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Doctor insights on: 3d Virtual Colonoscopy

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What happens during a virtual colonoscopy?

What happens during a virtual colonoscopy?

Virtual: You are in a cat scanner, with air and sometimes contrast pumped into you. Unpleasant and not as accurate as a regular colonoscopy. Also, if something is found, youmwill need a colonoscopy anyway. ...Read more

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Dr. Charles Cattano
2,033 doctors shared insights

Colonoscopy (Definition)

Colonoscopy is the procedure of using a long flexible camera to visualize the entire colon from the inside with the option to take pictures, video, perform biopsies, remove polyps, etc. Generally people are sedated and do ...Read more


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What is virtual colonoscopy? Is is reliable?

What is virtual colonoscopy? Is is reliable?

A special ct scan: Virtual colonoscopy is a ct scan of the colon. Unlike optical colonoscopy, the patient does not receive sedation and no polyps can be removed. However, virtual colonoscopy is an excellent tests for patients who are not physically able to undertake regular colonoscopy. ...Read more

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How exactly does a virtual colonoscopy work?

How exactly does a virtual colonoscopy work?

It is ct of thecolor: Bowel is prepared similar to colonoscopy.A ct is done on the colon. However polyps or cancers less than 1cms can be easily missed. ...Read more

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What can you tell me about a virtual colonoscopy?

What can you tell me about a virtual colonoscopy?

Not covered: by most insurance and Medicare as a screening tool. Not as accurate as a colonoscopy. requires a bowel prep also like a colonoscopy and is only diagnostic that is, can say you have a possible polyp. A colonoscopy can identify the polyps and remove them at the same time. Colonoscopy is still the gold standard in my opinion ...Read more

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Is a virtual colonoscopy more comfortable than a regular colonoscopy?

Same: Especially given Versed/fentynl sedation with regular colonoscopy But with virtual you can't biopsy polyps like you can with regular colonoscopu ...Read more

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Please name the pros/cons of a virtual colonoscopy vs a regular one? Which one would you recommend first or only? Why?

Pros and cons: Virtual colonoscopy pros: "safe"; cons: radiation (it's a ct scan, not covered by insurance, not as accurate, still need bowel prep real colonoscopy pros: therapeutic (if a polyp is found, it can be removed), covered by insurance. Cons: rare complications such as bleeding, perforation. Being a GI doc, I am naturally biased to latter. ...Read more

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I was wondering if a normal colonoscopy is painful and is a virtual colonoscopy as accurate as a normal colonoscopy and can it detect any cancer?

I was wondering if a normal colonoscopy is painful and is a virtual colonoscopy as accurate as a normal colonoscopy and can it detect any cancer?

Not painful: No colonoscopy is a painless procedure(it is done under sedation, so you would not feel anything). Virtual colonoscopy is still not a well established procedure although it does come 90 close to standard colonoscopy in its accuracy and reliability. ...Read more

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What is the difference between a barium enema and a virtual colonoscopy?

What is the difference between a barium enema and a virtual colonoscopy?

CT colonoscopy: is a CT scan with specific technical parameters. There is a bowel prep to clear out the colon, and a tube is placed into the rectum to fill the colon with air. A barium enema uses x-ray/fluoroscopy instead of CT. With a rectal tube, the colon is filled with barium and air, and the patient placed in different positions for viewing. Barium enema has been largely replaced by colonoscopy. ...Read more

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What is the difference between a virtual colonoscopy and a barium enema?

What is the difference between a virtual colonoscopy and a barium enema?

CT colonoscopy: is a CT scan with specific technical parameters. There is a bowel prep to clear out the colon, and a tube is placed into the rectum to fill the colon with air. A barium enema uses x-ray/fluoroscopy instead of CT. With a rectal tube, the colon is filled with barium and air, and the patient placed in different positions for viewing. Barium enema has been largely replaced by colonoscopy. ...Read more

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Must i have contrast injection during virtual colonoscopy? what about drinking barium? can virtual colon be done without one or both of these?

