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- W2000700156 abstract "Laser speckle contrast analysis (LASCA) offers a non-contact, full-field, and real-time mapping of capillary blood flowand can be considered as an alternative method to Laser Doppler perfusion imaging (LDPI). Photoplethysmography(PPG) is well known technique for assessment of skin blood pulsations that can be related to blood flow. In recent yearsseveral studies have been done on development of non-contact PPG imaging (PPGI).LASCA and PPGI techniques are simpler and cheaper compared with LDPI. LASCA technique has been implemented inseveral commercial instruments. However, these systems are still too expensive and bulky to be widely available.Several optical techniques have found new implementations as connection kits for mobile phones thus offering low costscreening device.In this work we demonstrate simple implementation of LASCA and PPG imaging technique for primary low-costassessment of skin blood flow. Both devices comprise a widely available 1.3 mega pixel CMOS camera. Stabilized 650nm laser diode module is used for LASCA illumination, and white LEDs are illuminators for PPG imaging device.An arterial occlusion test was performed to test LASCA and PPGI imaging devices. An example of scratch color imageand corresponding blood flow map also was demonstrated. The results showed that both techniques can be used for fastmonitoring and mapping of skin blood flow and implemented as connection kits for smartphone." @default.
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- W2000700156 date "2013-03-06" @default.
- W2000700156 modified "2023-09-23" @default.
- W2000700156 title "LASCA and PPG imaging for non-contact assessment of skin blood supply" @default.
- W2000700156 doi "https://doi.org/10.1117/12.2007375" @default.
- W2000700156 hasPublicationYear "2013" @default.
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