Improving visibility in photoacoustic imaging using dynamic speckle illumination
Improving visibility in photoacoustic imaging using dynamic speckle illumination
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DOI：
10.1364/ol.38.005188
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发表时间：
2013-12-01
期刊：
影响因子：
3.6
通讯作者：
Bossy, Emmanuel
中科院分区：
文献类型：
--
作者：
Gateau, Jerome;Chaigne, Thomas;Bossy, Emmanuel
在具有均匀照明的高频光声成像中，均匀的光吸收结构可能由于它们的大尺寸或有限视角问题而不可见。在这里，我们表明，通过利用动态散斑照明，它是可能的，以揭示功能，通常是不可见的光声系统组成的20 MHz的线性超声阵列。我们演示了一个O5毫米吸收圆柱体和30亩米的黑线排列在一个复杂的形状成像。通过评估照明图案上每个像素的值的变化，从针对幻影的不同随机散斑照明记录的光声图像直接检索隐藏的结构。(C)2013年美国光学学会
In high-frequency photoacoustic imaging with uniform illumination, homogeneous photoabsorbing structures may be invisible because of their large size or limited-view issues. Here we show that, by exploiting dynamic speckle illumination, it is possible to reveal features that are normally invisible with a photoacoustic system comprised of a 20 MHz linear ultrasound array. We demonstrate imaging of a O5 mm absorbing cylinder and a 30 mu m black thread arranged in a complex shape. The hidden structures are directly retrieved from photoacoustic images recorded for different random speckle illuminations of the phantoms by assessing the variation in the value of each pixel over the illumination patterns. (C) 2013 Optical Society of America