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- W4385186885 abstract "Capillary Refill Time (CRT) assesses peripheral perfusion in resource-limited settings. However, the repeatability and reproducibility of CRT measurements are limited for individuals with darker skin. This paper presents quantitative CRT measurements demonstrating good performance and repeatability across all Fitzpatrick skin phototypes. The study involved 22 volunteers and utilized controlled compression at 7 kPa, an RGB video camera, and cocircular polarized white LED light. CRT was determined by calculating the time constant of an exponential regression applied to the mean pixel intensity of the green (G) channel. An adaptive algorithm identifies the optimal regression region for noise reduction, and flags inappropriate readings. The results indicate that 80% of the CRT readings fell within a 20% range of the expected CRT value. The repetition standard deviation was 17%. These findings suggest the potential for developing reliable and reproducible quantitative CRT methods for robust measurements in patient triage, monitoring, and telehealth applications." @default.
- W4385186885 created "2023-07-25" @default.
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- W4385186885 date "2023-08-10" @default.
- W4385186885 modified "2023-09-27" @default.
- W4385186885 title "Skin‐color‐independent robust assessment of capillary refill time" @default.
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- W4385186885 doi "https://doi.org/10.1002/jbio.202300063" @default.
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