Finding the right tests…
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Finding the right tests…
MRI
A pelvis MRI with contrast uses gadolinium, injected partway through the scan, to answer a more specific question than the bladder, rectum, prostate, or reproductive organs alone can show on a plain image. For a suspected ovarian or adnexal mass that isn't clearly benign on ultrasound, appropriateness guidance specifically calls for a pelvis MRI with contrast to help tell a benign finding from one that needs further action. It's also used in staging rectal cancer, where gadolinium is given specifically to make cancer cells show up more clearly against surrounding tissue. Because gadolinium is cleared through the kidneys, tell the technologist about any kidney problems before your injection.
This scan checks how the bladder, rectum, prostate, or reproductive organs take up contrast, alongside their size and structure, looking for a mass or spread beyond the organ it started in. Pre- and post-contrast images are compared, which helps characterize a finding and, for rectal cancer, judge how far it extends.
A mass or area of active disease in the pelvis often has a different blood supply than the tissue around it, which is exactly what gadolinium contrast is added to reveal on this version of the scan. This version of the pelvis MRI adds that contrast specifically because a plain image alone doesn't always answer the clinical question.
When an ovarian or adnexal mass isn't clearly benign on ultrasound, appropriateness guidance calls for a pelvis MRI with contrast as part of the workup, since how a mass takes up the dye adds real information toward telling a benign finding from a malignant one. This is different from a routine, low-suspicion mass, which may only need imaging without contrast.
For rectal cancer, gadolinium is given specifically to help cancer cells show up more clearly against the surrounding tissue, which supports judging how deep a tumor has grown and whether it has reached nearby structures. This detail matters directly for planning treatment.
Gadolinium clears through your kidneys over the following hours, and reactions are uncommon and usually mild. Tell the technologist about any kidney problems or past reaction to contrast before your scan, since people with significantly reduced kidney function may need a different approach.
Contrast shows how a mass or area of tissue takes up blood supply, which helps characterize a finding more than a plain image can. Your doctor has asked for this version for a specific reason related to your symptoms or an earlier scan.
Yes, gadolinium is given during this scan specifically to help cancer cells show up more clearly, which supports judging how deep a tumor has grown and whether nearby structures are involved. Your doctor uses this alongside other tests to plan treatment.
Gadolinium is generally considered safe, and reactions are uncommon and usually mild. People with significantly reduced kidney function need extra caution, so tell your doctor and the centre about any kidney problems beforehand.
This page is general information about the test, not medical advice. Your own report's reference ranges apply — please discuss your results with your doctor.
It can add real information toward that question, particularly when ultrasound alone hasn't been clear, but it doesn't give a certain answer on its own. Your doctor interprets this alongside other findings and, often, further testing.
You may feel a brief coolness or pressure at the injection site as the dye goes in. Most people don't notice anything else during the rest of the scan.
There's no universal fasting rule that applies to everyone for this scan. Confirm with your doctor or the centre if they want anything specific from you.
Tell your doctor and the technologist before your appointment if you've reacted to any contrast dye in the past. They can plan accordingly or discuss alternatives with you.