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Computed tomography (CT)
Computed tomography (CT) is an imaging test that uses X-rays to produce cross-sectional images of the body, with far more detail than a conventional X-ray. The images can be reconstructed on several planes and in 3D, allowing the doctor to study organs, bones, blood vessels and soft tissues precisely.
The test is quick and painless: the scan itself usually takes just a few minutes.
What it is used for
- chest and lung imaging (nodules, infections, emphysema);
- assessment of the abdomen and pelvis (liver, pancreas, kidneys, adrenal glands, bowel);
- bones and joints, especially complex fractures and injuries;
- the brain, paranasal sinuses and spine;
- blood vessels (CT angiography);
- staging and follow-up of cancer.
How the test is carried out
You lie on a couch that moves slowly through a ring-shaped opening, where the X-ray tube rotates around the body. During the scan it is important to keep still and, when asked, to hold your breath for a few seconds.
In some cases the doctor prescribes the scan with contrast medium: an iodine-based agent injected into a vein that makes vessels and organs stand out more clearly. During the injection you may feel a warm sensation that passes within moments.
Preparation and precautions
A CT scan without contrast usually needs no preparation. If contrast medium is planned, you will usually need to:
- fast for a few hours beforehand, as instructed;
- bring a recent creatinine blood test to check kidney function;
- tell us about any allergies, especially to medicines or to contrast media used in the past;
- tell us if you take medication for diabetes (such as metformin) or have kidney or thyroid disease.
CT uses ionising radiation: it is performed only on a doctor’s referral, and you must always tell us if you are or might be pregnant. Please bring your referral and any previous scans; detailed instructions are given when you book.
Services
Computed tomography (CT)
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*Waiting times refer to working days and to the first available specialist.
CalatafimiMed is in Palermo and is open from Monday to Saturday. For any further information you can contact the centre here.