A computerised tomography (CT) scan uses X-rays and a computer to create detailed images of the inside of the body. If we look at the Micro-CT process in more depth and examine some of the physical aspects, the process can be expanded to four steps: Le CT Scanner La technique. The process of Acquiring a MicroCT Scan. The CT scan is a test where the interior of the human body is imaged in three dimensions. A dual energy CT scanner is fairly new technology that uses both the normal X-ray and also a second less powerful X-ray to make the images.
The x-ray beam passes through the human body in a thin axial slice, which is repeated in various directions (fig. CT Scanner . Il n'y a plus un seul détecteur, mais plusieurs détecteurs en action lors d'une rotation du tube à rayons X autour du patient, de 4 pour les premiers jusqu'256 pour les plus récents : c'est à dire que l'on acquiert 4, 16, 64 ou 256 images par rotation du tube. In this article, we will outline the basic science behind CT scans, describe the principles of interpretation, and highlight their advantages and drawbacks compared to other imaging techniques. X-ray Computed Tomography (CT) is a nondestructive technique for visualizing interior features within solid objects, and for obtaining digital information on their 3-D geometries and properties. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. A CT scan should always be performed if it is medically necessary and other exams using no or less radiation are unsuitable. L'appareil se compose d'une table sur laquelle repose le patient et d'un appareil radiologique particulier muni d'une ouverture (gantry) dans laquelle la table sera introduite durant l'examen. Computed tomography (CT) scanning is an extremely common imaging modality in modern medicine.With advancements in technology, it is rapidly replacing many diagnostic radiographic procedures. Figure 4. DEPARTMENT OF RADIOLOGY . Computed tomography (CT scan or CAT scan) is a noninvasive diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce horizontal, or axial, images (often called slices) of the body. At this time, the FDA does not … Dual Energy CT Scan What is a dual energy CT scan? CT Protocols BRAIN WITHOUT CONTRAST Purpose: Evaluation of subdural hematoma, epidural hematoma, stroke, bleed, headaches, initial workup of acute or changing dementia, mental status changes, fractures, trauma, shunt malfunction, new onset of seizures (particularly in adults) hydrocephalus.