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JJG744-2004《医用诊断X射线辐射源》检定规程在某些条款及检定方法上较JJG744-1997的确有所改进,但笔者认为基于以下原因还应作进一步修订:1.对X射线机分类描述不清,JJG744-2004中将X射线机分为连续工作方式、间歇工作方式、有影像增强器和无影像增强器。笔者认为应细分为摄影机和透视机,并分别描述检定项目、方法及结果判定。2.JJG744-2004未提到普通荧光屏透视机分辨力的测量要求和方法,但是普通荧光屏透视机只依据空
JJG744-2004 “Medical diagnostic X-ray radiation source” verification procedures in some terms and methods of verification than JJG744-1997 indeed improved, but I believe that due to the following reasons should be further revised: 1. X-ray machine classification description Ambiguous, JJG744-2004 in the X-ray machine is divided into continuous work, intermittent work, with image intensifier and image enhancer. I believe that should be subdivided into cameras and perspective machine, and describe the test items, methods and results of the decision. 2.JJG744-2004 does not mention the ordinary fluoroscopic resolution requirements and methods of fluoroscopy, but ordinary fluoroscopy fluoroscopy machine based on only empty