用于光声断层成像的声学可穿透光学反射器。

Acoustically penetrable optical reflector for photoacoustic tomography.

机构信息

Peking University, College of Engineering, Department of Biomedical Engineering, Beijing 100871, China.

出版信息

J Biomed Opt. 2013 Jul;18(7):070503. doi: 10.1117/1.JBO.18.7.070503.

DOI:10.1117/1.JBO.18.7.070503

Abstract

Photoacoustic tomography (PAT) detects ultrasound signals generated by the objects after absorbing illuminating photons. However, the widely used piezoelectric ultrasound transducers are generally not optically transparent, which would cause conflicts between the light illumination and the ultrasonic detection in PAT. We report a different acoustically penetrable optical reflector (APOR) concept to provide a solution to this conflict. We measured the properties of an APOR and experimentally tested its performance in a PAT system. The results demonstrated that the APOR successfully allowed the transducer to detector photoacoustic signals without affecting the light illumination. Moreover, the APOR concept can be readily implemented in various PAT systems.

摘要

光声断层扫描（PAT）检测物体吸收照射光子后产生的超声信号。然而，广泛使用的压电超声换能器通常不具有光学透明性，这会在 PAT 中造成光照明和超声检测之间的冲突。我们报告了一种不同的声学可穿透光学反射器（APOR）概念，以提供解决此冲突的方法。我们测量了 APOR 的性能，并在 PAT 系统中进行了实验测试。结果表明，APOR 成功地允许换能器检测光声信号，而不会影响光的照射。此外，APOR 概念可以很容易地应用于各种 PAT 系统。