How does computed tomography work?
The term “computed tomography,” or CT, refers to a computerized x-ray imaging procedure in which a narrow beam of x-rays is aimed at a patient and quickly rotated around the body, producing signals that are processed by the machine's computer to generate cross-sectional images, or “slices.”.
How does CT scan work Slideshare?
- combines special x-ray equipment with sophisticated computers to produce multiple images or pictures of the inside of the body. - These cross-sectional images of the area being studied can then be examined on a computer monitor, printed or transferred to a CD..
How the CT scan is done?
A computerized tomography (CT) scan combines a series of X-ray images taken from different angles around your body and uses computer processing to create cross-sectional images (slices) of the bones, blood vessels and soft tissues inside your body.
CT scan images provide more-detailed information than plain X-rays do..
What are the 2 types of tomography?
There are 2 basic types of tomography: linear and nonlinear.
In both techniques, the tube moves in one direction while the film cassette moves in the opposite direction, with both motions centered around a fulcrum..
What is CT scan PDF?
CT scanning combines special x-ray equipment with sophisticated computers to produce multiple images or pictures of the inside of the body.
These cross-sectional images of the area being studied can then be examined on a computer monitor, printed or transferred to a CD..
What is the principle of computed tomography?
The term “computed tomography,” or CT, refers to a computerized x-ray imaging procedure in which a narrow beam of x-rays is aimed at a patient and quickly rotated around the body, producing signals that are processed by the machine's computer to generate cross-sectional images, or “slices.”.
What is the purpose of a CT scan Slideshare?
Physicians often use the CT examination to: • quickly identify injuries to the lungs, heart and vessels, liver, spleen, kidneys, bowel or other internal organs in cases of trauma. guide biopsies and other procedures such as abscess drainages and minimally invasive tumor treatments..
Why is CT needed?
Diagnose muscle and bone disorders, such as bone tumors and fractures.
Pinpoint the location of a tumor, infection or blood clot.
Guide procedures such as surgery, biopsy and radiation therapy.
Detect and monitor diseases and conditions such as cancer, heart disease, lung nodules and liver masses..
- Computed tomography is commonly referred to as a CT scan.
A CT scan is a diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce images of the inside of the body.
It shows detailed images of any part of the body, including the bones, muscles, fat, organs and blood vessels. - CT scans can be used to identify disease or injury within various regions of the body.
For example, CT has become a useful screening tool for detecting possible tumors or lesions within the abdomen.
A CT scan of the heart may be ordered when various types of heart disease or abnormalities are suspected. - The term “computed tomography,” or CT, refers to a computerized x-ray imaging procedure in which a narrow beam of x-rays is aimed at a patient and quickly rotated around the body, producing signals that are processed by the machine's computer to generate cross-sectional images, or “slices.”
- To acquire a CT image, an object is placed on a table.
An X-ray source (within the gantry of a CT scanner) rotates around the object, and X-rays which pass through the object are detected on the opposite side.
The detections acquired at different angles are sent to the data acquisition system (DAS).
