Works by Orzada, Stephan

Results: 42

Towards Large Diameter Transmit Coils for 7‐T Head Imaging: A Detailed Comparison of a Set of Transmit Element Design Concepts.

Published in:

NMR in Biomedicine, 2025, v. 38, n. 5, p. 1, doi. 10.1002/nbm.70030

By:

Joris Hubmann, Max;
Orzada, Stephan;
Kowal, Robert;
Anton Grimm, Johannes;
Speck, Oliver;
Maune, Holger

Publication type:

Article

Investigation of the Saturation Pulse Artifact in Non-Enhanced MR Angiography of the Lower Extremity Arteries at 7 Tesla.

Published in:

PLoS ONE, 2015, v. 10, n. 3, p. 1, doi. 10.1371/journal.pone.0119845

By:

Johst, Sören;
Maderwald, Stefan;
Fischer, Anja;
Quick, Harald H.;
Ladd, Mark E.;
Orzada, Stephan

Publication type:

Article

Sequence Comparison for Non-Enhanced MRA of the Lower Extremity Arteries at 7 Tesla.

Published in:

PLoS ONE, 2014, v. 9, n. 1, p. 1, doi. 10.1371/journal.pone.0086274

By:

Johst, Sören;
Orzada, Stephan;
Fischer, Anja;
Schäfer, Lena C.;
Nassenstein, Kai;
Umutlu, Lale;
Lauenstein, Thomas C.;
Ladd, Mark E.;
Maderwald, Stefan

Publication type:

Article

USPIO-enhanced MRI of pelvic lymph nodes at 7-T: preliminary experience.

Published in:

2019

By:

Philips, Bart W. J.;
Stijns, Rutger C. H.;
Rietsch, Stefan H. G.;
Brunheim, Sascha;
Barentsz, Jelle O.;
Fortuin, Ansje S.;
Quick, Harald H.;
Orzada, Stephan;
Maas, Marnix C.;
Scheenen, Tom W. J.

Publication type:

journal article

Seven-Tesla MRI of the female pelvis.

Published in:

European Radiology, 2013, v. 23, n. 9, p. 2364, doi. 10.1007/s00330-013-2868-0

By:

Umutlu, Lale;
Kraff, Oliver;
Fischer, Anja;
Kinner, Sonja;
Maderwald, Stefan;
Nassenstein, Kai;
Nensa, Felix;
Grüneisen, Johannes;
Orzada, Stephan;
Bitz, Andreas;
Forsting, Michael;
Ladd, Mark;
Lauenstein, Thomas

Publication type:

Article

Cardiac magnetic resonance: is phonocardiogram gating reliable in velocity-encoded phase contrast imaging?

Published in:

2012

By:

Nassenstein K;
Orzada S;
Haering L;
Czylwik A;
Jensen C;
Schlosser T;
Bruder O;
Ladd ME;
Maderwald S;
Nassenstein, Kai;
Orzada, Stephan;
Haering, Lars;
Czylwik, Andreas;
Jensen, Christoph;
Schlosser, Thomas;
Bruder, Oliver;
Ladd, Mark E;
Maderwald, Stefan

Publication type:

journal article

Cardiac MRI: evaluation of phonocardiogram-gated cine imaging for the assessment of global und regional left ventricular function in clinical routine.

Published in:

European Radiology, 2012, v. 22, n. 3, p. 559, doi. 10.1007/s00330-011-2279-z

By:

Nassenstein, Kai;
Orzada, Stephan;
Haering, Lars;
Czylwik, Andreas;
Zenge, Michael;
Eberle, Holger;
Schlosser, Thomas;
Bruder, Oliver;
Müller, Edgar;
Ladd, Mark;
Maderwald, Stefan

Publication type:

Article

Renal imaging at 7 Tesla: preliminary results.

Published in:

2011

By:

Umutlu L;
Orzada S;
Kinner S;
Maderwald S;
Brote I;
Bitz AK;
Kraff O;
Ladd SC;
Antoch G;
Ladd ME;
Quick HH;
Lauenstein TC;
Umutlu, Lale;
Orzada, Stephan;
Kinner, Sonja;
Maderwald, Stefan;
Brote, Irina;
Bitz, Andreas K;
Kraff, Oliver;
Ladd, Susanne C

Publication type:

journal article

Reproducibility of Electromagnetic Field Simulations of Local Radiofrequency Transmit Elements Tailored for 7 T MRI.

