CT

Computed Tomography combines the use of X-rays with advanced computer technology to ensure the most accurate diagnosis possible. Our centers utilize the exclusive Toshiba Asteion multi-slice CT system to create cross-sectional images of the body using a series of X-ray beams. The beams spiral around the body computing multiple slices that are constructed into a complete image by a computer. The system offers more detail than traditional X-rays, making it useful when there is a need to evaluate the size, shape and position of soft tissue structures. Most often, CT procedures are recommended to identify tumors and cysts, and help diagnose diseases of the liver, lungs, coronary arteries and other internal organs.

This service is available at the following locations:

Imaging Center
of Southern Illinois

Imaging Center
of Alton

Patient before CT

The total time for a CT scan may vary. On exam day, patients will be asked to wear a gown to prevent clothing obstructing the x-rays. Most doctors also advise their patients to fast four to six hours prior to the exam. When the exam begins, the table will move to a starting position, pause and then move to the final scanning position. On the table, you will be surrounded by a donut-shaped "gantry," which houses the X-ray tube that generates invisible X-ray beams. During scanning, patients will be required to lie very still and hold their breath for just a few seconds.

Occasionally, CT exams will require contrast media, or dyes, to enhance the visualization of some tissues. If needed, the dye is injected into a vein. The dyes used are iodine-based, and virtually harmless. However, iodine can trigger allergic reactions in some patients, so those allergic to iodine should notify their physician prior to a CT exam.

Click here to view prepartions for this test.