晚期增强计算机断层扫描用于左心室纤维化成像:试点"概念验证"研究
Pietro G Lacaita1, Christoph Beyer2, Fabian Plank2
1Department of Radiology, Innsbruck Medical University, 6020 Innsbruck, Austria.
Diagnostics (Basel, Switzerland)
|December 17, 2024
概括
晚期增强计算机断层扫描 (LE-CT) 有效地映射左心房纤维化 (LA),与电解剖绘图中看到的低电压区域相关. 这种成像技术是可行的,有助于指导LA导管切除对于心房动.
科学领域:
- 心脏病学 心脏病学
- 医疗成像医学成像
- 电子生理学 电子生理学
背景情况:
- 左心房纤维化成像对于指导LA导管切除至关重要.
- 心脏计算机断层扫描 (CT) 为纤维化评估提供了心脏磁共振成像 (CMR) 的潜在替代方案.
研究的目的:
- 为了评估晚期增强 (LE) 纤维化映射使用CT.
- 在电解剖绘图 (EAM) 上将CT衍生LE发现与低压区域 (LVA) 相关联.
主要方法:
- 128片双源CT血管造影 (CTA),然后在经过切除的心房患者中进行LE-CT扫描.
- 测量LA墙壁厚度 (LAWT) 和量化LE,与EAM衍生的LVA相比.
主要成果:
- 在LWT>2毫米 (91.7%) 和1.5毫米 (80.2%) 之间,LE的流行率更高.
- 在一小部分患者中,LE-CT与LVA (<0.5 mV:80%;<0.7 mV:86.6%) 达成良好一致.
- 对于LE-CT的有效辐射剂量很低 (0.95 mSv).
结论:
- LE-CT是一种可行的左心房纤维化映射方法.
- 随着LAWT增加,LE更频繁,并且与LA改造和低压区域相关,支持其用于指导切除的使用.
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