Published in:

Sensors (14248220), 2025, v. 25, n. 6, p. 1867, doi. 10.3390/s25061867

By:

Hubmann, Max Joris;
Nurzed, Bilguun;
Hansen, Sam-Luca;
Kowal, Robert;
Schön, Natalie;
Wenz, Daniel;
Saha, Nandita;
Lutz, Max;
Fiedler, Thomas M.;
Orzada, Stephan;
Winter, Lukas;
Keil, Boris;
Maune, Holger;
Speck, Oliver;
Niendorf, Thoralf

Publication type:

Article

31P MR spectroscopic imaging of the human prostate at 7 T: T1 relaxation times, Nuclear Overhauser Effect, and spectral characterization.

Published in:

Magnetic Resonance in Medicine, 2015, v. 73, n. 3, p. 909, doi. 10.1002/mrm.25209

By:

Lagemaat, Miriam W.;
Maas, Marnix C.;
Vos, Eline K.;
Bitz, Andreas K.;
Orzada, Stephan;
Weiland, Elisabeth;
Uden, Mark J.;
Kobus, Thiele;
Heerschap, Arend;
Scheenen, Tom W.J.

Publication type:

Article

Feasibility of T2-weighted turbo spin echo imaging of the human prostate at 7 tesla.

Published in:

Magnetic Resonance in Medicine, 2014, v. 71, n. 5, p. 1711, doi. 10.1002/mrm.24818

By:

Maas, Marnix C.;
Vos, Eline K.;
Lagemaat, Miriam W.;
Bitz, Andreas K.;
Orzada, Stephan;
Kobus, Thiele;
Kraff, Oliver;
Maderwald, Stefan;
Ladd, Mark E.;
Scheenen, Tom W. J.

Publication type:

Article

Mitigation of B1+ inhomogeneity on single-channel transmit systems with TIAMO.

Published in:

Magnetic Resonance in Medicine, 2013, v. 70, n. 1, p. 290, doi. 10.1002/mrm.24453

By:

Orzada, Stephan;
Johst, SörEN;
Maderwald, Stefan;
Bitz, Andreas K.;
Solbach, Klaus;
Ladd, Mark E.

Publication type:

Article

In vivo 31P MR spectroscopic imaging of the human prostate at 7 T: Safety and feasibility.

Published in:

Magnetic Resonance in Medicine, 2012, v. 68, n. 6, p. 1683, doi. 10.1002/mrm.24175

By:

Kobus, Thiele;
Bitz, Andreas K.;
van Uden, Mark J.;
Lagemaat, Miriam W.;
Rothgang, Eva;
Orzada, Stephan;
Heerschap, Arend;
Scheenen, Tom W. J.

Publication type:

Article

RF excitation using time interleaved acquisition of modes (TIAMO) to address B1 inhomogeneity in high-field MRI.

Published in:

Magnetic Resonance in Medicine, 2010, v. 64, n. 2, p. 327, doi. 10.1002/mrm.22527

By:

Orzada, Stephan;
Maderwald, Stefan;
Poser, Benedikt Andreas;
Bitz, Andreas K.;
Quick, Harald H.;
Ladd, Mark E.

Publication type:

Article

Performance and safety assessment of an integrated transmit array for body imaging at 7 T under consideration of specific absorption rate, tissue temperature, and thermal dose.

Published in:

NMR in Biomedicine, 2022, v. 35, n. 5, p. 1, doi. 10.1002/nbm.4656

By:

Fiedler, Thomas M.;
Orzada, Stephan;
Flöser, Martina;
Rietsch, Stefan H. G.;
Schmidt, Simon;
Stelter, Jonathan K.;
Wittrich, Marco;
Quick, Harald H.;
Bitz, Andreas K.;
Ladd, Mark E.

Publication type:

Article

Performance analysis of integrated RF microstrip transmit antenna arrays with high channel count for body imaging at 7 T.

