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To avoid large grating lobes, using a small element-to-element pitch of ultrasound array transducers for photoacoustic (PA) imaging is necessary. Such constraint introduces higher system cost and complexity, especially when greater than 20-MHz high-frequency arrays are used. As a result, to reduce fabrication difficulties and obtain better signal sensitivity in PA imaging, ultrasound linear array...
In this study, the feasibility of visualization of microcalcification using optoacoustic (photoacoustic) imaging (PAI) technique is investigated. The non-ionizing radiation and speckle-free characteristic makes the PAI a potential diagnostic tool for early breast cancer detection. To verify this idea, a custom-made laser illumination probe integrated with commercial ultrasound imaging system was established...
Photoacoustic microscopy is a hybrid imaging modality which captures the contrast advantage of optical imaging with the resolution advantage of ultrasonic imaging. This technique provides great promise for studying the structure and dynamics of tissue microvasculature in development and pathogenesis. In this paper we present results of a new high frequency array based photoacoustic microscopy system...
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