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ARRT TEST 2025 REVIEWED QUESTIONS AND ANSWERS LATEST UPDATE

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ARRT TEST 2025 REVIEWED QUESTIONS AND ANSWERS LATEST UPDATE An acceptable PA chest exam is taken using 300 mA, 0.008 seconds, and 110 kVp. If this examination is repeated using an AEC that has a mini ... mum response time of 10 ms, which of the following exposure factors would be appropriate? 400 mA, 0.006 seconds, 110 kVp. 200 mA, 0.012 seconds, 110 kVp. 600 mA, 0.004 seconds, 110 kVp. All of the above would be appropriate. 200 mA, 0.012 seconds, 110 kVp. The minimum response time (MRT) is the amount of time it takes for the AEC to detect and respond to an exposure. In this example, the MRT is 10 ms (0.01 seconds). This means that the AEC will not terminate an exposure in less than 0.01 seconds. Therefore, the only exposure setting that does not violate the MRT of this AEC is 200 mA. If 200 mA is selected, the exposure time will run for 0.012 seconds and the receptor will be properly exposed. If the exposure time for an exam is less than the MRT, the receptor exposure increases because the unit will not turn off until the MRT is reached. Exposure of an embryo or fetus to radiation from ________________ can result in congenital abnormalities. 0 days to 9 days of development. 10 days to 6 weeks of development. 6 weeks to 20 weeks of development. 21 weeks to term. 10 days to 6 weeks of development. Exposure of an embryo from 10 days to 6 weeks of development can result in congenital abnormalities. X-ray tubes are operated at or above ______ kVp to avoid being space-charge limited. [Show More]

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