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

表2 后扣带回皮层区域不同门控条件下的表观扩散系数对比及线性混合效应模型分析结果

Table 2 Comparison of apparent diffusion coefficient (ADC) obtained under different gating conditions and results of linear mixed-effects model results analysis in the posterior cingulate cortex

ADC/(μm2/ms) P12 P13 P23 Cardiac gating Respiratory gating No gating tCho LR 0.106 ± 0.024 0.112 ± 0.020 0.111 ± 0.023 0.674 0.721 0.949 AP 0.097 ± 0.027 0.099 ± 0.011 0.108 ± 0.018 0.876 0.346 0.428 HF 0.092 ± 0.019 0.111 ± 0.023 0.111 ± 0.021 0.003** 0.003** 0.955 mean 0.098 ± 0.019 0.107 ± 0.014 0.110 ± 0.014 0.303 0.178 0.734 tCr LR 0.130 ± 0.017 0.151 ± 0.015 0.139 ± 0.015 0.034* 0.364 0.185 AP 0.114 ± 0.015 0.129 ± 0.013 0.131 ± 0.013 0.041* 0.022* 0.747 HF 0.105 ± 0.009 0.119 ± 0.014 0.127 ± 0.015 0.055 0.004** 0.215 mean 0.116 ± 0.008 0.133 ± 0.012 0.132 ± 0.014 0.019* 0.023* 0.928 tNAA LR 0.144 ± 0.030 0.148 ± 0.009 0.142 ± 0.012 0.750 0.826 0.592 AP 0.120 ± 0.016 0.125 ± 0.008 0.128 ± 0.006 0.431 0.205 0.614 HF 0.113 ± 0.013 0.124 ± 0.016 0.130 ± 0.017 0.219 0.073 0.529 mean 0.126 ± 0.018 0.132 ± 0.008 0.133 ± 0.009 0.368 0.303 0.893