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CT Scan without Contrast

Posted: Tue Sep 12, 2017 8:50 pm
by Kay1982
Hello lovely people. Does anyone know if anything would show on an abdominal CT scan without contrast if something was going on with my colon? Please if you know I would love to hear. Thank you.

Re: CT Scan without Contrast

Posted: Tue Sep 12, 2017 10:35 pm
by menreeq
Contrast can be administered multiple ways, most commonly intravenously (IV) or orally (PO). Less common methods include per rectum, in joints, into the spinal canal.

CT in general is not the best way to evaluate colon or rectal cancer, which is why screening/diagnosis is done with colonoscopy. CT can be useful for other gastrointestinal pathologies, like diverticulosis/itis or obstruction.

The CT protocol that has the best chance to evaluate colon or rectal cancer is one WITH intravenous AND oral contrast. However, cancer can still be occult on CT even with IV and PO contrast.

This is general information and does not constitute medical advice. Please discuss your options with your doctor.