Computed Tomography (CT Scan)
Computed Tomography (CT Scan): Definition, Purpose, Preparation, and Procedure
What is a CT Scan?
A computed tomography (CT) scan uses X-rays and computer technology to provide your physician with very detailed images of your body in cross-sectional views. Your doctor may order a CT scan if he suspects a fracture that doesn't show up on an x-ray, such as on your pelvis or collarbone, a tumor, or if you've had severe injuries to your abdomen, chest, spinal cord or pelvis.
A CT scan is painless. The CT scanner is a cylinder-like tube. You will lie still on a table that slides into the center of the scanner. An X-ray tube will rotate around you and take multiple pictures from different directions. A computer combines these X-rays into clear images on a television monitor. If your doctor needs to see certain areas of your body more clearly, you may need to be injected with a dye or drink a substance to make this possible.
Be sure to inform your doctor of any allergies you have and if you are pregnant before having a CT scan.
Purpose of CT Scans
- Analyze muscle and bone tissue, for example, bone tumors and breaks
- Pinpoint the area of a tumor, disease or blood cluster
- Guide strategies, for example, surgery, biopsy and radiation treatment
- Identify and screen ailments and conditions, for example, growth, coronary illness, lung knobs and liver masses
- Screen the viability of specific medications, for example, growth treatment
- Identify wounds and inner bleeding
- one of the quickest and most precise devices for inspecting the chest, stomach area, and pelvis since it gives itemized, cross-sectional perspectives of a wide range of tissue.
- used to look at patients with wounds from injury, for example, an engine vehicle mishap.
- performed on patients with intense side effects, for example, chest or stomach agony or trouble relaxing.
- regularly the best technique for distinguishing a wide range of malignancies, for example, lymphoma and diseases of the lung, liver, kidney, ovary and pancreas since the picture enables a doctor to affirm the nearness of a tumor, measure its size, recognize its exact area and decide the degree of its association with other close-by tissue.
- an examination that assumes a huge part of the recognition, analysis, and treatment of vascular ailments that can prompt stroke, kidney failure or even problems. CT is regularly used to evaluate for aspiratory embolism (a blood coagulation in the lung vessels) and in addition to aortic aneurysms.
- priceless in diagnosing and treating spinal issues and wounds to the hands, feet and other skeletal structures since it can obviously indicate even little bones and additionally encompassing tissues, for example, muscle and veins.
How To Prepare for CT Scans
CT Scan Procedure
- In an ordinary x-ray exam, a little measure of radiation is gone for and goes through the piece of the body being analyzed, recording a picture on an exceptional electronic picture recording plate. Bones seem white on the x-ray; delicate tissue, for example, organs like the heart or liver, appears in shades of dim, and air seems dark.
- With CT scanning, various x-ray pillars and an arrangement of electronic x-ray identifiers turn around you, measuring the measure of radiation being assimilated all through your body. Now and then, the examination table will move amid the scan, with the goal that the x-ray shaft takes after a winding way. An exceptional PC program forms this vast volume of information to make two-dimensional cross-sectional pictures of your body, which are then shown on a screen. CT imaging is here and there contrasted with investigating a piece of bread by cutting the roll into thin cuts. At the point when the picture cuts are reassembled by PC programming, the outcome is an exceptionally definite multidimensional perspective of the body's inside.