一个超声波矩阵转换器用于高率3D心内心声谱
Djalma Simões Dos Santos1, Boudewine Ossenkoppele1, Yannick M Hopf2
1Laboratory of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands.
Ultrasound in medicine & biology
|November 30, 2023
概括
开发了一种新的超声波矩阵传感器原型,用于高率3D心脏内共振,从而实现先进的心脏成像. 这项创新支持复杂的程序和详细的心脏功能跟踪.
科学领域:
- 生物医学工程 生物医学工程
- 医疗成像医学成像
- 超声波技术 超声波技术 超声波技术
背景情况:
- 心内回声学 (ICE) 对于指导心脏干预至关重要.
- 目前的ICE技术在率和3D体积成像方面存在局限性.
- 需要高率的3D ICE来实时可视化复杂的心脏结构和动态.
研究的目的:
- 开发和描述一个超声波矩阵传感器原型,用于高率3D内心心回声.
- 为了证明先进的成像技术在以导管为基础的系统中的可行性.
- 为了提高复杂的干预心脏手术的可视化能力.
主要方法:
- 开发一个16x18硫酸元素矩阵阵列与集成的特定应用集成电路 (ASIC).
- 实施子阵梁成形和接收式数字化,以减少电缆数量.
- 利用时间分割复杂化和脉冲振幅调制来进行数据传输.
- 采用七个风扇形的分歧发射束,以7.7kHz的脉冲重复频率进行高率的发射.
主要成果:
- 传感器在5厘米和60%的带宽下实现了28Pa/V的传输效率.
- 在接收时测量的动态范围为80dB,最小可检测压力为10Pa.
- 高元素产量 (98%) 证实了制造工艺的有效性.
- 在70°x70°x10厘米的体积上,已经证明了高达1000卷/秒的成像能力.
结论:
- 开发的超声波矩阵传感器原型使得高率的3D心脏内回声学成为可能.
- 先进的成像功能支持复杂的干预程序.
- 潜在的全体积流,组织和心脏中的机电波跟踪.
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