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Tomography-assisted Doppler photoacoustic microscopy: proof of concept

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Abstract

The previous methods to measure flow speed by photoacoustic microscopy solely focused on either the transverse or the axial flow component, which did not reflect absolute flow speed. Here, we present absolute flow speed maps by combining Doppler bandwidth broadening with volumetric photoacoustic microscopy. Photoacoustic Doppler bandwidth broadening and photoacoustic tomographic images were applied to measure the transverse flow component and the Doppler angle, respectively. Phantom experiments quantitatively demonstrated that ranges of 55° to 90° Doppler angle and 0.5 to 10 mm/s flow speed can be measured. This tomography-assisted method provides the foundation for further measurement in vivo.

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DOI:10.3788/COL202018.101702

所属栏目:Biomedical Optics

基金项目:This work was supported by the National Natural Science Foundation of China (Nos. 61822505, 11774101, 61627827, and 81630046), the Science and Technology Planning Project of Guangdong Province, China (No. 2015B020233016), the China Postdoctoral Science Foundation (No. 2019M652943), the Natural Science Foundation of Guangdong Province, China (No. 2019A1515011399), and the Science and Technology Program of Guangzhou (No. 2019050001).

收稿日期:2020-05-18

录用日期:2020-06-28

网络出版日期:2020-08-28

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王新坤:MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
熊科迪:MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
金鑫:MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
杨思华:MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China;Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China

联系人作者:熊科迪(xiongkd2012@163.com)

备注:This work was supported by the National Natural Science Foundation of China (Nos. 61822505, 11774101, 61627827, and 81630046), the Science and Technology Planning Project of Guangdong Province, China (No. 2015B020233016), the China Postdoctoral Science Foundation (No. 2019M652943), the Natural Science Foundation of Guangdong Province, China (No. 2019A1515011399), and the Science and Technology Program of Guangzhou (No. 2019050001).

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引用该论文

Xinkun Wang, Kedi Xiong, Xin Jin, Sihua Yang, "Tomography-assisted Doppler photoacoustic microscopy: proof of concept," Chinese Optics Letters 18(10), 101702 (2020)

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