Radiology Question: What is the unit of time used to measure x-rays exposure? Radiology Interview QuestionAnswers: Answer #1ImpulsesAnswer #2Roentgnt to disintegration per unit sec Previous QuestionNext QuestionWhat are future challenges for the specialty of radiology?A diagnostic film is produced using 10 mA and .5 second. What exposure time is needed to produce the same film at 20 mA?