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辐射剂量是指由光子的电离辐射引起的空气电离的程度, [1]在特定体积的空气中辐射剂量大小取决于辐射释放的电荷除以特定体积的空气的质量。[1][2]包括X射线、计算机体层成像、乳房摄影术、肺通气和灌注扫描、骨扫描、心脏灌注扫描、血管摄影、放射治疗等在内的不同的放射性医学检查和治疗手段的辐射剂量都有所不同。 [3]
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