What does CT artifacts mean?
In computed tomography (CT), the term artifact is applied to any systematic discrepancy between the CT numbers in the reconstructed image and the true attenuation coefficients of the object.
What is CT interpolation?
Interpolation. Interpolation is a mathematical process used to smooth, enlarge or average images that are being displayed with more pixels than that for which they were originally reconstructed.
What is computed tomography Radiopaedia?
Computed tomography (CT), also known as, especially in the older literature and textbooks, computerized axial tomography (CAT), is an imaging modality that uses x-rays to build cross-sectional images (“slices”) of the body.
What does CT slices mean?
CT scans allow doctors to see cross-sectional images (slices) of your body. This slice shows heart and lung tissue.
What is tube arcing in CT?
Tube arcing occurs when there is a short-circuit within the tube, typically from the cathode to the tube envelope. The result is a temporary loss of x-ray output and a localized artifact.
What is CT Matrix?
“A CT image is composed of a square image matrix that ranges in size from 256 X 256 to 1024 X 1024 picture elements or pixels. Since a CT section has a finite thickness, each pixel actually represents a small volume element, or voxel.
What is CT angio test?
Overview. A computerized tomography (CT) coronary angiogram is an imaging test that looks at the arteries that supply blood to the heart. A CT coronary angiogram uses a powerful X-ray machine to produce images of the heart and its blood vessels. The test is used to diagnose a variety of heart conditions.
What is CT physics?
Abstract. Computed tomography (CT) is a method of acquiring and reconstructing the image of a thin cross section on the basis of measurements of attenuation. In comparison with conventional radiographs, CT images are free of superimposing tissues and are capable of much higher contrast due to elimination of scatter.
What is 320 Slice heart Scan?
The 320 Slice CT scan system offers a non invasive method to detect early Coronary artery disease, which may eventually cause narrowed or blocked vessels in the heart. With the help of accurate images of the walls of the blood vessels, your doctor can advise you on how to prevent further narrowing of vessels.