Application of DWI with high b value in staging of cervical cancer at 3.0T MRI / 实用放射学杂志

ABSTRACT

Objective To evaluate the value of 3.0T MRI diffusion-weighted imaging (DWI)in diagnosis and staging of cervical cancer. Methods A total of 65 cervical carcinoma patients were enrolled and performed T2 WI,DWI and LAVA-Flex dynamic contrast-enhancement before operation.MR images were analyzed by two radiologists to evaluate the staging performance.Results All the cervical cancers were detected in DWI,while three lesions were missed in T2 WI and one lesion was missed in LAVA-Flex dynamic contrast-enhanced MRI.Respectively,the accuracy of staging with DWI,T2 WI and LAVA-Flex dynamic contrast-enhanced MRI was 90.8%,78.5%and 87.7%.Accuracy of DWI was significantly higher than that of T2 WI(P =0.04),while there was no significant difference of accuracy between DWI and LAVA-Flex dynamic contrast-enhanced sequence (P =0.39).Conclusion DWI shows relatively higher accuracy than T2 WI in the staging of cervical cancer which makes it an ideal method to replace LAVA-Flex dynamic contrast-enhanced MRI for exact staging.