Synthetic phase-sensitive inversion-recovery imaging for assessing extramural venous invasion in patients with rectal cancer

This study aimed to investigate the feasibility of synthetic phase-sensitive inversion recovery (SyPSIR) vessel for extramural venous invasion (EMVI) detection in patients with rectal cancer. One hundred and six histologically confirmed rectal cancer patients (35 EMVI+ and 71 EMVI−) were evaluated. Compared with using T2WI alone, the area under the receiver operating characteristic curve using the combination of T2WI and SyPSIR was increased from 0.86 to 0.96 and from 0.65 to 0.88 for the senior and junior radiologist, respectively. Therefore, SyPSIR can provide additional information to improve EMVI diagnostic efficiency of in rectal cancer.