期刊
MEDICAL PHYSICS
卷 27, 期 1, 页码 221-224出版社
AMER INST PHYSICS
DOI: 10.1118/1.598864
关键词
magnetic resonance; focused ultrasound; water proton chemical shift; temperature mapping
Our purpose in this work was to assess the reliability of the calibration coefficient for magnetic resonance water proton chemical shift temperature mapping. Over a six month period, the calibration coefficient was measured 15 times in several different phantoms. A highly linear relationship between water proton chemical shift and temperature change was found. The average temperature calibration coefficient determined from all studies was 0.009+/-0.001 ppm/degrees C. Four of the 15 studies were conducted on the same day using the same phantom. The average temperature calibration coefficient of these four studies was 0.0096+/-0.0001 ppm/degrees C. (C) 2000 American Institute of Physics. [S0094-2405(00)03201-6].
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