Aretz H T, Gregory K W, Martinelli M A, Gregg R E, LeDet E G, Hatch G F, Sedlacek T, Haase W C
Department of Pathology, New England Deaconess Hospital, Burlington, MA.
Int J Card Imaging. 1991;6(3-4):231-7. doi: 10.1007/BF01797854.
Intravascular ultrasound imaging catheters and forward firing laser atherectomy systems are both being used in the coronary vascular tree of man. When used in conjunction, ultrasound imaging may reduce the probability of perforation and dissection related to laser atherectomy. A novel system is presented which combines ultrasound imaging and laser atherectomy capabilities on the same catheter. The system incorporates a holmium YAG laser directed perpendicular to the long axis of the catheter along with a co-directional ultrasound sensor. Ultrasound images are assembled by computer using the angle of the catheter tip and its linear advance associated with each ultrasound echo signal. In vivo experimental results are presented.
血管内超声成像导管和前向发射激光斑块切除术系统都已应用于人体冠状动脉血管树。联合使用时，超声成像可降低与激光斑块切除术相关的穿孔和夹层形成的概率。本文介绍了一种新型系统，该系统将超声成像和激光斑块切除功能集成在同一导管上。该系统包括一个垂直于导管长轴方向的钬钇铝石榴石激光，以及一个同向超声传感器。超声图像由计算机根据导管尖端的角度及其与每个超声回波信号相关的线性推进来合成。文中给出了体内实验结果。
