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头颅ＣＴ检查是临床上最常用的放射检查 ,对中枢神经系统疾病的诊断起着重要的作用 ,但其缺点为辐射剂量较高。目前国内尚无关于头颅ＣＴ检查的毫安秒 (ｍＡｓ)设置的统一标准 ,不同医院及不同型号的ＣＴ机所用的毫安秒(ｍＡｓ)相差很大 ,病人所受的Ｘ射线剂量也差别很大。本研
Head CT scan is the most commonly used clinical radiological examination, plays an important role in the diagnosis of central nervous system diseases, but its disadvantage is higher radiation dose. At present, there is no unified standard for setting milliampere-seconds (mAs) in head CT examination. The mAs used in different hospitals and different types of CT machines vary widely. The patient’s X-ray dose is also very different Big. This research