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基于正交法布里-珀罗传感器的光声断层成像技术。

Photoacoustic tomography using orthogonal Fabry-Pérot sensors.

机构信息

University College London, Department of Medical Physics and Biomedical Engineering, Gower Street, London WC1E 6BT, United Kingdom.

出版信息

J Biomed Opt. 2017 Apr 1;22(4):41009. doi: 10.1117/1.JBO.22.4.041009.

DOI:10.1117/1.JBO.22.4.041009
PMID:27997632
Abstract

Fabry–Pérot sensors have been used to produce in-vivo photoacoustic images of exquisite quality. However, for ease of construction and interrogation, they are produced in a planar form. Planar arrays suffer from a limited detection aperture, which leads to artifacts in the reconstruction of the initial pressure distribution. Here, an L-shaped detection geometry is described that allows a greater field of view by placing a second planar array orthogonal to the first. This captures data from the deeper lying regions of interest and mitigates the limited view, thus reducing artifacts in the reconstructed initial pressure distribution.

摘要

法布里-珀罗传感器已被用于产生高质量的体内光声图像。然而,为了便于构建和询问,它们被制成平面形式。平面阵列受到有限的检测孔径的限制,这导致在初始压力分布的重建中出现伪影。这里描述了一种 L 形检测几何形状,通过将第二个平面阵列与第一个阵列正交放置,可以获得更大的视场。这从更深的感兴趣区域获取数据,并减轻了有限的视野,从而减少了重建初始压力分布中的伪影。

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