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牙片机房防护​的辐射防护(二)

来源: 更新时间:2019年09月27日 浏览: 0

牙片机房防护的辐射防护(二)

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牙片机房防护任何有助于减少患者剂量的设备和技术手段,我们均要考虑采用,诸如采取以下措施:管电压不应低于50kV,新设备应在(60~70)kV范围内操作,最好选70kV;与影像接受器尺寸和形状相仿的矩形准直器优于圆形准直器;在拍摄根尖片时,使用持片器可代替患者手指将胶片固定在口内适当位置,不仅减少患者手部受照剂量,而且可以避免他人受到直接照射,目前已有多种持片器可供临床使用;推荐使用可获取满意影像的成像速度最快的胶片和数字成像系统。牙片机的辐射防护首先机器本身的防护,减少渗漏射线漏出,提高有用射线的利用,降低散射线的扩散,在牙片机房的设置上按照X机房设计的要求严格设计、施工,并进行竣工验收,配备必须的铅围脖、铅眼镜和铅衣等防护用品,在上述基础上,牙科大夫减少不必要的医疗检查。射线的防护,就是在尽可能的条件下采取各种措施,在不得已进行医疗诊断任务时,使操作人员、患者和周围居民接受的辐射剂量不超过限值,并且应尽可能的降低上述人员的辐射剂量。借鉴国外先进经验,在广泛的剂量调查的基础上,制定专门的牙科放射学防护国家标准,这些能否真正执行好,还需要监督和宣传普及到位,提高全民的防护意识,充分发挥社会和舆论的监督,这对牙片机的辐射与防护具有非常重要的现实意义。


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