基于多弛豫信号补偿的快速磁共振T1ρ散布成像

刘元元,杨育昕,朱庆永,崔卓须,程静,刘聪聪,梁栋,朱燕杰

Accelerating T1ρ Dispersion Imaging with Multiple Relaxation Signal Compensation

Yuan-yuan LIU,Yu-xin YANG,Qing-yong ZHU,Zhuo-xu CUI,Jing CHENG,Cong-cong LIU,Dong LIANG,Yan-jie ZHU

表1 各加速倍数下，各方法重建的所有自旋锁定频率下T1ρ加权图像的nRMSE、PSNR及SSIM的均值±标准差对比

Table 1 Comparison of the mean±standard deviation values of nRMSE, PSNR and SSIM of the reconstructed T1ρ-weighted images under all spin-lock frequencies using each method at each acceleration factor

R=4 R=5 R=6 R=7 nRMSE L+S 0.0538±0.0144 0.0675±0.0187 0.0835±0.0234 0.1010±0.0232 BCS 0.0439±0.0180 0.0466±0.0117 0.0562±0.0161 0.0630±0.0166 T1ρ-DISC 0.0349±0.0115 0.0383±0.0147 0.0439±0.0169 0.0483±0.0187 PSNR L+S 17.1353±0.2069 17.0752±0.2686 16.7938±0.3227 16.5361±0.3010 BCS 17.3670±0.2014 17.4463±0.2431 17.4215±0.2504 17.3205±0.2271 T1ρ-DISC 17.5279±0.1981 17.6060±0.2079 17.5362±0.2544 17.4039±0.2585 SSIM L+S 0.6785±0.0193 0.6408±0.0229 0.6033±0.0261 0.5757±0.0217 BCS 0.6800±0.0529 0.6727±0.0184 0.6481±0.0219 0.6360±0.0210 T1ρ-DISC 0.7148±0.0179 0.7035±0.0223 0.6916±0.0255 0.6853±0.0268