Objective To explore the value of DWI combined with dynamic enhancement in judging the degree of muscular invasion of rectal cancer.Methods The MR images of 44 patients with rectal cancer confirmed by pathology were retrospectively analyzed,and the difference of ADC values between the group without muscular breakthrough and the group with muscular breakthrough was compared,and the accuracy of DWI combined with dynamic enhancement in diagnosing muscular breakthrough was calculated.Results There were significant differences in ADC between the non-breakthrough group and the breakthrough group(P＜0.01);When the ADC value was 1.08×10-3mm2/s as the threshold value,the sensitivity and specificity for differentiating muscular breakthrough of rectal cancer were 82.76％and 73.33％,respectively;The accuracy of combining two imaging methods with T2WI in diagnosing rectal cancer with muscular breakthrough is 88.6％,and the consistency with pathological results was 0.851.Conclusion:DWI combined with dynamic contrast enhancement has a good clinical value in judging the degree of muscular invasion of rectal cancer.
关键词
磁共振成像/直肠癌/扩散加权成像/动态增强
Key words
Magnetic Resonance Imaging/Rectal Cancer/Diffusion-weighted imaging/Dynamic Contrast Enhanced
维普
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