2D阵列成像系统用于机械转向,前置超声波导线
Adeoye Olomodosi1, Stephan Strassle Rojas2, Phuong Vu1
1Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, United States.
Ultrasonics
|July 17, 2024
概括
一个带有2D阵列成像系统的新型机器人导线改善了对外周动脉疾病 (PAD) 程序的可视化. 这项技术增强了通过复杂的血管系统和穿越慢性完全闭塞 (CTO) 的导航,减少了重血管化失败.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 血管外科 血管外科
背景情况:
- 周围动脉疾病 (PAD) 影响着数百万人,关键肢体缺血经常需要重新血管化.
- 慢性全闭症 (CTOs) 在PAD重血管化中存在重大挑战,导致高失败率.
- 当前的最小侵入性技术与曲的船只和CTO的导航扎,突出了先进的导线技术的需要.
研究的目的:
- 开发和评估一个可引导的机器人导线,并集成了前视成像功能.
- 通过复杂的血管系统实现增强的导航,并在PAD干预中促进CTO的穿越.
- 通过克服当前导线技术的局限性,提高重血管化程序的成功率.
主要方法:
- 设计和制造一个小型的9元 (3x3) 2D阵列传感器,运行在17MHz.
- 使用机械和电子方向盘实现合成光圈成像的混合光束成形方法.
- 血管位的声学表征和体外成像,包括猪动脉.
主要成果:
- 2D阵列传感器显示平均共振频率为17.6MHz, -6dB带宽为35%.
- 实现的侧向和轴向分辨率分别为0.271mm和0.122mm.
- 2D阵列系统比单元传感器显著改进,包括4.8dB的SNR增加和更高的分辨率 (58.5%横向,17.3%轴向).
结论:
- 一个新的2D阵列成像系统集成到一个机械引导导线成功开发和演示.
- 与单元传感器相比,该系统提供了更好的速率和视野.
- 带有2D成像的机器人导线显示出改善PAD重血管化结果的希望,特别是在涉及CTO的病例中.
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