James Tropp1,
Kayvan Keshari2, Mark Van Criekinge
1Global Applied Science Lab, GE
Healthcare Technologies, Fremont, CA, United States; 2Radiology,
University of California San Francisco, San Francisco, CA, United States
We
have calculated the radiation damping constant for protons in neat H2O at
14.1 tesla, and confirmed the accuracy of our prediction by measurement. The
calculation contains no adjustable parameters, and replaces the coil filling
factor and Q with the coil efficiency, i.e. B1 per absorbed power. The
calculated and measured linewidths are, respectively 46.6 Hz and 44.0 Hz.