|
CAT/CT Scan
What it is:
Computed tomography (CT), originally known as computed axial tomography (CAT or CT scan), is a diagnostic imaging method that is used to create three-dimensional, cross-sectional imasUges of internal parts of the human body. Images are created from the reflection of X-Rays off tissues of varying densities. CT scanning is an improvement over conventional X-Ray imaging because it captures higher-resolution images.
What you need to know:
Because CT scans use X-Rays, the body is exposed to radiation. These radiation doses are very small, but in high enough amounts can potentially damage cells and increase a person's risk for cancer.
Patients that may be unsuited for a CT scan include patients who:
- Are pregnant (fetuses are vulnerable to X-Ray radiation);
- Have an allergy to contrast dye (rare);
- Have unstable vital signs
- Are claustrophobic.
How to prepare:
No solids or liquids should be ingested for 4 hours prior to the examination. In addition, a member of our staff will ask you to complete a detailed patient questionnaire, which inquires about prior metal or shrapnel injury to your eyes and body, and recent surgery within the last six weeks or prior surgery for placement of cardiac pacemakers, cerebral aneurysm clips, cochlear or other metallic implants, implanted electronic devices, or neurostimulaters. If any of these conditions apply to you, you will be required to undergo additional screening protocols to assess if it is safe for you to enter the strong magnetic field of the MRI scanner. In some of these circumstances, you may not be able to have an MRI exam.
|
