PICKER公司IQ系列CT机半野扫描原理及故障分析

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美国PICKER公司生产的IQ系列CT机,是采用低压滑环技术,具有1200个固体探测器的第四代CT机。它将扫描宽度分成全野方式(FullField)和半野方式(HalfField)两种,并根据病人扫描部位的不同,分别采用全野或半野扫描方式。在全野方式下,X线束的宽度(直径48cm)是半野方式( The IQ series CT machines produced by PICKER Inc. of the United States are the fourth-generation CT machines with low-pressure slip ring technology and 1,200 solid-state detectors. It divides the scan width into two types: full field and half field, and adopts full field or half field scanning according to the different scanning positions of the patient. In the full field mode, the width of the X-ray beam (diameter 48cm) is the half-field mode (
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