Three-dimensional acousto-optic mapping using planar scanning with ultrasound bursts

被引：0
|
作者：
Bratchenia, A. [1 ]
Molenaar, R. [1 ]
Kooyman, R. P. H. [1 ]
机构：
[1] Univ Twente, Fac Sci & Technol, Inst Biomed Technol, NL-7500 AE Enschede, Netherlands
来源：
PHOTONS PLUS ULTRASOUND: IMAGING AND SENSING 2009 | 2009年 / 7177卷
关键词：
quantitative imaging; acousto-optic spectroscopy; acousto-optic effect in turbid media; MODULATED OPTICAL TOMOGRAPHY; MULTIPLY SCATTERED-LIGHT; TISSUE;
D O I：
10.1117/12.808546
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have investigated the application of AO sensing for quantitative three-dimensional mapping of tissue-mimicking phantoms. An Intralipid phantom, which contains a turbid absorber, confined in a silicone tube, was used. Multiply scattered pulsed laser light was modulated by ultrasonic bursts focused in a predefined volume in the medium. By varying the delay time between ultrasound burst initiation and light pulse firing we could perform a scan in the ultrasound-propagation plane. By moving the ultrasound transducer, we could build up a volumetric map of modulation depth values. We have experimentally determined the acousto-optical modulation depth as a function of the absorption coefficient in phantom voxels of a few millimeters in size.
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页数：8
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