基于MRI的直肠癌术前评估及应用进展

Preoperative evaluation and application development of rectal cancer based on MRI

准确的直肠癌术前评估是精准治疗的前提,MRI是直肠癌术前诊断与分期的首选影像学方法,其不仅能获得较准确的T、N分期,还可获得如肿瘤侵出肌层的深度、肿瘤肌壁外静脉侵犯及与环周切缘的距离等与预后相关的信息。此外,MR还有望预测新辅助放化疗疗效。本文对MRI直肠癌术前评估指标及MRI技术在直肠癌术前评估中的应用价值等进行综述。

MRI is the first choice for preoperative evaluation of rectal cancer. It can not only provide high accuracy for T and N stage, but can also apply important factors related to the prognosis, such as extramural depth, extramural venous in- vasion and circumferential resection margin. Moreover, it is also promising for predicting therapeutic effects of neoaduvant chemoradiotherapy. MRI preoperative evaluation indexes and new techniques in rectal cancer were reviewed in this paper.