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Home > Pancreas Education > Detection and Diagnosis > Diagnostic Imaging Studies
Diagnostic Imaging Studies
Computed Tomography (CT, CAT) Scan
How it works: CT is one of the most common imaging studies performed when someone is suspected of having pancreatic cancer. In a CT scan, an X-ray machine linked to a computer takes a series of detailed cross-sectional pictures. These "slices" are then linked together to create a detailed 3-dimensional reconstruction of the body. Unlike regular X-ray images which can only show bone, CT images show soft tissue, blood vessels, and bone.
What to expect: The CT scanner is shaped like a giant donut. The patient lies on a bed that slowly passes through the hole as images are taken. While the pictures are being taken during the study, it is important that the patient remain still in order for the images to be as clear as possible.
Often after the first set of pictures is taken, the patient may be asked to drink contrast dye, or may receive an intravenous (IV) line through which the dye is injected. This dye helps to better outline the body structures, show small pancreatic tumors, and to reveal whether the cancer has spread to any other organs.
Considerations: The contrast dye can cause some people to feel warm, red, and flushed. Some people may be allergic to the contrast dye and may get hives. Other, more serious reactions, such as shortness of breath and low blood pressure, can occur but are very rare. If you have ever had a reaction to contrast material used for X-rays in the past, or if you are allergic to shellfish, make sure to tell your doctor.
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