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Abstract #2165

Mapping of relative temperature changes through quadrupolar transverse H217O relaxivity in phantom and validated in rat at 7T and 16T UHF

Hannes M. Wiesner1, Tao Wang1, Xin Li1, Wei Zhu1, Kelsey Haney1, Xiao-Hong Zhu1, and Wei Chen1
1CMRR, Department of Radiology, University of Minnesota, Minneapolis, MN, United States

Synopsis

Keywords: Quantitative Imaging, Thermometry

In this study we evaluate the application of linewidth thermometry using the transverse relaxation of natural abundance 17O on leading human and preclinical high-field MRI platforms. It could be beneficial as a simple and fast alternative approach compared to the phase method to assess temperature. We validated it in post-mortem rodents after preparations on phantoms. Furthermore, due to the lower operating frequency some high-field challenges could be ameliorated with the right choice of volume to signal acquisition ratio.

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Keywords