THREE-DIMENSIONAL INTRAVASCULAR IMAGING WITH ULTRASOUND

该项目的目标是开发一种超声成像方法和 用于激光血管成形术前瞻性指导的换能器设计 导管。这项新技术解决了当前 腔内成像设备作为车载制导，可以成为关键 用于治疗动脉疾病的新手术工具的组成部分 在血管系统内。成像是基于三维稀疏的 采用新方法进行阵列重建以提高动态范围。 换能器将由新的加工方法制造， 通过联合体安排开发的压电材料 密苏里大学罗拉分校。所开发的技术将 影响广泛的治疗设备。指导具有潜在的 通过斑块可视化扩大血管内治疗的作用， 监控过程中材料的去除量，以及 防止血管穿孔。第一代血管内手术 球囊血管成形术等技术为300多人提供治疗 一年有上千名病人。第二代设备。有了指导，就可以 提高介入治疗的有效性，增加 患者适合介入治疗，且有明显的 减少搭桥手术对医疗成本的影响 手术。

The goal of this project is to develop an ultrasound imaging method and transducer designs for forward looking guidance of a laser angioplasty catheter. This new technology, which addresses the limitations of current intraluminal imaging devices as on-board guidance, can become a key component of new surgery tools for the treatment of arterial disease from within the vascular system. Imaging is based upon three-dimensional sparse array reconstruction with novel approaches for improving dynamic range. The transducers will be fabricated from new, methods for processing, piezoelectric materials being developed through a consortium arrangement with the University of Missouri-Rolla. The technologies developed will impact a wide range of therapy devices. Guidance has the potential to expand the role of intravascular therapy through visualization of plaque, monitoring the amount of material removed during a procedure, and preventing vessel perforation. First generation intravascular surgery techniques, such as balloon angioplasty, provide therapy to over 300 thousand patients a year. Second generation devices. with guidance, can improve the effectiveness of interventional therapy, increase the number of patients suitable for interventional treatment, and have a significant impact on health care costs by reducing the number of bypass graft surgeries.