CT (CAT) Scan
Computed Tomography, also called CAT scan, uses special x-ray equipment and powerful computers to provide physicians with highly detailed, cross-sectional images of any part of the body. CT imaging can show several types of tissue—lung, bone, soft tissue, and blood vessels—with great clarity. Using CT scans of the body; radiologists can more easily diagnose cancers, cardiovascular disease, infectious disease, trauma, and musculoskeletal disorders.
In computed tomography, the x-ray beam moves in a circle around the body. This allows many different views of the same organ or structure, and provides much greater detail.
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Cardiac CT Angiography
CT (computed tomography) angiography (CTA) is an examination that uses x-rays to visualize blood flow in arterial and venous vessels throughout the body, from arteries serving the brain to those bringing blood to the lungs, kidneys, and arms and legs. CT combines the use of x-rays with computerized analysis of the images.
Beams of x-rays are passed from a rotating device through the area of interest in the patient's body from several different angles to create cross-sectional images, which then are assembled by computer into a three-dimensional picture of the area being studied. Compared to catheter angiography, which involves placing a sizable catheter and injecting contrast material into a large artery or vein, CTA is a much less invasive and more patient-friendly procedure
CTA is commonly used to examine the pulmonary arteries in the lungs, visualize blood flow in the renal arteries, identify aneurysms in the aorta or in other major blood vessels, and detect thrombosis (clots) in veins.