直肠癌术前扩散加权成像的价值：术前T分期及其与组织学T分期的相关性。
Preoperative diffusion-weighted imaging value of rectal cancer: preoperative T staging and correlations with histological T stage.
作者信息
Lu Zhi-Hua, Hu Chun-Hong, Qian Wei-Xin, Cao Wen-Hong
机构信息
Medical Imaging Center, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China; Department of Radiology, Affiliated Changshu Hospital of Soochow University, 1 Shuyuan Road, Changshu, Jiangsu 215500, China.
Medical Imaging Center, the First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China.
出版信息
Clin Imaging. 2016 May-Jun;40(3):563-8. doi: 10.1016/j.clinimag.2015.12.006. Epub 2015 Dec 18.
PURPOSE
To assess the ability of diffusion-weighted imaging (DWI) for evaluating T stage and correlation with histological T stage of rectal cancer.
METHOD
The diagnostic accuracy, sensitivity, and specificity of T2WI and DWI combined with T2WI for T stage were evaluated. Mean tumor apparent diffusion coefficient (ADC) was compared with histological T stage.
RESULT
There were no significant differences in the diagnostic accuracy, sensitivity, and specificity no matter what kind of T stage was concerned. The difference between ADC values and histological T stage were significantly different.
CONCLUSION
DWI was useful for evaluating T stage of rectal cancer. The ADC may predict the histological grade.
目的
评估扩散加权成像（DWI）对直肠癌T分期的评估能力及其与组织学T分期的相关性。
方法
评估T2WI以及DWI联合T2WI对T分期的诊断准确性、敏感性和特异性。比较肿瘤平均表观扩散系数（ADC）与组织学T分期。
结果
无论涉及何种T分期，诊断准确性、敏感性和特异性均无显著差异。ADC值与组织学T分期之间的差异有统计学意义。
结论
DWI有助于评估直肠癌的T分期。ADC可预测组织学分级。
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