Published in:

NMR in Biomedicine, 2021, v. 34, n. 7, p. 1, doi. 10.1002/nbm.4515

By:

Fiedler, Thomas M.;
Orzada, Stephan;
Flöser, Martina;
Rietsch, Stefan H. G.;
Quick, Harald H.;
Ladd, Mark E.;
Bitz, Andreas K.

Publication type:

Article

Optimized 31P MRS in the human brain at 7 T with a dedicated RF coil setup.

Published in:

NMR in Biomedicine, 2015, v. 28, n. 11, p. 1570, doi. 10.1002/nbm.3422

By:

Bank, Bart L.;
Orzada, Stephan;
Smits, Frits;
Lagemaat, Miriam W.;
Rodgers, Christopher T.;
Bitz, Andreas K.;
Scheenen, Tom W. J.

Publication type:

Article

A 32-channel parallel transmit system add-on for 7T MRI.

Published in:

PLoS ONE, 2019, v. 14, n. 9, p. 1, doi. 10.1371/journal.pone.0222452

By:

Orzada, Stephan;
Solbach, Klaus;
Gratz, Marcel;
Brunheim, Sascha;
Fiedler, Thomas M.;
Johst, Sören;
Bitz, Andreas K.;
Shooshtary, Samaneh;
Abuelhaija, Ashraf;
Voelker, Maximilian N.;
Rietsch, Stefan H. G.;
Kraff, Oliver;
Maderwald, Stefan;
Flöser, Martina;
Oehmigen, Mark;
Quick, Harald H.;
Ladd, Mark E.

Publication type:

Article

Local SAR compression with overestimation control to reduce maximum relative SAR overestimation and improve multi-channel RF array performance.

Published in:

MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2021, v. 34, n. 1, p. 153, doi. 10.1007/s10334-020-00890-0

By:

Orzada, Stephan;
Fiedler, Thomas M.;
Bitz, Andreas K.;
Ladd, Mark E.;
Quick, Harald H.

Publication type:

Article

Impact of repetitive exposure to strong static magnetic fields on pregnancy and embryonic development of mice.

Published in:

Journal of Magnetic Resonance Imaging, 2014, v. 39, n. 3, p. 691, doi. 10.1002/jmri.24209

By:

Zahedi, Yasmin;
Zaun, Gregor;
Maderwald, Stefan;
Orzada, Stephan;
Pütter, Carolin;
Scherag, André;
Winterhager, Elke;
Ladd, Mark E.;
Grümmer, Ruth

Publication type:

Article

Repetitive exposure of mice to strong static magnetic fields in utero does not impair fertility in adulthood but may affect placental weight of offspring.

Published in:

Journal of Magnetic Resonance Imaging, 2014, v. 39, n. 3, p. 683, doi. 10.1002/jmri.24208

By:

Zaun, Gregor;
Zahedi, Yasmin;
Maderwald, Stefan;
Orzada, Stephan;
Pütter, Carolin;
Scherag, André;
Winterhager, Elke;
Ladd, Mark E.;
Grümmer, Ruth

Publication type:

Article

An essentially radiation‐transparent body coil integrated with a patient rotation system for MR‐guided particle therapy.

Published in:

Medical Physics, 2024, v. 51, n. 6, p. 4028, doi. 10.1002/mp.17065

By:

Dietrich, Kilian A.;
Klüter, Sebastian;
Dinkel, Fabian;
Echner, Gernot;
Brons, Stephan;
Orzada, Stephan;
Debus, Jürgen;
Ladd, Mark E.;
Platt, Tanja

Publication type:

Article

A multitransmit external body array combined with a 1H and 31P endorectal coil to enable a multiparametric and multimetabolic MRI examination of the prostate at 7T.

Published in:

Medical Physics, 2019, v. 46, n. 9, p. 3893, doi. 10.1002/mp.13696

By:

Philips, Bart W. J.;
Uden, Mark J.;
Rietsch, Stefan H. G.;
Orzada, Stephan;
Scheenen, Tom W. J.

