The application value of MRI in the assessment of diagnosis and staging of uterine cervical carcinoma

Objective:To discuss the value of MRI in the assessment of the value of diagnosis and staging of cervical carcinoma.Methods:Pelvic MRI were performed in 128 patients with cervical carcinoma,including 119 cases of squamous cell cancer,8 cases of adenocancer and 1 cases squamous-adenocancer.The MRI scanning included axial SE T_1WI,axial,sagittal and coronal FSE T_2WI,axial,sagittal and coronal FRFSE SE T_2WI,and axial,sagittal and coronal enhanced Gd-DTPA FSPGR/70 T_IWI.MR images were analyzed for the location and extension of cervical cancer.For 49 of the 128 cases treated by operation,MR staging were compared with surgical-pathologic staging.Results:MR findings of cervical cancer were charactered with a little hyperintense on T_2WI,moderate intense or hypointense on T_1WI,and different degree of enhanced by bolus intravenous Gd-DTPA T_1WI.There was a significant contrast signal ratioes among the cervical carcinoma,normal cervix,and the parametrial fat tissue.The accuracy,specificity,and sensitivity for parametrial extension were 87%,89% and 85%,respectively.The accuracy of MR imaging in staging Ⅰ～Ⅱa and total staging of cervical cancer were 92% and 86%.Conclusion:MR imaging can show the local tumors and extension of the cervical cancer clearly on multiple planes and angles.It is superior to any other methods in the staging of uterine cervical carcinoma,and should be regarded as a preferred method.