Results With the increase of diameter and height, the sensitivity, specificity, Youden index and crude agreement of CTVE increased.

结果 随着模拟病变直径、高度的增加，CTVE技术的敏感度、特异度、约登指数和粗一致性均升高。

Objective To investigate the value of CT virtual endoscopy(CTVE) and multiple plane(reconstruction)(MPR)for preoperative staging of rectal cancer.

目的探讨CT仿真内镜（CTVE）和多平面重建（MPR）对直肠癌术前分期的判断。