在心房动的导管切除过程中暴露于辐射
Lars Lickfett1, Mahadevappa Mahesh, Chandra Vasamreddy
1Division of Cardiology, The Johns Hopkins Hospital, Baltimore, Md, USA.
Circulation
|October 27, 2004
概括
这项研究发现,使用肺静脉 (PV) 隔离用于心房动 (AF) 的低辐射导管切除会使患者的辐射暴露最小. 优化的光镜技术将风险降至最低,使恶性瘤风险保持在之前报告的范围内.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 辐射瘤学 辐射瘤学
背景情况:
- 导管切除是一种常见的治疗心律失常,如心房动 (AF).
- 光学引导的程序需要仔细监测患者的辐射暴露.
- 优化辐射剂量对于在电生理学程序期间的患者安全至关重要.
研究的目的:
- 用肺静脉 (PV) 方法量化心房动 (AF) 导管切除期间患者的辐射暴露.
- 评估低剂量光学技术的安全性和有效性,以减少AF切除期间的辐射暴露.
主要方法:
- 15名患有AF的患者使用双平面X射线系统进行了光导向导管切除.
- 使用低脉冲光学 (7.5 fps) 和优化曝光率.
- 使用50-60个热发光剂量计 (TLD) 测量辐射剂量,以确定皮肤峰值剂量 (PSD) 和有效辐射剂量.
主要成果:
- 在AF手术中,光镜的平均时间为67.8分钟 (RAO) 和61.9分钟 (LAO).
- 平均PSD为1.0Gy (RAO) 和1.5Gy (LAO) 的时间.
- 据计算,每60分钟的光镜检查中,致命恶性瘤的终身风险为女性0.07%,男性0.1%.
结论:
- 低脉冲光学,避免放大,以及优化曝光率显著减少患者在AF剥离过程中的辐射暴露.
- 辐射剂量和相关风险与其他脑上节律失常报告的风险相似.
- 这些发现支持在导管切除手术中使用优化的光镜技术的安全性.
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