US4679217A - X | 合法醫療器材資訊網

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This invention relates generally to radiation systems, such as X-ray systems, and, more particularly, to image producing structures, such as X-ray film cassettes, for recording an image of an object, or a selected region thereof, exposed to such radiation and for detecting the level of such exposure so as to provide an output signal which can be used to determine the amount of radiation exposure.

In using radiation systems, such as X-ray equipment, as in medical or other contexts, it is desirable to provide systems which can effectively control the amount of X-ray exposure to which an object is subjected, particularly where such equipment is to be used with objects such as human or animal patients. In order to control such exposure, an appropriate determination of the radiation to which the object has been exposed is required and various means can be used for automa...