A CT scan, or computed tomography scan, is a type of imaging test that uses X-rays and a computer to create detailed images of the inside of the body. It is also known as a CAT scan, which stands for computed axial tomography. A CT scan with contrast is a type of CT scan that uses a contrast material, such as iodine or barium, to help highlight certain areas of the body.
Preparing for a CT Scan
Before having a CT scan, you should discuss any medications you are taking with your doctor. You may need to stop taking certain medications before the test. You may also need to fast for a few hours before the test. Depending on the type of CT scan you are having, you may need to drink a contrast material or have an injection of contrast material.
What Happens During the Test?
During the test, you will lie on a table that slides into the CT scanner. The scanner will take X-ray images from different angles. You may be asked to hold your breath for a few seconds while the images are taken. The test usually takes 10-30 minutes.
How Long Does it Take to Get Results?
The results of a CT scan are usually available within 24 hours. Your doctor will discuss the results with you and explain what they mean.
What Does a CT Scan Show?
A CT scan can show a variety of things, including tumors, blood clots, bone fractures, and other abnormalities. It can also be used to guide a biopsy needle to a specific area.
Are CT Scans Safe?
CT scans are generally safe, but they do involve exposure to radiation. The amount of radiation used is small, but it can increase your risk of cancer. Your doctor will discuss the risks and benefits of the test with you before the test.
Can I Have a CT Scan if I’m Pregnant?
If you are pregnant, you should discuss the risks and benefits of having a CT scan with your doctor. In some cases, a CT scan may be necessary, but in other cases, an ultrasound or MRI may be a better option.
References
- Mayo Clinic. (2020). Computed tomography (CT) scan. Retrieved from https://www.mayoclinic.org/tests-procedures/ct-scan/about/pac-20384902
- American College of Radiology. (2020). CT scans. Retrieved from https://www.acr.org/Patients/Why-Choose-Radiation-Therapy/CT-Scans
- U.S. National Library of Medicine. (2020). CT scan. Retrieved from https://medlineplus.gov/ctscan.html
Keywords: CT scan, CAT scan, contrast material, X-rays, imaging test, radiation, pregnancy, MRI, ultrasound.