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CT Scan

By: Zach and Brad
by

Zach Lebovitz

on 5 September 2012

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Transcript of CT Scan

CT Scan
By: Zach and Brad What is a CT Scan? A Computerized Tomography Scan, more commonly known as a CT or CAT Scan, is a medical test that uses a series of x-ray photographs taken at different angles that are combined to project accurate 3D images of the bones and soft tissue in your body.

Doctors mostly use it to diagnose cancers, find tumors, identify internal bleeding, and find out information about the brain as well as common injuries like broken bones. History Of The CT Scan CT was invented by a British engineer named Sir Godfrey Hounsfield and Dr. Alan Cormack. CT scanners first began to be used in 1974. Currently, approximately 6,000 or more scanners are in use in the United States. CT Scan and Photons Radiation and Technology of a CT Scan Risks and Benefits of CT Scans Facts About CT Scans The CT Scan Procedure Triangulation The technology of a CT Scan is much better than the technology of a x-ray because a CT scan uses multiple x-rays (2D) that circle around your body and combine to make an accurate 3D image. This allows you to see all the bones and tissues because some get covered up by bigger bones and tissues in a 2D x-ray A CT scan uses small amounts of radiation that can kill some cells inside of your body, however, it has a small chance of increasing your risk of cancer. In an x-ray exam, a small amount of radiation is aimed at the body. With CT scanning, numerous x-ray beams rotate around you, measuring the amount of radiation being absorbed throughout your body. They are quick and accurate. Do not eat or drink for 4 hours before you arrive for your scan. If you have diabetes, it is recommended to do your CT scan in the morning because BPM's are at their lowest when you first wake up. 1 CT head scan = 30 chest x-rays
1 CT chest scan =119 chest x-rays
1 CT abdomen scan = 234 chest x-rays CT Scans can be done for specific parts of the body like the pancreas, the chest, the back, the stomach, and the head. Who: RSNA (Radiological Society of North America) and ACR (American College of Radiology)
What: Information on CT Scans
When: 2012
Where: Oakbrook, Illinois
Why: To inform people about CT Scans. Check #1: http://www.rsna.org/ Check #2: http://www.acr.org/ Shadow Example A CT Scan uses many x-rays that spiral around you to get a 3D image of the body.

The radiation from a CT Scan comes from the x-rays which are basically supercharged light photons (beams of light) that pass through the tissue in your body and record an image.

A normal photon cannot do this because the increased amounts of energy in an x-ray allows the rays to pass through. Small risk of cancer can be caused due to the exposure of radiation from the CT Scan. Risks:
There is radiation in the form of x-rays that are used in CT Scans, so it does have a tiny chance of increasing the possibilities of getting cancer Benefits:
CT scans are quick and extremely accurate due to the 3D imaging
The images are so precise that the doctor can help you in the best way possible *If you are pregnant you must tell your doctor because CT Scans can possibly hurt the unborn baby through its radiation in which case the doctor will suggest a different procedure Most of the time the benefits of a CT Scan greatly outweigh the risks! Fact: The End Techology Radiation
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