Journal
PHOTOACOUSTICS
Volume 23, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.pacs.2021.100282
Keywords
Photoacoustic microscopy; Blood vessel; Hemodynamics; Pulsation; Perfusion; Oxygen saturation; Digital vasculature
Categories
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education and ICT [2020R1A6A1A03047902, 2019R1A2C2006269, 2020R1C1C10135 49]
- National R&D Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2020M3H2A1078045]
- Korea Institute for Advancement of Tech-nology (KIAT) - Korea Government (MOTIE) [P0008763]
- BK21 FOUR project
- Advanced Optowave
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2020R1A6A1A03047902, 2019R1A2C2006269, 2020R1C1C10135 49]
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By utilizing high-resolution photoacoustic monitoring of vascular dynamics in human fingers, important information can be obtained for measuring heart rate, oxygen consumption, and blood perfusion in peripheral vascular examination.
Functional imaging of microvascular dynamics in extremities delivers intuitive information for early detection, diagnosis, and prognosis of vascular diseases. High-resolution and high-speed photoacoustic microscopy (PAM) visualizes and measures multiparametric information of microvessel networks in vivo such as morphology, flow, oxygen saturation, and metabolic rate. Here, we demonstrate high-resolution photoacoustic monitoring of vascular dynamics in human fingers. We photoacoustically monitored the position displacement of blood vessels associated with arterial pulsation in human fingers. Then, during and after arterial occlusion, we photoacoustically quantified oxygen consumption and blood perfusion in the fingertips. The results demonstrate that high-resolution functional PAM could be a vital tool in peripheral vascular examination for measuring heart rate, oxygen consumption, and/or blood perfusion.
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