Exposures to Patient and Personnel in Computed Axial Tomography

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Abstract
Distribution of radiation exposure circumcranially for patients undergoing brain scanning with EMI computed tomographic [CT] equipment was measured using thermoluminescent dosimeters. The exposures were 1-5 R depending on position relative to tube motion. The maximum exposure of 5 R in CT scanning lies between the estimated exposure of 1.2 R for skull radiography and approximately 10 R for angiographic examination. Measured exposures are reported corresponding to locations of the patients'' eyes, thyroid, chest and gonads, and at various locations in the vicinity of the unit.

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