Computed Axial Tomography To Analyze The Internal Structures Of The Body
A computerized axial tomography scan is a diagnostic procedure that combines many x-ray images to generate cross-sectional views and, if required, three-dimensional images of the internal organs and structures of the body. This imaging technique is also called CT scan or CAT scan. This technique is used to gather information about the normal and abnormal structures in the body. Computed axial tomography is used to accurately guide the placement of instruments or treatments within the body.
Computed axial tomography is performed to analyze the internal structures of various parts of the body. This includes the head, where traumatic injuries, tumors, and infections can be identified. In the spine, the anatomy of the intervertebral discs and spinal cord and the bony structure of the vertebrae can be accurately defined. This is an effective technique to measure the density of bone.
During the procedure, a large donut-shaped x-ray machine captures x-ray images at many different angles around the body. The CAT scan machine is controlled by the computer to assure accuracy in placement of the x-ray beam.The CAT scan image reveals a crosssection of the body or body part. The image recorded is termed as a tomogram. The recorded tomogram "sections" at different levels of the body are further combined to form a three-dimensional image of an organ or an abnormal body structure.
At times, a contrast material is used to enhance visualization. This painless technique provides accurate images of body structures. During certain medical procedures such as biopsies of suspected cancers, removal of internal body fluids for various tests, and the draining of abscesses which are deep in the body, Computed axial tomography is used to guide the radiologists.