CT scans use X-ray equipment and computer processing to produce two-dimensional images of the body. Your healthcare provider might order this type of imaging to look for tumors, examine lymph nodes or bone abnormalities, or for a variety of other reasons.
The patient lies on a table and passes through a machine that looks like a large, squared-off donut.
If contrast dye is used to improve the computer image, the patient may need to avoid eating or drinking for 4 to 6 hours before the test.
Patients should tell their provider before the test if they have any allergies or kidney problems.
