Dausch David E, Castellucci John B, Gilchrist Kristin H, Carlson James B, Hall Stephen D, von Ramm Olaf T
RTI International, Center for Materials and Electronics Technologies, Research Triangle Park, NC, USA.
Cardiovasc Revasc Med. 2013 May-Jun;14(3):157-9. doi: 10.1016/j.carrev.2013.03.008.
The Live Volumetric Imaging (LVI) catheter is capable of real-time 3D intracardiac echo (ICE) imaging, uniquely providing full volume sectors with deep penetration depth and high volume frame rate. The key enabling technology in this catheter is an integrated piezoelectric micromachined ultrasound transducer (pMUT), a novel matrix phased array transducer fabricated using semiconductor microelectromechanical systems (MEMS) manufacturing techniques. This technology innovation may enable better image guidance to improve accuracy, reduce risk, and reduce procedure time for transcatheter intracardiac therapies which are currently done with limited direct visualization of the endocardial tissue. Envisioned applications for LVI include intraprocedural image guidance of cardiac ablation therapies as well as transcatheter mitral and aortic valve repair.
实时容积成像（LVI）导管能够进行实时三维心内超声（ICE）成像，独特地提供具有深穿透深度和高容积帧率的全容积扇区。该导管的关键 enabling 技术是集成压电微机电超声换能器（pMUT），这是一种使用半导体微机电系统（MEMS）制造技术制造的新型矩阵相控阵换能器。这项技术创新可能有助于实现更好的图像引导，以提高准确性、降低风险并减少经导管心内治疗的手术时间，目前这类治疗对心内膜组织的直接可视化有限。LVI 的预期应用包括心脏消融治疗的术中图像引导以及经导管二尖瓣和主动脉瓣修复。
