Virtual colonoscopy (CT colonoscopy)
What is a virtual colonoscopy (CT colonoscopy)?
A virtual colonoscopy (CT colonoscopy) is an examination that uses X-rays and a computer to create detailed images of the colon (large intestine). It is a less invasive alternative to a conventional colonoscopy.
What is this diagnostic procedure for?
A virtual colonoscopy (CT colonoscopy) is used for:
- Detecting polyps in the colon: Polyps are abnormal growths in the colon that can become cancerous.
- Detecting colon cancer: A virtual colonoscopy (CT colonoscopy) can help detect colon cancer in its early stages, when it is easier to treat.
- Detecting other abnormalities in the colon: such as inflammation, diverticula, or narrowing.
- Colon cancer screening: It is used as a screening test in people with an average risk of developing colon cancer.
Benefits of advanced technology in virtual colonoscopy (CT colonoscopy)
A virtual colonoscopy (CT colonoscopy) uses X-rays and a computer to create 3D images of the colon. Before the scan, the colon needs to be cleansed to ensure that the images are clear.
What does the procedure involve?
A virtual colonoscopy (CT colonoscopy) procedure consists of:
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Preparation:
It is essential to cleanse the colon before the scan. Your doctor will give you specific instructions about the liquid diet you should follow and the laxatives you should take. It is important that you follow these instructions carefully.
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During the procedure:
To perform the procedure, you will be asked to lie on your back on the CT scanner table. Then, a thin tube will be inserted into your rectum. To improve the images of the walls of the colon, they will inflate it with air. While the table moves through the scanner, the necessary images will be taken. The procedure usually lasts between 15 and 30 minutes.
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After the procedure:
You can resume your normal activities immediately after the procedure. The results of the virtual colonoscopy (CT colonoscopy) will be analyzed by a radiologist and sent to your doctor, who will explain the findings and recommend the appropriate treatment, if necessary.
Recommendations for the procedure
- Follow the preparation instructions: It is essential that you follow the preparation instructions to ensure the accuracy of the scan.
- Report allergies: Inform your doctor if you are allergic to any medication or to latex.
- Report pregnancy: You need to inform your doctor before the procedure if you are pregnant or think you might be.
Are there any risks?
A virtual colonoscopy (CT colonoscopy) is generally safe, but there are some risks:
- Abdominal discomfort: You may experience abdominal discomfort or gas after the exam.
- Colon perforation (rare): In very rare cases, the tube used in the examination can perforate the wall of the colon.
- Exposure to radiation: CT uses X-rays, which involves a small amount of exposure to radiation.
To ensure your procedure runs smoothly, we ask that you arrive before the scheduled time. This will allow us to complete the necessary administrative and clinical preparation.
Before the procedure, we will give you the Informed Consent form, a document with important information that you must read and sign.
If your appointment is for an MRI, it is crucial that you inform us about the presence of pacemakers, metallic objects, prostheses (including dental prostheses), tattoos, or drug infusion devices such as insulin pumps.
