TY - GEN
T1 - On the superlinear increase of the ultimate intrinsic signal-to-noise ratio with regard to main magnetic field strength in a spherical sample
AU - Pfrommer, A.
AU - Henning, A.
PY - 2017/10/11
Y1 - 2017/10/11
N2 - In this study, the increase of the ultimate intrinsic signal-to-noise ratio (UISNR) with regard to main magnetic field strength B0 is investigated. A simplified spherical phantom of human head size is used. In the center of the sphere, the UISNR grows more than quadratically. Within the volume, in which the distance to the center is smaller than 85% of the sphere's radius, the UISNR increases superlinearly. At the surface, the UISNR grows only sublinearly. The SNR of curl-free current patterns grows more than cubically in the center, whereas the SNR of divergence-free current patterns increases quadratically. However, this does not imply, that curl-free modes result in higher SNR than divergence-free modes.
AB - In this study, the increase of the ultimate intrinsic signal-to-noise ratio (UISNR) with regard to main magnetic field strength B0 is investigated. A simplified spherical phantom of human head size is used. In the center of the sphere, the UISNR grows more than quadratically. Within the volume, in which the distance to the center is smaller than 85% of the sphere's radius, the UISNR increases superlinearly. At the surface, the UISNR grows only sublinearly. The SNR of curl-free current patterns grows more than cubically in the center, whereas the SNR of divergence-free current patterns increases quadratically. However, this does not imply, that curl-free modes result in higher SNR than divergence-free modes.
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U2 - 10.1109/ICEAA.2017.8065339
DO - 10.1109/ICEAA.2017.8065339
M3 - Conference contribution
AN - SCOPUS:85035090694
T3 - Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017
SP - 684
EP - 687
BT - Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017
Y2 - 11 September 2017 through 15 September 2017
ER -