Virtual Colonoscopy

Medically reviewed by Drugs.com. Last updated on Jun 30, 2025.

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A virtual colonoscopy is a type of x-ray test to examine the inside of your colon (large intestine). Healthcare providers use a CT scan or MRI to take pictures of your colon from outside your body. This procedure may be used to check for polyps (growths) or cancer. The size of a polyp may also be monitored. You may need this procedure to check if colorectal cancer has come back after you had treatment. A virtual colonoscopy may be used if you are not able to have a regular colonoscopy.

DISCHARGE INSTRUCTIONS:

Seek care immediately if:

• Your abdomen becomes tender and hard.
• You have sudden trouble breathing.
• You are dizzy or weak.
• You have severe pain anywhere in your abdomen.
• Your vomit has blood in it.
• You develop a rash or hives.

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Call your doctor if:

• You feel full, bloated, or are not able to have a bowel movement.
• Your bowel movements are black or have blood in them, or you are bleeding from your anus.
• You have a fever within 24 hours of your procedure.
• You have nausea or are vomiting.
• You have problems having a bowel movement or urinating.
• You have questions or concerns about your condition or care.

Help prevent constipation:

• Eat a variety of healthy foods. Healthy foods include fruit, vegetables, whole-grain breads, low-fat dairy products, beans, lean meat, and fish. Ask if you need to be on a special diet. Your healthcare provider may recommend that you eat high-fiber foods such as cooked beans. Fiber helps you have regular bowel movements.
• Drink liquids as directed. Adults should drink between 9 and 13 eight-ounce cups of liquid every day. Ask what amount is best for you. For most people, good liquids to drink are water, juice, and milk.
• Exercise as directed. Talk to your healthcare provider about the best exercise plan for you. Exercise can help prevent constipation, decrease your blood pressure and improve your health.

Follow up with your doctor as directed:

Write down your questions so you remember to ask them during your visits.

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