Premium
First in‐vivo human imaging at 10.5T: Imaging the body at 447 MHz
Author(s) -
He Xiaoxuan,
Ertürk M. Arcan,
Grant Andrea,
Wu Xiaoping,
Lagore Russell L.,
DelaBarre Lance,
Eryaman Yiğitcan,
Adriany Gregor,
Auerbach Eddie J.,
Moortele PierreFrançois,
Uğurbil Kâmil,
Metzger Gregory J.
Publication year - 2020
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/mrm.28131
Subject(s) - torso , radio frequency , computer science , image quality , scanner , biomedical engineering , medicine , artificial intelligence , telecommunications , image (mathematics) , anatomy
Purpose To investigate the feasibility of imaging the human torso and to evaluate the performance of several radiofrequency (RF) management strategies at 10.5T. Methods Healthy volunteers were imaged on a 10.5T whole‐body scanner in multiple target anatomies, including the prostate, hip, kidney, liver, and heart. Phase‐only shimming and spoke pulses were used to demonstrate their performance in managing the B 1 + inhomogeneity present at 447 MHz. Imaging protocols included both qualitative and quantitative acquisitions to show the feasibility of imaging with different contrasts. Results High‐quality images were acquired and demonstrated excellent overall contrast and signal‐to‐noise ratio. The experimental results matched well with predictions and suggested good translational capabilities of the RF management strategies previously developed at 7T. Phase‐only shimming provided increased efficiency, but showed pronounced limitations in homogeneity, demonstrating the need for the increased degrees of freedom made possible through single‐ and multispoke RF pulse design. Conclusion The first in‐vivo human imaging was successfully performed at 10.5T using previously developed RF management strategies. Further improvement in RF coils, transmit chain, and full integration of parallel transmit functionality are needed to fully realize the benefits of 10.5T.