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What is it?
A computerized tomography (CT) scan produces cross-sectional images (slices) of organs, bones and blood vessels. A CT scan provides far more detailed images than a simple X-ray and can be used to quickly examine people with internal injuries. It is often used to plan medical, surgical or radiation treatments.
How does it work?
This is a noninvasive procedure, allows the doctor to diagnose various diseases or injuries. As you lie on the movable table, you are passed through a ring-shaped scanner. This allows for multiple X-ray images to be taken from different angles around the body, creating detailed cross-sectional images of the area affected by the disease or injury.
What diseases/injuries
Neurological
Respiratory
Musculoskeletal
Orthopedic
Gastrointestinal
Gynecological
Cardiac
Urinary
Oncological
How to prepare
In certain examinations, a contrast material may be required to highlight the relevant areas of your body. This “special dye” blocks X-rays and appears white on images, emphasizing key blood vessels, intestines or other organs. This may be administered through the mouth, by injection or by enema, depending on the type of examination you require.
- Refrain from eating or drinking for a few hours before your scan
- Remove any metal objects (jewelry, glasses, phones etc.) which may interfere with image results
What to expect
During the examination
- You lie on a table that slides through the ring-shaped machine. Straps and pillows may be used to help you stay in position, while you are covered with a blanket to keep you warm
- While the table moves you into the scanner, you may hear buzzing and whirring noises
- A technologist in a separate room will be able to see and hear you. You will be able to communicate with the technologist via a microphone. You may be asked to hold your breath at certain points to avoid image distortion
- The procedure is painless and may only take a few minutes
What to expect
Post examination
- If contrasting agent wasn’t administered, you can resume your daily activities normally
- If contrasting agent was administered, you will be instructed to drink lots of fluids to help the kidneys expel the contrast from your body
- A Radiologist will analyze your images and send a report to your doctor. The next steps will be discussed with your referring Doctor
How to prepare
In certain examinations, a contrast material may be required to highlight the relevant areas of your body. This “special dye” blocks X-rays and appears white on images, emphasizing key blood vessels, intestines or other organs. This may be administered through the mouth, by injection or by enema, depending on the type of examination you require.
- Refrain from eating or drinking for a few hours before your scan
- Remove any metal objects (jewelry, glasses, phones etc.) which may interfere with image results
What to expect
During the examination
- You lie on a table that slides through the ring-shaped machine. Straps and pillows may be used to help you stay in position, while you are covered with a blanket to keep you warm
- While the table moves you into the scanner, you may hear buzzing and whirring noises
- A technologist in a separate room will be able to see and hear you. You will be able to communicate with the technologist via a microphone. You may be asked to hold your breath at certain points to avoid image distortion
- The procedure is painless and may only take a few minutes
What to expect
Post examination
- If contrasting agent wasn’t administered, you can resume your daily activities normally
- If contrasting agent was administered, you will be instructed to drink lots of fluids to help the kidneys expel the contrast from your body
- A Radiologist will analyze your images and send a report to your doctor. The next steps will be discussed with your referring Doctor
What are the risks?
CT Scans are completely safe when operated by the hands of professionals. However, there are minor risks which should be considered:
1.Radiation exposure
The amount of ionizing radiation you are exposed to is greater than that of an X-ray due to the more in-depth information it generates. The doses of radiation used during CT scans however are low and empirically proven to not cause any long-term harm.
2.Harm to unborn babies
Although radiation from a CT scan is unlikely to harm an unborn baby, your doctor may recommend another type of exam, such as ultrasound or MRI, to avoid exposing the fetus to radiation.
3.Reactions to contrast material
In extremely rare occasions, the contrast material has caused medical problems or allergic reactions. This can be avoided however, by filling out the pre-examination questionnaire we provide.
Overall, CT Scans offer many benefits that far outweigh any minor potential risks.
