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用于超声波温度计的密集的声速移位成像
Tal Grutman1, Tali Ilovitsh1,2
1Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel.
Physics in medicine and biology
|September 29, 2023
概括
这项研究引入了一种新的密集超声波音速转移成像 (DSI) 方法,用于在热剥离过程中进行非侵入性温度监测. 与现有技术相比,DSI提供了更快,更准确的温度变化测量.
科学领域:
- 医疗成像医学成像
- 生物医学工程 生物医学工程
- 超声波技术 超声波技术 超声波技术
背景情况:
- 热移除是一种使用热来破坏不需要的组织的医疗程序.
- 在热除过程中精确的温度监测对于有效的治疗和患者安全至关重要.
- 目前用于温度监测的方法可能具有侵入性或缺乏精度.
研究的目的:
- 开发一种密集的算法,用于计算热剥离过程中的声速转移.
- 建立一种使用超声波评估温度变化的非侵入性方法.
- 提高热监测的速度,准确性和空间连贯性.
主要方法:
- 开发了一个密集的音速转移成像 (DSI) 算法,结合密集的光流和反向问题的规范化.
- 使用Farneback光流来跟踪像素转移和数学建模来计算音速转移.
- 使用热电偶测量ex vivo胸温度上升的校准系统.
主要成果:
- 成功测量了通过热废除诱导的音速转移在一个阿加罗斯幻影中.
- 实现了高温度计精度,温度变化低至8°C的误差小于2°C.
- 与标准热应变成像 (TSI) 相比,在高强度聚焦超声波诱导的高温症中表现出优异的空间连贯性和运行时间性能.
结论:
- 密集的超声波音速转移成像是一种可行的技术,用于监测热剥离.
- DSI方法比目前的温度计方法更快,更强大,并且提供了更高的临床适用性.
- DSI提出了一个有希望的非侵入性,实时和成本效益的解决方案,用于临床环境中的热监测.
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