Wu T, Kendell K R, Felmlee J P, Lewis B D, Ehman R L
Department of Diagnostic Radiology, Mayo Clinic and Foundation, Rochester, Minnesota 55905, USA.
Med Phys. 2000 Jan;27(1):221-4. doi: 10.1118/1.598864.
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.
我们开展这项工作的目的是评估磁共振水质子化学位移温度成像校准系数的可靠性。在六个月的时间里，在几个不同的体模中对校准系数进行了15次测量。发现水质子化学位移与温度变化之间存在高度线性关系。所有研究确定的平均温度校准系数为0.009±0.001 ppm/℃。15项研究中有4项是在同一天使用同一个体模进行的。这4项研究的平均温度校准系数为0.0096±0.0001 ppm/℃。
