在多探测器计算机断层扫描 (MDCT) 检查过程中诱导的生物损害的评估
Amarja Pandurang Laad1, Tamizh Selvan Gnanasekaran2, Shashi Kumar Shetty3
1Department of Medical Imaging Technology, K.S. Hegde Medical Academy, Nitte (Deemed to be University), Deralakatte, Mangalore, India.
Cell biochemistry and biophysics
|June 10, 2024
概括
这项研究表明,在计算机断层扫描 (CT) 扫描中使用对比介质显著增加了辐射剂量和DNA损伤,强调了在诊断中需要谨慎使用多探测器CT (MDCT).
科学领域:
- 放射学 放射学是一门学科.
- 医学物理 医学物理
- 遗传学 遗传学 是一个
背景情况:
- 计算机断层扫描 (CT) 是一种至关重要的诊断工具,利用X射线进行详细的成像.
- 多探测器计算机断层扫描 (MDCT) 使用含的对比介质来提高诊断准确度.
- 人们担心与对比剂相关的辐射暴露增加和潜在的DNA损伤.
研究的目的:
- 为了比较物理辐射剂量和CT扫描带有和没有含对比剂的生物效应.
- 评估通过微核 (MN) 频率测量的DNA损伤,在接受对比度增强CT的患者中.
- 为了确定物理剂量参数和生物效应之间的相关性.
主要方法:
- 一组21名没有癌症病史的参与者接受了前对比和后对比CT胸部和腹部扫描.
- 作为对照,在手术前采集了血液样本.
- 物理剂量指标 (DLP,CTDI) 和MN频率 (CBMN测试) 被测量并比较前后对比扫描.
主要成果:
- 与对比前组相比,在对比后组观察到物理辐射剂量和MN频率的统计学上显著增加 (p <0.05).
- 虽然在前后对比组之间发现了正相关性,但它没有达到统计学意义 (p < 0.05).
- 在MDCT中进行的对比干预证实可以提高物理剂量和DNA损伤的生物指标.
结论:
- 增强对比度的MDCT导致更高的物理辐射剂量和增加的生物效应,特别是DNA损伤.
- 这些发现强调了在MDCT中明智使用对比剂的重要性,以尽量减少患者的风险.
- 进一步的研究可能是有必要的,以充分阐明长期影响和优化对比方案.
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