CT Scan (CAT SCAN)
Computed tomography scans use X-rays to make detailed pictures of structures inside of the body.
During the test, you will lie on a table that is attached to the CT scanner, which is a large doughnut-shaped machine. The CT scanner sends X-rays through the body area being studied. The X-ray tube is located inside the machine and rotates around the body. The image produced is a “slice” of the body part (similar to slicing a loaf of bread but with pictures). Each rotation of the scanner takes less than a second and provides a picture of a thin slice of the organ or area. Multiple slices will be taken to view the entire body part.
Certain exams may require a special dye called contrast. This contrast is an iodine dye that is often used to make structures and organs easier to see on the CT pictures. The dye may be used to check blood flow, find tumors, and look for other problems. The dye can be used in different ways. It may be put in a vein (IV) in your arm, or it may be placed into other parts of your body (such as the rectum or a joint) to see those areas better. For some types of CT scans you drink the dye. CT pictures may be taken before and after the dye is used.
If a patient is allergic to contrast material he/she should tell the doctor beforehand. There are some medications that reduce allergic reactions to contrast materials.
A CT scan can be used to study all parts of your body, such as the chest, belly, pelvis, or an arm or leg. It can take pictures of body organs, such as the liver, pancreas, intestines, kidneys, bladder, adrenal glands, lungs, and heart. It also can study blood vessels, bones, and the spinal cord.
As metal interferes with the images of the CT scan, the patient will need to remove all jewelry and metal fastenings. The patient may need to wear a hospital gown during the study.
Any woman who suspects she may be pregnant should tell her doctor beforehand. . Please be sure to tell the technologist performing your exam of any kidney problems you may have or have had in the past. Please be sure to inform the staff of any prior allergic reactions that you have had to contrast in the past. Blood work and/or steroid preparation may be required prior to contrast being administered.
If your physician has indicated that you need to have a test or a scan at the Diagnostic Medical Imaging Department at Scottsdale Healthcare please call 480-882-4703.
