Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Thomas M, Fiedler"'
Autor:
Stephan Orzada, Klaus Solbach, Marcel Gratz, Sascha Brunheim, Thomas M Fiedler, Sören Johst, Andreas K Bitz, Samaneh Shooshtary, Ashraf Abuelhaija, Maximilian N Voelker, Stefan H G Rietsch, Oliver Kraff, Stefan Maderwald, Martina Flöser, Mark Oehmigen, Harald H Quick, Mark E Ladd
Publikováno v:
PLoS ONE, Vol 14, Iss 9, p e0222452 (2019)
PurposeA 32-channel parallel transmit (pTx) add-on for 7 Tesla whole-body imaging is presented. First results are shown for phantom and in-vivo imaging.MethodsThe add-on system consists of a large number of hardware components, including modulators,
Externí odkaz:
https://doaj.org/article/96d260877d3d427493ea3fe92a1182c9
Purpose This study aims to find a relation between the number of channels and the computational burden for specific absorption rate (SAR) calculation using virtual observation point-based SAR compression. Methods Eleven different arrays of rectangula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3a006af4819dfabda3f3d5eb8054743
https://www.ncbi.nlm.nih.gov/pubmed/36089826
https://www.ncbi.nlm.nih.gov/pubmed/36089826
Autor:
Stephan Orzada, Andreas K. Bitz, Sören Johst, Marcel Gratz, Maximilian N. Völker, Oliver Kraff, Ashraf Abuelhaija, Thomas M. Fiedler, Klaus Solbach, Harald H. Quick, Mark E. Ladd
Publikováno v:
Frontiers in Physics, Vol 5 (2017)
Object: In this work an 8-channel array integrated into the gap between the gradient coil and bore liner of a 7-Tesla whole-body magnet is presented that would allow a workflow closer to that of systems at lower magnetic fields that have a built-in b
Externí odkaz:
https://doaj.org/article/1d05c7d0321f4b5ea62fc78aaf5e59ec
Publikováno v:
NMR in Biomedicine. 35
Longitudinally orientated dipoles and microstrip antennas have both demonstrated superior results as RF transmit elements for body imaging at 7 T MRI, and are as of today the most commonly used transmit elements. In this study, the performances of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be5a4040fa204cd22ef05e3b3a41a16f
https://doi.org/10.1002/nbm.4722
https://doi.org/10.1002/nbm.4722
Autor:
Thomas M. Fiedler, Stephan Orzada, Martina Flöser, Stefan H. G. Rietsch, Simon Schmidt, Jonathan K. Stelter, Marco Wittrich, Harald H. Quick, Andreas K. Bitz, Mark E. Ladd
Publikováno v:
NMR in Biomedicine. 35
In this study, the performance of an integrated body-imaging array for 7 T with 32 radiofrequency (RF) channels under consideration of local specific absorption rate (SAR), tissue temperature, and thermal dose limits was evaluated and the imaging per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7cc676b7af51d553a8fa874d43d372b
https://doi.org/10.1002/nbm.4656
https://doi.org/10.1002/nbm.4656
Autor:
Tanja, Platt, Reiner, Umathum, Thomas M, Fiedler, Armin M, Nagel, Andreas K, Bitz, Florian, Maier, Peter, Bachert, Mark E, Ladd, Mark O, Wielpütz, Hans-Ulrich, Kauczor, Nicolas G R, Behl
Publikováno v:
Magnetic resonance in medicine. 80(3)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::0d3f43c385ac9ed6e550a5b8a0f9c539
https://pubmed.ncbi.nlm.nih.gov/29427389
https://pubmed.ncbi.nlm.nih.gov/29427389
Autor:
Sascha, Brunheim, Marcel, Gratz, Sören, Johst, Andreas K, Bitz, Thomas M, Fiedler, Mark E, Ladd, Harald H, Quick, Stephan, Orzada
Publikováno v:
Magnetic resonance in medicine. 79(5)
Current methods for mitigation of transmit field B1+ inhomogeneities at ultrahigh field (UHF) MRI by multi-channel radiofrequency (RF) shimming rely on accurate B1+ mapping. This can be time consuming when many RF channels have to be mapped for in vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::3cc80db2d72bd4d40eb7647e0c39badc
https://pubmed.ncbi.nlm.nih.gov/28994132
https://pubmed.ncbi.nlm.nih.gov/28994132
Autor:
Sebastian C, Niesporek, Reiner, Umathum, Thomas M, Fiedler, Peter, Bachert, Mark E, Ladd, Armin M, Nagel
Publikováno v:
Magma (New York, N.Y.). 30(6)
Functional parameters can be measured with the help of quantitative non-proton MRI where exact relaxometry parameters are needed. Investigation of [Formula: see text] is often biased by strong partial volume (PV) effects. Hence, in this work a PV cor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::b4761ebd8436f825b61a45008394c572
https://pubmed.ncbi.nlm.nih.gov/28550649
https://pubmed.ncbi.nlm.nih.gov/28550649