![]() ![]() This type had a major advantage since sweep speeds can be much faster, allowing for less blurry imaging of moving structures, such as the heart and arteries. Main article: Electron beam computed tomographyĮlectron beam tomography (EBT) is a specific form of CT in which a large enough X-ray tube is constructed so that only the path of the electrons, travelling between the cathode and anode of the X-ray tube, are spun using deflection coils. The 1979 Nobel Prize in Physiology or Medicine was awarded jointly to South African-American physicist Allan MacLeod Cormack and British electrical engineer Godfrey Hounsfield "for the development of computer-assisted tomography". While CT is most prominently used in medical diagnosis, it can also be used to form images of non-living objects. Since its development in the 1970s, CT scanning has proven to be a versatile imaging technique. CT scan can be used in patients with metallic implants or pacemakers, for whom magnetic resonance imaging (MRI) is contraindicated. The multiple X-ray measurements taken from different angles are then processed on a computer using tomographic reconstruction algorithms to produce tomographic (cross-sectional) images (virtual "slices") of a body. ĬT scanners use a rotating X-ray tube and a row of detectors placed in a gantry to measure X-ray attenuations by different tissues inside the body. The personnel that perform CT scans are called radiographers or radiology technologists. Nam risus ante, dapibus a molestie consequat, ultrices ac magna.A computed tomography scan (usually abbreviated to CT scan formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. Nam lacinia pulvinar tortor nec facilisis. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce dui lectus, congue vel laoreet ac, dictum vitae odio. Nam risus ante, dapibus a molestie consequat, ultrices ac magna. Pellentesque dapibus efficitur lsectetur adipiscing elit. ![]() ![]() Which of the elements of this scenario represent a flow from a household to a firm? This could be a flow of dollars, inputs, or outputs. Bob earns $200 per week working for Big Bend. Cho earns $650 per week working for Passing Left. Event Factor Market Product Market Bob spends $150 to purchase driving lessons from Passing Left. Identify whether each of the following events in this scenario occurs in the factor market or the product market. Bob uses $150 to purchase driving lessons from Passing Left. Big Bend pays Bob $200 per week to instruct yoga. She uses $10 to take a yoga class at Big Bend. Suppose Cho earns $650 per week working as a driving instructor for Passing Left. L Markets for Factors of Production Based on this model, households earn income when V purchase V in factor markets. The outer set of arrows (shown in green) shows the flow of dollars, and the inner set of arrows (shown in red) shows the corresponding flow of inputs and outputs. The circular-flow model The following diagram presents a circular-flow model of a simple economy. ![]()
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