【摘要】 本文应用热释光剂量元件测定了苏州市第一人民医院９０人次Ｘ线胸透时受检者体表照射量的分布。测量结果表明：相应于第６胸椎处的照射量最大，以此处为参考点照射量向四周逐渐下降。每次胸透受检者最大入口体表照射量的平均值和单次测量标准差分别为２．１５×１０￣（－４）和１．３４×１０￣（－４）Ｃ·ｋｇ￣（－１），每次胸透所致平均有效剂量当量为０．２２ｍＳｖ。更多还原

【Abstract】 Distributions of body surface exposure of 90 examinees under chest fluoroscopyin Suzhou First People′s Hospital were measured. The results show that:the reference pointof the maximum body surface exposure is at sixth thoracic vertebra. The exposures in vari-ous directions were decreased as the distance increased from the reference point. The averageexposure of the reference point per person per examination is(2. 15±1. 34)×10￣(-4)C·kg￣(-1).The average effective dose equivalent per person per examination is 0. 22 mSv.更多还原