, TC Lauenstein, H Kniemeyer, K Nassenstein, Initial evaluation of non-contrast-enhanced magnetic resonance angiography in patients with peripheral arterial occlusive disease at 7 T., Investigative radiology (2014)
  • Zaun G, Y Zahedi, S Maderwald, S Orzada, C Pütter, A Scherag, E Winterhager, ME Ladd, R Grümmer, Repetitive exposure of mice to strong static magnetic fields in utero does not impair fertility in adulthood but may affect placental weight of offspring., Journal of magnetic resonance imaging : JMRI (2014)
  • Zahedi Y, G Zaun, S Maderwald, S Orzada, C Pütter, A Scherag, E Winterhager, ME Ladd, R Grümmer, Impact of repetitive exposure to strong static magnetic fields on pregnancy and embryonic development of mice., Journal of magnetic resonance imaging : JMRI (2014)
  • Johst S, S Orzada, A Fischer, L Umutlu, ME Ladd, S Maderwald, Comparison of fat saturation techniques for single-shot fast spin echo sequences for 7-T body imaging., Investigative radiology (2014)
  • Johst S, S Orzada, A Fischer, LC Schäfer, K Nassenstein, L Umutlu, TC Lauenstein, ME Ladd, S Maderwald, Sequence comparison for non-enhanced MRA of the lower extremity arteries at 7 Tesla., PloS one (2014)
  • Theysohn JM, O Kraff, S Orzada, N Theysohn, T Classen, S Landgraeber, ME Ladd, TC Lauenstein, Bilateral hip imaging at 7 Tesla using a multi-channel transmit technology: initial results presenting anatomical detail in healthy volunteers and pathological changes in patients with avascular necrosis of the femoral head., Skeletal radiology (2013)
  • Umutlu L, O Kraff, A Fischer, S Kinner, S Maderwald, K Nassenstein, F Nensa, J Grüneisen, S Orzada, AK Bitz, M Forsting, ME Ladd, TC Lauenstein, Seven-Tesla MRI of the female pelvis., European radiology (2013)
  • Orzada S, S Johst, S Maderwald, AK Bitz, K Solbach, ME Ladd, Mitigation of B1(+) inhomogeneity on single-channel transmit systems with TIAMO., Magnetic resonance in medicine (2013)
  • Fischer A, S Maderwald, S Orzada, S Johst, LC Schäfer, ME Ladd, K Nassenstein, L Umutlu, TC Lauenstein, Nonenhanced magnetic resonance angiography of the lower extremity vessels at 7 tesla: initial experience., Investigative radiology (2013)
  • Umutlu L, AK Bitz, S Maderwald, S Orzada, S Kinner, O Kraff, I Brote, SC Ladd, T Schroeder, M Forsting, G Antoch, ME Ladd, HH Quick, TC Lauenstein, Contrast-enhanced ultra-high-field liver MRI: a feasibility trial., European journal of radiology (2013)
  • Umutlu L, S Maderwald, S Kinner, O Kraff, AK Bitz, S Orzada, S Johst, K Wrede, M Forsting, ME Ladd, TC Lauenstein, HH Quick, First-pass contrast-enhanced renal MRA at 7 Tesla: initial results., European radiology (2013)
  • Kraff O, KH Wrede, T Schoemberg, P Dammann, Y Noureddine, S Orzada, ME Ladd, AK Bitz, MR safety assessment of potential RF heating from cranial fixation plates at 7 T., Medical physics (2013)
  • Grams AE, O Kraff, J Kalkmann, S Orzada, S Maderwald, ME Ladd, M Forsting, ER Gizewski, Magnetic resonance imaging of cranial nerves at 7 Tesla., Clinical neuroradiology (2013)
  • Orzada S, O Kraff, S Maderwald, M Gratz, A Fischer, ME Ladd, Klinische Bildgebung in der Forschung: Ultrahochfeld-MRT - methodische Entwicklungen, Medizinforschung (2013)
  • Kobus T, AK Bitz, MJv Uden, MW Lagemaat, E Rothgang, S Orzada, A Heerschap, TWJ Scheenen, In vivo 31P MR spectroscopic imaging of the human prostate at 7 T: safety and feasibility., Magnetic resonance in medicine (2012)
  • Nassenstein K, S Orzada, L Haering, A Czylwik, C Jensen, T Schlosser, O Bruder, ME Ladd, S Maderwald, Cardiac magnetic resonance: is phonocardiogram gating reliable in velocity-encoded phase contrast imaging?, European radiology (2012)
  • Orzada S, S Maderwald, BA Poser, S Johst, S Kannengiesser, ME Ladd, AK Bitz, Time-interleaved acquisition of modes: an analysis of SAR and image contrast implications., Magnetic resonance in medicine (2012)
  • Nassenstein K, S Orzada, L Haering, A Czylwik, M Zenge, H Eberle, T Schlosser, O Bruder, E Müller, ME Ladd, S Maderwald, Cardiac MRI: evaluation of phonocardiogram-gated cine imaging for the assessment of global und regional left ventricular function in clinical routine., European radiology (2012)
  • Umutlu L, O Kraff, S Orzada, A Fischer, S Kinner, S Maderwald, G Antoch, HH Quick, M Forsting, ME Ladd, TC Lauenstein, Dynamic contrast-enhanced renal MRI at 7 Tesla: preliminary results., Investigative radiology (2011)
  • Dammann P, O Kraff, KH Wrede, N Özkan, S Orzada, OM Mueller, IE Sandalcioglu, U Sure, ER Gizewski, ME Ladd, T Gasser, Evaluation of hardware-related geometrical distortion in structural MRI at 7 Tesla for image-guided applications in neurosurgery., Academic radiology (2011)
  • Koopmans PJ, M Barth, S Orzada, DG Norris, Multi-echo fMRI of the cortical laminae in humans at 7 T., NeuroImage (2011)
  • Umutlu L, S Orzada, S Kinner, S Maderwald, I Brote, AK Bitz, O Kraff, SC Ladd, G Antoch, ME Ladd, HH Quick, TC Lauenstein, Renal imaging at 7 Tesla: preliminary results., European radiology (2011)
  • Orzada S, AK Bitz, LC Schäfer, SC Ladd, ME Ladd, S Maderwald, Open design eight-channel transmit/receive coil for high-resolution and real-time ankle imaging at 7 T., Medical physics (2011)
  • Orzada S, S Maderwald, BA Poser, AK Bitz, HH Quick, ME Ladd, RF excitation using time interleaved acquisition of modes (TIAMO) to address B1 inhomogeneity in high-field MRI., Magnetic resonance in medicine (2010)
  • Orzada S, S Maderwald, SL Göricke, N Parohl, SC Ladd, ME Ladd, HH Quick, Design and comparison of two eight-channel transmit/receive radiofrequency arrays for in vivo rodent imaging on a 7 T human whole-body MRI system., Medical physics (2010)
  • Kraff O, AK Bitz, S Kruszona, S Orzada, LC Schaefer, JM Theysohn, S Maderwald, ME Ladd, HH Quick, An eight-channel phased array RF coil for spine MR imaging at 7 T., Investigative radiology (2009)
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