Preoperative diffusion-weighted imaging value of rectal cancer: preoperative T staging and correlations with histological T stage

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• 作者：Zhi-hua Lu^a ; ^b ; Chun-hong Hu^a ; ^{hch_sz5305@163.com" class="auth_mail" title="E-mail the corresponding author} ; Wei-xin Qian^b ; Wen-hong Cao^b
• 关键词：Rectal cancer ; Magnetic resonance image ; Diffusion-weighted imaging ; T stage ; Prognosis
• 刊名：Clinical Imaging
• 出版年：2016
• 出版时间：May-June 2016
• 年：2016
• 卷：40
• 期：3
• 页码：563-568
• 全文大小：656 K

文摘

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.