在形光束CT中优化剂量:上肢位置对患者和程序暴露的影响
Marek Kuzniar1, Nader Albin1, Sara Bruce2
1Department of Surgical Sciences, Uppsala University Hospital (Akademiska Sjukhuset), Uppsala, Sweden.
The Journal of cardiovascular surgery
|December 9, 2025
概括
患者手臂的位置在复杂的内血管大动脉修复过程中不会影响辐射剂量. 身体质量指数 (BMI) 显著影响辐射暴露,突出了在内血管程序中需要量身定制的成像协议的需要.
科学领域:
- 医疗成像医学成像
- 内血管外科 血管内血管外科
- 辐射瘤学 辐射瘤学
背景情况:
- 圆束计算机断层扫描 (CBCT) 对于复杂的内血管大动脉修复至关重要.
- 了解影响CBCT辐射剂量的因素对于患者的安全至关重要.
- 目前关于这些程序中的辐射剂量决定因素的知识有限.
研究的目的:
- 为了评估患者手臂位置对CBCT辐射剂量的影响.
- 评估不同CBCT协议对辐射暴露的影响.
- 为了确定影响内血管大动脉修复期间辐射剂量的关键因素.
主要方法:
- 追溯分析96名通过手术内CBCT进行血管内大动脉修复的患者.
- 基于手臂位置的分层 (手臂向上与手臂向下).
- 两种CBCT方案 (4sDR 125 kVp护理方案与4sDR手术方案) 的比较.
主要成果:
- 在手臂向上和手臂向下定位之间没有发现CBCT辐射剂量的显著差异.
- 身体质量指数 (BMI) 与CBCT有效剂量有很强的相关性 (r=0.45,P<0.001).
- 4sDR 125 kVp护理协议减少了CBCT特定的辐射,但由于光镜和DSA,总程序剂量仍然相似.
结论:
- 患者手臂的位置不会显著改变CBCT辐射剂量.
- 体重指数 (BMI) 是辐射暴露的关键因素,需要尺寸特定的成像协议.
- 优化成像策略至关重要,以尽量减少辐射暴露,而不会影响程序的有效性.
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