生物医学中的光声成像
心跳
帧速率
断层摄影术
计算机科学
生物医学工程
光学
医学
放射科
计算机视觉
物理
计算机安全
作者
Parker R. Wray,Li Lin,Peng Hu,Lihong V. Wang
标识
DOI:10.1117/1.jbo.24.2.026003
摘要
We present a method of imaging angiographic structures in human extremities, including hands, arms, legs, and feet, using a newly developed photoacoustic computed tomography (PACT) system. The system features deep penetration (1.8 cm in muscular tissues) with high spatial and temporal resolutions. A volumetric image is acquired within 5 to 15 s while each cross sectional image is acquired within 100 μs. Therefore, we see no blurring from motion in the imaging plane. Longitudinal and latitudinal cross-sectional images of a healthy volunteer clearly show the vascular network of each appendage and highlight the system's ability to image major and minor vasculatures, without the use of an external contrast or ionizing radiation. We also track heartbeat-induced arterial movement at a two-dimensional frame rate of 10 Hz. This work substantiates the idea that PACT could be used as a noninvasive method for imaging human vasculatures.
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