Photothermal Modulation of X-ray Phase Contrast Images

机译：X射线相衬图像的光热调制

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The in-line x-ray phase-contrast imaging method relies on changes in index of refraction within a body to produce image contrast. In soft tissue, index of refraction variations arise from density changes so that phase contrast imaging provides a map of density gradients within a body. An intense, short pulse laser beam that is differentially absorbed by an object within a body will produce a thermal wave with an associated density change that propagates outwardly from the interface between the object and the body. Experiments are described where a pulsed Nd:YLF laser is synchronized to an image intensifier to record the effects of the energy deposited by a pulsed laser.

机译：在线式X射线相衬成像方法依赖于体内折射率的变化来产生图像对比度。在软组织中，折射率变化是由密度变化引起的，因此相衬成像可提供体内密度梯度的图。强烈的短脉冲激光束被人体中的物体不同地吸收，将产生具有相关密度变化的热波，该密度波从物体与人体之间的界面向外传播。描述了实验，其中将脉冲Nd：YLF激光与图像增强器同步，以记录脉冲激光沉积的能量的影响。

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来源
《Photons Plus Ultrasound: Imaging and Sensing 2007; Progress in Biomedical Optics and Imaging; vol.8 no.14; Proceedings of SPIE-The International Society for Optical Engineering; vol.6437》|2007年|64371N.1-64371N.5|共5页
会议地点 San JoseCA(US)
作者
Christopher M. Laperle; Guohua Cao; Theron J. Hamilton; Christoph Rose-Petruck; Gerald J. Diebold;
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作者单位

Brown University, Chemistry Department, Providence, RI, 02912;

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原文格式 PDF
正文语种 eng
中图分类光、激光生物医学;
关键词
X-ray phase contrast; laser;

机译：X射线相衬；激光;

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4. Photothermal Modulation of X-ray Phase Contrast Images [C] . Christopher M. Laperle, Guohua Cao, Theron J. Hamilton, Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-Optics . 2007

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Photothermal Modulation of X-ray Phase Contrast Images

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