i. What is Computed Tomography

Computed Tomography (CT) scan is a procedure that utilises an X-ray beam to produce multiple projections. The acquired data will be processed by a computer to create multiple cross-sectional images. It enables viewing of the internal structures of different body parts. It is one of the most widely used medical imaging techniques for different body parts. It is used to diagnose infectious diseases, cardiovascular diseases, musculoskeletal disorders, tumours, and cancers.

ii. What should I be aware of prior to and during the CT scan procedure?

Before the procedure

1. Our medical staff will collect your medical history.
2. Please provide us with your previous medical images and reports, for example, CT scans, MRI or ultrasound scans.
3. A 4-hour fasting is required prior to the scan. (Applicable for intravenous contrast agent administration CT scan).
4. You may need to drink the oral contrast to allow a better visualisation (Applicable for abdominal examination).
5. Please remove all metallic objects, such as watches and jewellery.

During the procedure

1. Our radiologist will assist you in adjusting your posture to lay comfortably on the patient table.
2. The table will then gently slide into the machine for screening.
3. Please be patient, remain still, and follow the breathing techniques provided by the radiologist.
4. Certain CT scans require intravenous contrast agent administration.
5. You may experience some weird sensations such as warmth and nausea after the injection. This is a normal reaction and will subside within a few minutes.

After the procedure

1. You can return to your normal diet.

iii. Points to Note before CT scan

1. You are/suspect that you are pregnant.
2. You have ever had allergy to contrast agents.
3. You have asthma, kidney disease, heart disease, high blood pressure, diabetes, thyroid disease.