CT Scanning

A CT or computerised tomography scan is an imaging technique that involves a scanner taking a series of x-rays from different angles and then combining the images using a high powered computer to form accurate and detailed images of the subject matter. It can be used to take detailed pictures of structures within the chest, abdomen or elsewhere. It does involve exposure to radiation and so its use should be restricted to avoid excess exposure to ionising radiation (x-rays). Having said that it is sometimes the best way of obtaining detailed pictures of the abdominal structures. Sometimes radiologists (doctors who specialise in taking images of the body) or radiographers (healthcare experts in obtaining images) may use contrats to obtain clearer pictures. This can be given by mouth or by injection depending on the kind of images required. Images will also vary depending on the timing of imaging in relation to the administration of contrast. Occasionally Ct will not be undertaken because contrast may adversely effect the kidneys, rarely people are allergic to contrast.

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Ct scanning is good at looking at several structures including the liver, spleen, kidneys, blood vessels and bowel, although the timing and administration of contrast needs to be planned properly to obtain good pictures of the relevant organs.