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CT SCAN
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WHAT TO EXPECT
A CT scan (Computed Tomography) uses X-rays to create highly detailed cross-sectional images of the body. The scanner moves around you to capture images from multiple angles, helping doctors assess organs, bones, and blood vessels with precision.
Sometimes, a contrast agent may be used during your CT scan.
Contrast is a special medical dye that helps highlight certain organs, tissues, and blood vessels more clearly on the images. This allows the radiologist to detect issues that may not be visible on standard images.
Contrast may be:
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Swallowed (oral contrast) – often used for scans of the stomach or bowel
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Injected into a vein (IV contrast) – used to improve visibility of organs and blood vessels
If contrast is used, you may notice:
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A brief warm or flushing sensation
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A metallic taste in your mouth
These sensations are normal and usually pass within seconds.
HOW TO PREPARE
Preparation depends on the type of CT scan you are having.
You may be asked to:
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Avoid eating or drinking for a few hours before your scan
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Remove jewellery, glasses, or metal objects
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Wear comfortable clothing without metal fastenings
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Inform staff if you are pregnant or may be pregnant
If contrast is required, you may also be asked to:
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Fast for a short period beforehand
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Inform us if you have asthma, kidney problems, or previous reactions to contrast
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Tell us about any medications you are taking
You will always be informed in advance if contrast is needed, and our team will explain everything clearly before your scan.
DURING YOUR SCAN
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You will lie on a padded table that moves through the scanner
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The scanner is open and does not touch you
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The scan is painless and usually takes only a few minutes
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You will be guided throughout the process by our team
AFTER THE SCAN
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You can usually return to normal activities straight away
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Drink plenty of fluids if contrast was used
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A radiologist will review your images and send a report to your doctor