Optimal Strategy for Measuring Intraventricular Temperature Using Acceleration Motion Compensation Diffusion-Weighted Imaging
Optimal Strategy for Measuring Intraventricular Temperature Using Acceleration Motion Compensation Diffusion-Weighted Imaging
复制标题
使用加速运动补偿扩散加权成像测量室内温度的最佳策略
DOI：
10.1007/s12194-020-00560-9
复制
发表时间：
2020
影响因子：
1.6
通讯作者：
Yutaka Imai
中科院分区：
文献类型：
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作者：
Shuhei Shibukawa;Tetsu Niwa;Naoki Ohno;Tosiaki Miyati;Isao Muro;Tetsuo Ogino;Mitsunori Matsumae;Yutaka Imai
DWI 测温受脑脊液脉动的影响。为了更准确地测定脑室内温度，我们比较了传统DWI（c-DWI）、加速运动补偿DWI（aMC-DWI）和运动补偿DWI（MC-DWI）在使用两种不同b值（常用b值[1000 s/mm2]和理论上根据脑脊液扩散系数优化的b值[400 s/mm2]）时的情况。使用 3.0-T 磁共振 (MR) 系统对八名健康志愿者进行了扫描。温度图是使用 DWI 的扩散系数创建的，b 分别为 1000 和 400 s/mm2。使用弗里德曼检验对三种技术之间的脑脊液搏动较少的侧脑室 (LV) 和脑脊液搏动较多的第三脑室 (TV) 的室内温度进行了比较。我们测量了腋窝的体温，并将其与室内温度进行比较。当b= 1000s/mm2时，c-DWI的TV脑室内温度（43.12±2.86℃）显着高于aMC-DWI的脑室内温度（37.68±1.66℃；P< 0.05），而LV的室内温度没有显着差异（P= 0.093）。当b= 400s/mm2时，c-DWI的TV脑室温度（75.07±5.48℃）显着高于aMC-DWI的脑室内温度（38.63±0.92℃；P< 0.05），而LV则无显着性差异（P= 0.093）。在任何一种情况下，aMC-DWI 提供的心室内温度都接近或略高于体温。然而，c-DWI 和 MC-DWI 测量的温度高于体温，尤其是在电视中。因此，aMC-DWI可以准确测定心室内温度。
DWI thermometry is affected by CSF pulsation. To achieve more accurate determination of intraventricular temperature, we compared conventional DWI (c-DWI), acceleration motion compensation DWI (aMC-DWI), and motion compensation DWI (MC-DWI) when using two differentbvalues (commonly usedbvalue [1000 s/mm2] and theoretically optimizedbvalue according to the diffusion coefficient of the CSF [400 s/mm2]). Eight healthy volunteers were scanned using a 3.0-T magnetic resonance (MR) system. The temperature map was created using the diffusion coefficient from DWI withb= 1000 and 400 s/mm2, respectively. The intraventricular temperatures in the lateral ventricles (LV) with less CSF pulsation, and the third ventricle (TV), which has more CSF pulsation, were compared between three techniques using the Friedman test. We measured the body temperature in the axilla to compare it with the intraventricular temperature. Withb= 1000 s/mm2, the intraventricular temperatures in TV for c-DWI were significantly higher (43.12 ± 2.86 °C) than those for the aMC-DWI (37.68 ± 1.66 °C;P< 0.05), whereas those in LV were not significantly different (P= 0.093). Withb= 400 s/mm2, the intraventricular temperatures in TV for c-DWI (75.07 ± 5.48 °C) were significantly higher than those for the aMC-DWI (38.63 ± 0.92 °C;P< 0.05), whereas those in LV were not significantly different (P= 0.093). aMC-DWI provided an intraventricular temperature that was close to or slightly higher than the body temperature in either condition. However, c-DWI- and MC-DWI-measured temperatures were higher than the body temperature, particularly in the TV. Thus, aMC-DWI can accurately determine the intraventricular temperature.