在10年后,CT扫描患者中,有多少人还活着或已经去世?
Maria T Mataac1, Xinhua Li1, Madan M Rehani1
1Massachusetts General Hospital, 55 Fruit Str., Boston, MA, USA.
European journal of radiology
|July 18, 2024
概括
接受多次CT扫描的患者面临辐射风险,即使是严重的疾病.在高剂量扫描 (≥50mSv) 后十年,许多幸存者仍然可能经历辐射效应,影响长期健康结果.
科学领域:
- 放射学和医学成像学 医学成像学
- 辐射瘤学 辐射瘤学
- 公共卫生 公共卫生
背景情况:
- 接受多次计算机断层扫描 (CT) 检查的患者积累了大量的辐射剂量.
- 对这些患者的长期健康风险存在担忧,特别是如果他们有先前存在的严重疾病.
- 由于患者的预后,高累积有效剂量 (CED) 辐射无关紧要的概念需要科学评估.
研究的目的:
- 根据CT扫描的累积有效剂量 (CED) 来评估患者的长期存活率.
- 为了确定从CT扫描中暴露于较高辐射的患者是否面临重大风险,即使他们患有严重疾病.
- 为了验证或驳斥短期死亡率否定频繁扫描患者的辐射担忧的假设.
主要方法:
- 对2013年接受CT扫描的36545名患者进行了回顾性分析.
- 患者被分为四个累积有效剂量 (CED) 组:0-<10 mSv,10-<50 mSv,50-<100 mSv和≥100 mSv.
- 对2023年12月的生存率进行了分析,重点关注第一年内的死亡率和10年后的长期生存率.
主要成果:
- 在所有剂量组中,成像后一年内死亡率达到峰值.
- 在一年内,高剂量组 (≥50 mSv) 的患者与最低剂量组 (<10 mSv) 相比,死亡率明显高.
- 在高剂量组中的大量患者 (36.7%在≥100mSv,48.0%在50-<100mSv) 在10年后仍然活着,可能暴露于辐射效应.
结论:
- 来自CT扫描的较高累积有效剂量 (CED) 与短期死亡率的增加有关.
- 幸存高剂量CT扫描的大量患者在十年后仍然活着.
- 这些长期幸存者可能面临潜在的辐射相关健康影响,需要在临床实践和政策制定中加以考虑.
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