General instructions for Head CT scan (with and without contrast)
X-ray test (CT or scanner) to obtain detailed images of the brain and skull bones.
- Fasting: Without contrast, no fasting is required. With contrast, fast from solid food for 4 to 6 hours. You may drink water up to 2 hours before.
- Medication: Continue your usual medication. If you take metformin for diabetes, ask whether you should stop it if contrast is used.
- Clothing and Accessories: Wear comfortable clothing. Strict restriction of metal on the head and neck (earrings, necklaces, piercings, glasses, hearing aids, hairpins and dentures).
- Specific Requirements: Tell the staff if you have asthma, kidney problems or allergies to iodinated contrast media. It is crucial to keep your head completely still. You must tell the staff if you are pregnant.
- Discomfort or pain after the test: A very quick and painless procedure. If intravenous contrast is used, it is normal to feel a passing warmth in the body and a metallic taste in the mouth.
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