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Equipment to reduce motion artifact due to periodic movement

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专利汇可以提供Equipment to reduce motion artifact due to periodic movement专利检索,专利查询,专利分析的服务。并且PURPOSE: To reduce motion artifacts (false images), by starting acquisition of projection at a point of time relating to a reference signal, and setting the center of a span of time for acquiring a set of projections within the standstill period.
CONSTITUTION: Heart beating and respiratory signals from transducers 4, 5 of a patient monitoring circuit 1 generate pulse signals from threshold detectors 6, 7, when marker signals are generated, while a computer 9 reads a real-time clock 8, and memorizes the point of time for each pulse. Acquisition of projections is started at a point of time related to the reference signal by a frame position encoder 10, X-ray tube controller 11, frame motor controller 12, radiation detector assembly 13 and data acquisition system 14 in CT interface circuit 2, and the center of a span of time for acquiring a set of projections is set within the standstill period recognized from each reference signal. Thus, it is possible to reduce the motion artifacts (false images).
COPYRIGHT: (C)1990,JPO,下面是Equipment to reduce motion artifact due to periodic movement专利的具体信息内容。

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