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Technical considerations: MRI
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High resolution T2-weighted imaging: mainstay for
tumor detection
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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 :
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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