肺静脉壁的超声波表征:声谱和组织学相关性
José Angel Cabrera1, Damián Sánchez-Quintana, Jerónimo Farré
1Servicio de Cardiología, Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain.
Circulation
|August 21, 2002
概括
血管内超声波 (IVUS) 图像可以可视化肺静脉解剖,有助于心房移除. 这种技术准确地绘制了心肌套,这对于预防AF复发至关重要.
科学领域:
- 心血管成像 - 心血管成像
- 电子生理学 电子生理学
- 医疗器械技术 医疗器械技术
背景情况:
- 射频导管切除用于肺静脉隔离,以治疗心房动.
- 对静脉结架构的准确可视化对于成功切除至关重要.
- 血管内超声波 (IVUS) 被探索为这种可视化的工具.
研究的目的:
- 评估血管内超声波 (IVUS) 能够可视化肺静脉在静脉结处的结构的能力.
- 为了比较IVUS成像与组织学发现的准确性.
主要方法:
- 分析了来自8名非心脏病死亡患者的32个肺静脉.
- 使用3.2F,30MHz导管获得横截面IVUS图像.
- 将IVUS图像与相应间隔的组织学横截图进行比较.
主要成果:
- 肺静脉壁表现出一个明显的三层超声波模式.
- 中间的低心率层,代表左心房肌肉,在静脉结处是最厚的.
- IVUS测量结果与肌肉直径和肌肉厚度的组织学数据密切一致.
结论:
- IVUS成像提供了肺静脉心肌袖子的详细信息.
- 这种技术可以准确地确定心肌套的远端边界和厚度.
- 在肺静脉隔离手术期间,IVUS是精确准的宝贵工具.
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