在切除前的单相延迟对比计算机断层扫描,以减少辐射暴露,而不会影响肺静脉诊断的准确性
Keishiro Yagyu1, Yasushi Oginosawa2, Takahiro Kobayashi1
1The Second Department of Internal Medicine, University of Occupational and Environmental Health, Kitakyushu, Fukuoka, Japan.
Journal of cardiovascular electrophysiology
|July 18, 2025
概括
单相延迟对比增强CT (CCT) 准确评估肺静脉解剖学和左心房附属体 (LAA) 血栓,用于心房移除计划. 与双相CCT相比,这种方法显著减少了辐射暴露.
科学领域:
- 心脏病学 心脏病学
- 放射学 放射学是一门学科.
- 医疗成像医学成像
背景情况:
- 增强对比度的CT (CCT) 对于规划心房动 (AF) 导管切除和检测左心房附属体 (LAA) 血栓形成至关重要.
- 双相CCT虽然具有信息性,但对患者的辐射暴露提出了担忧.
研究的目的:
- 评估单相延期CCT在提供AF切除术前重要信息方面的有效性.
- 为了确定单相延迟CCT协议是否可以在不影响诊断准确性的情况下最大限度地减少辐射暴露.
主要方法:
- 102名接受AF消去双相CCT的患者被追溯分析.
- 肺静脉 (PV) 解剖学和LAA血栓检测使用早期和延迟阶段图像进行评估.
- 图像质量,解剖学一致性和辐射剂量在双相和单相 (早期或延迟) 协议之间进行了比较.
主要成果:
- 单相延迟CCT显示了PVs的一致解剖细节和准确的LAA血栓检测,与双相成像相似.
- 辐射剂量在单相成像中明显较低 (延迟:876.8 ± 526.6 mGy-cm) 与双相相 (2320.1 ± 1031.0 mGy-cm) 相比.
- 在延迟阶段没有过度估计LAA血栓.
结论:
- 单相延期CCT是一种可靠的方法,用于AF切除术前评估,提供精确的解剖和血栓评估.
- 这种方法显著减少了辐射暴露,为接受取消前评估的患者提供了更安全的替代方案.
- 诊断可靠性得到维护,使单相延期CCT成为临床实践中可行的选择.
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