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用低频断层扫描超声波对通风和肺损伤进行成像
Andre Vieira Pigatto1, Sergio Furuie2, Diego Cardénas2
1School of Biomedical Engineering, Colorado State University, Fort Collins, Colorado, USA.
Medical physics
|September 23, 2024
概括
低频超声波断层扫描 (USCT) 可以对通风肺部的气流变化进行成像,为急性呼吸困扰综合征提供了一种新的床边工具. 这项研究证明了USCTCT.
科学领域:
- 医疗成像医学成像
- 肺部医学 肺部医学
- 生物医学工程 生物医学工程
背景情况:
- 机械通风对于急性呼吸衰竭至关重要,但有可能造成肺损伤.
- 目前的监测缺乏精准医学能力和实时不良事件警报.
- 传统的超声波具有有限的肺透,阻碍有效的胸部成像.
研究的目的:
- 提出一种新的低频超声波计算机断层扫描 (USCT) 方法,用于体内对通风肺部空气流的成像.
- 评估USCT在呼吸和诱导肺损伤期间可视化区域胸部声音速度变化的能力.
- 建立了第一个 in vivo 断层扫描超声波对呼吸系统变化的成像.
主要方法:
- 在机械通风的猪模型上以125kHz收集的低频超声波计算机断层扫描 (USCT) 数据.
- 诱导的肺损伤 (肺胸部,肺,肺) 已经被创造出来.
- 用规范折射校正高斯-牛顿飞行时间算法计算的断层重建.
主要成果:
- 通过USCT,肺部区域的周期性变化与机械呼吸器呼吸率相关.
- 重建的图像显示了与诱导的肺损伤一致的区域变化.
- 在手术过程中没有可用的地面真相,因为CT扫描是受伤前/后.
结论:
- 在一个通风的猪模型中,低频USCT成功地成像了与空气流相关的区域胸部声速变化.
- 这种成像模式显示了在急性呼吸窘迫综合征的床边监测的潜力.
- 这标志着低频断层扫描超声波在呼吸道成像中的首次体内演示.
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