Publication type:

Article

7T ultra‐high field body MR imaging with an 8‐channel transmit/32‐channel receive radiofrequency coil array.

Published in:

Medical Physics, 2018, v. 45, n. 7, p. 2978, doi. 10.1002/mp.12931

By:

Rietsch, Stefan H. G.;
Orzada, Stephan;
Maderwald, Stefan;
Brunheim, Sascha;
Philips, Bart W. J.;
Scheenen, Tom W. J.;
Ladd, Mark E.;
Quick, Harald H.

Publication type:

Article

An 8-channel transceiver 7-channel receive RF coil setup for high SNR ultrahigh-field MRI of the shoulder at 7T.

Published in:

Medical Physics, 2017, v. 44, n. 12, p. 6195, doi. 10.1002/mp.12612

By:

Rietsch, Stefan H. G.;
Pfaffenrot, Viktor;
Bitz, Andreas K.;
Orzada, Stephan;
Brunheim, Sascha;
Lazik‐Palm, Andrea;
Theysohn, Jens M.;
Ladd, Mark E.;
Quick, Harald H.;
Kraff, Oliver

Publication type:

Article

Impact of different meander sizes on the RF transmit performance and coupling of microstrip line elements at 7 T.

Published in:

Medical Physics, 2015, v. 42, n. 8, p. 4542, doi. 10.1118/1.4923177

By:

Rietsch, Stefan H. G.;
Quick, Harald H.;
Orzada, Stephan

Publication type:

Article

MR safety assessment of potential RF heating from cranial fixation plates at 7 T.

Published in:

Medical Physics, 2013, v. 40, n. 4, p. 042302, doi. 10.1118/1.4795347

By:

Kraff, Oliver;
Wrede, Karsten H.;
Schoemberg, Tobias;
Dammann, Philipp;
Noureddine, Yacine;
Orzada, Stephan;
Ladd, Mark E.;
Bitz, Andreas K.

Publication type:

Article

Open design eight-channel transmit/receive coil for high-resolution and real-time ankle imaging at 7 T.

Published in:

Medical Physics, 2011, v. 38, n. 3, p. 1162, doi. 10.1118/1.3553399

By:

Orzada, Stephan;
Bitz, Andreas K.;
Schäfer, Lena C.;
Ladd, Susanne C.;
Ladd, Mark E.;
Maderwald, Stefan

Publication type:

Article

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.

Published in:

Medical Physics, 2010, v. 37, n. 5, p. 2225, doi. 10.1118/1.3378478

By:

Orzada, Stephan;
Maderwald, Stefan;
Göricke, Sophia L.;
Parohl, Nina;
Ladd, Susanne C.;
Ladd, Mark E.;
Quick, Harald H.

Publication type:

Article

Local and whole‐body SAR in UHF body imaging: Implications for SAR matrix compression.

Published in:

Magnetic Resonance in Medicine, 2025, v. 93, n. 2, p. 842, doi. 10.1002/mrm.30306

By:

Fiedler, Thomas M.;
Ladd, Mark E.;
Orzada, Stephan

Publication type:

Article

Hybrid algorithms for SAR matrix compression and the impact of post‐processing on SAR calculation complexity.

Published in:

Magnetic Resonance in Medicine, 2024, v. 92, n. 6, p. 2696, doi. 10.1002/mrm.30235

By:

Orzada, Stephan;
Fiedler, Thomas M.;
Ladd, Mark E.

Publication type:

Article

An investigation into the dependence of virtual observation point‐based specific absorption rate calculation complexity on number of channels.

Published in:

Magnetic Resonance in Medicine, 2023, v. 89, n. 1, p. 469, doi. 10.1002/mrm.29434

By:

Orzada, Stephan;
Akash, Safi;
Fiedler, Thomas M.;
Kratzer, Fabian J.;
Ladd, Mark E.

Publication type:

Article

Post‐processing algorithms for specific absorption rate compression.

Published in:

Magnetic Resonance in Medicine, 2021, v. 86, n. 5, p. 2853, doi. 10.1002/mrm.28909

By:

Orzada, Stephan;
Fiedler, Thomas M.;
Quick, Harald H.;
Ladd, Mark E.

