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Preoperative diffusion-weighted imaging value of rectal cancer: preoperative T staging and correlations with
Zhi-Hua Lu1, Chun-Hong Hu2, Wei-Xin Qian3
1Medical 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.
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.
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