Intro to CT scan machine

Intro to CT scan machine

1. CT Scan Machine Syed Mustafa Jamal

2. CT Scan CT stands for Computed Tomography. The word computed suggests that it is being assembled. The Greek word  tomos  means "slice", and the Greek word  graphein  means "write ". Together, the word Computed Tomography is used for images taken as slices, which are then assembled together. The 3D image is made after many 2-dimensional (2D) X-ray images are taken around a single axis of rotation - in other words, many pictures of the same area are taken from many angles and then placed together to produce a 3D image .

3. How do CT Scans work? A CT scanner emits a series of narrow beams through the human body as it moves through an arc, unlike an X-ray machine which sends just one radiation beam. The final picture is far more detailed than an X-ray image . Inside the CT scanner there is an X-ray detector which can see hundreds of different levels of density. It can see tissues inside a solid organ. This data is transmitted to a computer, which builds up a 3D cross-sectional picture of the part of the body and displays it on the screen .

4. How do CT Scans work CT scans work similarly to X-rays. Except they do not use the conventional imaging techniques. A detector is used instead that helps convert the rays into a 3D digital image.

5. CT Working Video

6. X-Ray and CT Scan Image A conventional X-ray image is basically a shadow: You shine a "light" on one side of the body, and a piece of film on the other side registers the silhouette of the bones . In a CT scan machine, the X-ray beam moves all around the patient, scanning from hundreds of different angles. The computer takes all this information and puts together a  3-D image  of the body .

7. CT Scan Advantages Although CT scans are a source of ionizing radiation and can cause cancer . Yet they have a lot of advantages. A CT scanner emits a series of narrow beams through the human body, producing more detail than standard single beam X-rays. CT scanners are able to distinguish tissues inside a solid organ. Contrast dyes are sometimes used to improve the clarity of the image. CT scanning is particularly useful for getting detailed 3D images of certain parts of the body, such as soft tissues, blood vessels, and the brain. A CT scan is able to illustrate organ tear and organ injury quickly and so is often used for accident victims.