Yes: The virtual colonoscopy can be done without using any contrast material and just using carbon dioxide or room air into the bowel. The procedure is relatively new and constantly changing. ...Read more

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Is a virtual colonoscopy a good choice for a 35 yo healthy female who has a family history of colon cancer?

Perhaps: Virtual colonoscopy can certainly find colon polyps. The problem is that if one is found you would have to have another colon prep and colonoscopy so that the polyp could be biopsied. If you have a strong family history or other risk factors for colon cancer colonoscopy may be the better test. ...Read more

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66 years old. No hx of polyps or positive hematocult. Is cologuard a good idea instead of colonoscopy. Had negative virtual colonoscopy seven years ag?

66 years old. No hx of polyps or positive hematocult. Is cologuard a good idea instead of colonoscopy. Had negative virtual colonoscopy seven years ag?

Colon cancer screen: If you have never had a colonoscopy, you should. It currently is the gold standard for colon cancer screening. Cologuard and virtual colonography both have a substantially higher false negative rate. With medication, colonoscopy these days is very easy, comfortable, and safe, and will give you the highest likelihood of being able to preevent colon cancer. Don't sell yourself short! ...Read more

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Please tell me if an abdominal CT is the same as a virtual colonoscopy?

Please tell me if an abdominal CT is the same as a virtual colonoscopy?

Not the same: An abdominal CT scan will visualize the pattern of the colon and bowel as it is situated in the peritoneal cavity. It does not visualize the content of the colon unless the lesion is so large that it distorts the shape of the bowel. Virtually colonoscopy allows visualization of the interior content of the bowel without actually employing a scope. ...Read more

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Please tell me if an abdominal CT with contrast the same as a virtual colonoscopy?

Please tell me if an abdominal CT with contrast the same as a virtual colonoscopy?

The same region: Is scanned, but the technical parameters are different, so they are not the same examinations. ...Read more

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Is a CT scan dangerous to a 23 year old, (abdominal) virtual colonoscopy? How many standard x-rays equivelant roughly ?

Does have some risks: Ct scans do expose you to a modest dose of radiation which is not harmful if you have good indications for doing this test and there is no better alternative. Virtual colonoscopy is not yet proven to replace standard colonoscopy. Moreover it is recommended only for over 50 years of age. Since you are 23 year old, you have to have a good reason to have virtual colonoscopy instead of regular exams. ...Read more

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What is the risk of bowel perforation from CT colonography "virtual colonoscopy"??

What is the risk of bowel perforation from CT colonography "virtual colonoscopy"??

Not invasive.: A traditional colonoscopy is invasive; the fiber optic camera is passed through the colon, and therein causes the low risk of perforation of the colon. A CT colonography is not invasive; it's just a fancier CT scan, so there's nothing to directly cause a perforation. ...Read more

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I'm 30.Afraid of colorectal cancer due to rectal bleeding+other symptoms.Can PCP order virtual colonoscopy or must I visit gastro? is virtual good?

I'm 30.Afraid of colorectal cancer due to rectal bleeding+other symptoms.Can PCP order virtual colonoscopy or must I visit gastro? is virtual good?

Colonoscopy: Virtual colonoscopy has value but w/the symptoms you mention you need a real one, which will yield more information. Your PCP can refer you to a gastro, which is the type of doc you would be best served by. Peace and good health. ...Read more

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Is a virtual colonoscopy as good as regular one? I have conditions that make sedation a risk, but want to keep an eye on my celiac, bowel inflammation

Is a virtual colonoscopy as good as regular one? I have conditions that make sedation a risk, but want to keep an eye on my celiac, bowel inflammation

They are different: A virtual colonoscopy is really designed to look for polypoid lesions within the colon. To assess your celiac disease, blood tests and possibly a ct enterography (not a virtual one) would be more useful. Ask your doctor about this. ...Read more

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Dr. Michael Puckett
46 doctors shared insights

Virtual Colonoscopy (Definition)

A virtual colonoscopy is a specialized abdominal ct scan. Using special software the abodminal ct images can be read for colon ...Read more