CT Virtual Colonoscopy (CT Colonography) Scans Sydney
CT Virtual Colonoscopy, also known as CT Colonography, is a minimally invasive CT scan that creates 2D and 3D images of the colon to detect polyps, cancers, and structural abnormalities. It is a safe alternative for patients who cannot undergo a traditional colonoscopy. At Advicon Imaging, Medicare-eligible CT Colonography scans are fully bulk-billed.
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Description of CT Virtual Colonoscopy (CT Colonography)
CT Virtual Colonoscopy (CT Colonography) is an advanced imaging technique used to examine the large bowel (colon) for polyps, early cancers, and other abnormalities. Unlike traditional colonoscopy, CT Virtual Colonoscopy does not require sedation or the insertion of a long endoscope through the entire colon, making it a preferred option for many patients.
The procedure begins with bowel preparation, which typically includes dietary restrictions, fasting, and taking a bowel-cleansing laxative. This ensures the colon is clear so that polyps and abnormalities can be seen clearly on the CT images.
During the scan, a small tube is gently inserted into the rectum to introduce air or carbon dioxide gas. This inflates the colon, allowing the CT scanner to capture detailed cross-sectional and 3D images of the bowel. The scan is performed with you lying on your back and again on your stomach or side to ensure full visualisation.
CT Colonography is an excellent option for:
- Patients who cannot tolerate or complete a traditional colonoscopy
- Individuals with incomplete colonoscopy due to obstruction or discomfort
- Screening for bowel cancer in selected patients
- Evaluation of abdominal symptoms when endoscopy is not suitable
The scan is quick, typically lasting 15–20 minutes, and patients can resume normal activities soon afterward. At Advicon Imaging, modern CT scanners are used to reduce radiation while maintaining high-quality imaging.
Frequently Asked Questions
What is CT Virtual Colonoscopy?
It is a CT scan that creates detailed images of the colon using air or gas inflation to detect polyps, cancers, and other abnormalities.
Why has my doctor recommended this?
Reasons may include bowel cancer screening, incomplete colonoscopy, inability to tolerate traditional colonoscopy, or investigation of abdominal symptoms.
Do I need preparation?
Yes. Proper bowel preparation is essential.
- Follow the prescribed diet and fasting instructions.
- Take the bowel-cleansing laxative as directed.
- Bring a list of medications and let us know if you are pregnant, breastfeeding, or have allergies.
What happens during the scan?
A small tube is placed in the rectum, and air or carbon dioxide is gently introduced to expand the colon. CT images are taken with you in different positions to ensure full coverage.
Is the scan painful?
Most patients feel only mild discomfort or fullness. The procedure is generally well tolerated and much less invasive than traditional colonoscopy.
Does the scan use radiation?
Yes, but the dose is low and optimised with modern CT technology.
How long does the scan take?
The scan itself takes 15–20 minutes. Allow up to 1.5–2 hours for the entire visit including preparation.
Will I need sedation?
No. CT Colonography does not require sedation, and you may return to normal activities immediately afterward.
Can I drive afterward?
Yes. You can resume driving and daily activities shortly after the exam.
Is CT Virtual Colonoscopy as accurate as a traditional colonoscopy?
It is highly effective for detecting medium to large polyps and cancers. However, if a polyp is found, a traditional colonoscopy may still be needed for removal.
When will my doctor get the results?
Reports are usually available within 24–48 hours.
Is this scan bulk-billed?
Yes. Medicare-eligible CT Virtual Colonoscopy scans are fully bulk-billed at Advicon Imaging.