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在CT检查中,怀孕患者双胞胎胎之间的吸收剂量差异在CT检查中
Shuiyin Qu1,2, Haoran Jia1, Habib Zaidi3,4,5,6
1Institute of Radiation Medicine, Fudan University, Shanghai, China.
Medical physics
|February 6, 2025
概括
双胞胎胎的辐射剂量因身体的个体差异而有很大差异. 个性化计算模型为接受CT扫描的双胞胎孕妇提供更准确的胎儿辐射剂量计.
科学领域:
- 医学物理 医学物理
- 辐射科学 辐射科学
- 计算生物学 计算生物学
背景情况:
- 准确的胎儿辐射剂量估计对于在接受放射学检查的孕妇患者的风险益处评估至关重要.
- 全球双胞胎生育率有所增加,但对多胎儿的辐射剂量测量仍未得到充分研究.
- 现有的剂量测量模型可能无法充分解决双胞胎怀孕的复杂性.
研究的目的:
- 使用真实患者CT数据,为双胞胎胎开发个性化的计算模型.
- 从腹部和骨盆CT扫描中估计双胞胎胎的个性化辐射剂量.
- 为了研究个体胎儿变异对辐射剂量计的影响.
主要方法:
- 基于临床CT图像,为双胞胎怀孕 (第二和第三季度) 构建个性化计算幻影.
- 使用蒙特卡洛模拟与MCNP运输代码和验证的CT扫描仪.
- 对双胞胎胎的胎儿器官和全身辐射剂量的估计.
主要成果:
- 同一个患者的双胞胎之间吸收的胎儿器官剂量的显著变化 (0.63%39.64%,平均12.85%).
- 双胞胎胎的估计全体剂量差异在不同的妊娠年龄从7.51%到11.55%不等.
- 胎儿的个体特征,如体重和器官质量,影响吸收的辐射剂量.
结论:
- 胎儿体重和器官质量的变化直接影响吸收的辐射剂量.
- 个性化计算模型可以提高双胞胎怀孕中胎儿辐射剂量计的准确性.
- 这项研究改善了对发育中的胎儿的胎儿辐射剂量计不确定性的理解.
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