AROI-ESTRO GYN Teaching Course

Technical considerations: MRI

• High resolution T2-weighted imaging: mainstay for tumor detection • Oblique axial T2W images : perpendicular to the cervical long axis: Fat-suppressed sequences : evaluation of parametrial involvement. • Complementary sequences : Post contrast T1 weighted , Diffusion weighted imaging • Role of IV contrast : • Detection of small tumors • Improves accuracy of diagnosing bladder and rectal invasion. • Post-treatment : differentiate residual or recurrent tumor from radiation fibrosis. • Delineate complications of treatment, such as fistula