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In positron emission tomography (PET), the annihilation radiation is usually detected as a coincidence occurrence that localizes the position of the annihilation event to a straight line joining the detectors. The measure of the difference between the time of flight (TOF) of the annihilation...
Four cases of cerebral emboli diagnosed on computed tomography as foci of increased density are discussed. The emboli were calcified in at least two cases. Both cardiac and carotid sources contributed dense emboli, which were seen to lodge at typical scan sites: near the anterior cerebral artery...
Computed tomography (CT) has become a useful procedure in the evaluation of abdominal trauma, since it is able to detect abnormalities in contour or tissue density of the major abdominal and retroperitoneal organs and spaces. Cases have been reported demonstrating the usefulness of CT in...
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