Publication type:

Article

Local SAR compression algorithm with improved compression, speed, and flexibility.

Published in:

Magnetic Resonance in Medicine, 2021, v. 86, n. 1, p. 561, doi. 10.1002/mrm.28739

By:

Orzada, Stephan;
Fiedler, Thomas M.;
Quick, Harald H.;
Ladd, Mark E.

Publication type:

Article

Development and evaluation of a 16‐channel receive‐only RF coil to improve 7T ultra‐high field body MRI with focus on the spine.

Published in:

Magnetic Resonance in Medicine, 2019, v. 82, n. 2, p. 796, doi. 10.1002/mrm.27731

By:

Rietsch, Stefan H. G.;
Brunheim, Sascha;
Orzada, Stephan;
Voelker, Maximilian N.;
Maderwald, Stefan;
Bitz, Andreas K.;
Gratz, Marcel;
Ladd, Mark E.;
Quick, Harald H.

Publication type:

Article

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.

Published in:

Magnetic Resonance in Medicine, 2018, v. 80, n. 3, p. 1252, doi. 10.1002/mrm.27125

By:

Pfaffenrot, Viktor;
Brunheim, Sascha;
Rietsch, Stefan H. G.;
Koopmans, Peter J.;
Ernst, Thomas M.;
Kraff, Oliver;
Orzada, Stephan;
Quick, Harald H.

Publication type:

Article

Fast and accurate multi‐channel mapping based on the TIAMO technique for 7T UHF body MRI.

Published in:

Magnetic Resonance in Medicine, 2018, v. 79, n. 5, p. 2652, doi. 10.1002/mrm.26925

By:

Brunheim, Sascha;
Gratz, Marcel;
Johst, Sören;
Bitz, Andreas K.;
Fiedler, Thomas M.;
Ladd, Mark E.;
Quick, Harald H.;
Orzada, Stephan

Publication type:

Article

Parallel transmit capability of various RF transmit elements and arrays at 7T MRI.

Published in:

Magnetic Resonance in Medicine, 2018, v. 79, n. 2, p. 1116, doi. 10.1002/mrm.26704

By:

Rietsch, Stefan H. G.;
Orzada, Stephan;
Bitz, Andreas K.;
Gratz, Marcel;
Ladd, Mark E.;
Quick, Harald H.

Publication type:

Article

High resolution MR imaging of pelvic lymph nodes at 7 Tesla.

Published in:

Magnetic Resonance in Medicine, 2017, v. 78, n. 3, p. 1020, doi. 10.1002/mrm.26498

By:

Philips, Bart W. J.;
Fortuin, Ansje S.;
Orzada, Stephan;
Scheenen, Tom W. J.;
Maas, Marnix C.

Publication type:

Article

A method to approximate maximum local SAR in multichannel transmit MR systems without transmit phase information.

Published in:

Magnetic Resonance in Medicine, 2017, v. 78, n. 2, p. 805, doi. 10.1002/mrm.26398

By:

Orzada, Stephan;
Ladd, Mark E.;
Bitz, Andreas K.

Publication type:

Article

1 H MR spectroscopic imaging of the prostate at 7 T using spectral-spatial pulses.

Published in:

Magnetic Resonance in Medicine, 2016, v. 75, n. 3, p. 933, doi. 10.1002/mrm.25569

By:

Lagemaat, Miriam W.;
Breukels, Vincent;
Vos, Eline K.;
Kerr, Adam B.;
van Uden, Mark J.;
Orzada, Stephan;
Bitz, Andreas K.;
Maas, Marnix C.;
Scheenen, Tom W.J.

Publication type:

Article

Magnetic resonance imaging at ultra-high magnetic field strength: An in vivo assessment of number, size and distribution of pelvic lymph nodes.

Published in:

PLoS ONE, 2020, v. 15, n. 7, p. 1, doi. 10.1371/journal.pone.0236884

By:

Fortuin, Ansje S.;
Philips, Bart W. J.;
van der Leest, Marloes M. G.;
Ladd, Mark E.;
Orzada, Stephan;
Maas, Marnix C.;
Scheenen, Tom W. J.

Publication type:

Article