在正常和支气管收缩in vivo子肺部使用动态穿模式进行区域通风成像Xe增强DECT成像
Emma Verelst1, Sam Bayat2, Sylvia Verbanck3
1Radiology, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Laarbeeklaan 101-103, Brussels, 1090, BELGIUM.
Physics in medicine and biology
|February 3, 2026
概括
动态穿模式的 (Xe) 增强双能CT (Xe-DECT) 成像有效评估了子的区域肺透气. 这种技术揭示了支气管收缩期间增加的通风缺陷和降低效率,为全球肺功能测试提供了区域替代方案.
科学领域:
- 肺部成像扫描 肺部成像扫描
- 呼吸系统生理学 呼吸系统生理学
- 医学物理 医学物理
背景情况:
- 传统的肺功能测试只提供呼吸系统障碍的总体评估.
- 人们对肺功能成像越来越感兴趣,以量化评估区域肺功能.
- 动态穿模式 Xe-DECT 为区域通风评估提供了一个潜在的方法.
研究的目的:
- 调查Xe-DECT的动态穿模式,用于区域评估子肺中的 in vivo通风.
- 为了比较基线和甲胆 (MCh) 诱导的支气管收缩期间的区域通风.
- 量化健康和病态子肺中的通风缺陷和效率.
主要方法:
- 四只机械通风的子在异洗过程中使用动态穿模式DECT进行了扫描.
- 材料分解生成的和组织密度图像.
- 用子度图像计算通风缺陷分数 (VDF) 和特定通风量 (sV̇).
主要成果:
- 由MCh引起的支气管收缩显著增加了VDF,从13.8%±8.5%增加到29.6%±7.7%.
- 基线通风缺陷与无缺陷区域相比没有降低效率 (p = 0.306).
- 由MCh引起的通风缺陷显著降低了通风效率 (p = 0.004).
结论:
- 动态穿模式 Xe-DECT 能够在健康和病态的 in vivo 子肺部区域评估通风.
- 这种成像模式可以在支气管收缩期间检测区域通风的变化.
- Xe-DECT 提供了对肺功能的量化,区域性评估,以补充全球测试.
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