摘要
目的:探讨3.0T MRI在直肠癌T分期及术前评估中的应用价值。方法:术前经结肠镜活检证实的直肠癌病人32例,行盆腔磁共振扫描,对直肠癌进行影像T分期及术前评估,结果与术后病理对照。结果:32例直肠癌T分期总的准确性单纯平扫为:81.25%(26/32),平扫结合增强为:93.75%(30/32)。32例中28例影像判断筋膜受累阴性者均与术后病理相符,4例影像判断受累阳性,其中2例MR高估。MR矢状位能清晰显示所有病例的肛缘距肿瘤下缘的曲线距离。结论:3.0T MR能较准确地对直肠癌进行术前T分期及评估。
Objective： To study the value of 3.0 T MRI for the Preoperative T Staging and Ewduation of Rectum Cancer. Methods ：Thirty-two cases biopsy-proven rectal cancer underwent MR examination before surgery. Preoperative MRI T staging of rectal cancer and postoperative histopathologic T staging were compared. The accuracy of the MRI T staging were eaculated. The involvement of mesorectal fascia and the curve distance between the lesion and the analmargin were observed and compared with that of operation and pathology. Results： （ 1 ） Accuracy of rectal cancer T staging of non-enhanced and enhanced MR imaging in all 32 cases reached 81.25% and 93.75%. （2） In evaluating the involvement of mesorectal fascia, two patients were overstepped by MRI. The curve distance between lesions and analmargins could be measured accurately on sagittal section of MR images in all cases. Conclusion： Combination of non-enhanced and enhanced MR imaging can provide accurate rectal cancer T staging. 3.0T MR has significant values in evaluating the feasibility of TME （total mesorectal excision）in the patients with rectal cancer.
出处
《内蒙古医学院学报》
2012年第6期486-490,共5页
Acta Academiae Medicinae Neimongol
基金
内蒙古自然科学基金(2010040)
关键词
直肠癌
T分期
术前评估
磁共振成像
rectal cancer
T staging
preoperative-Evaluation
magnetic resonance imaging
