扩散加权磁共振波谱采集策略优化：门控及循环模式影响

文玉林, 李改英, 武玉朋, 李建奇

Optimization of DW-MRS Acquisition Protocol: The Impact of Gating and Cycling Modes

WEN Yulin, LI Gaiying, WU Yupeng, LI Jianqi

图4 一名受试者采用不同门控方式采集得到的每个暂态波谱的水峰信号强度变化情况. (a)感兴趣容积定位于辐射冠区域; (b)感兴趣容积定位于后扣带回皮层区域. b0表示不施加扩散梯度时的信号，b1-LR、b1-AP以及b1-HF表示扩散梯度分别施加在受试者左右、前后和头脚方向时的信号. 蓝色、橙色和黄色分别表示使用心电门控、呼吸门控和无门控

Fig. 4 Variations in signal intensity of the water peak in each transient spectrum acquired using different gating methods for a subject. (a) The volume of interest is located in the corona radiata region; (b) The volume of interest is located in the posterior cingulate cortex region. b0 represents the signal without diffusion gradient application, while b1-LR, b1-AP, and b1-HF denote the signals with the diffusion gradient applied in the left-right, anterior-posterior, and head-foot directions, respectively. Blue, orange, and yellow indicate the use of ECG gating, respiratory gating, and no gating, respectively