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Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images
We propose the visualization of venous compliance (VC) using a digital red-green-blue (RGB) camera. The new imaging method, which transforms RGB values into VC, combines VC evaluation with blood concentration estimation from the RGB values of each pixel. We evaluate a non-contact plethysmography (NC...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5190977/ https://www.ncbi.nlm.nih.gov/pubmed/27897981 http://dx.doi.org/10.3390/s16121996 |
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author | Nakano, Kazuya Aoki, Yuta Satoh, Ryota Suzuki, Hiroyuki Nishidate, Izumi |
author_facet | Nakano, Kazuya Aoki, Yuta Satoh, Ryota Suzuki, Hiroyuki Nishidate, Izumi |
author_sort | Nakano, Kazuya |
collection | PubMed |
description | We propose the visualization of venous compliance (VC) using a digital red-green-blue (RGB) camera. The new imaging method, which transforms RGB values into VC, combines VC evaluation with blood concentration estimation from the RGB values of each pixel. We evaluate a non-contact plethysmography (NCPG) system for VC based on comparisons with conventional strain gauge plethysmography (SPG). We conduct in vivo measurements using both systems and investigate their differences by evaluating the VC. The results show that the two methods measure different blood vessels and that errors caused by interstitial fluid accumulation are negligible for the NCPG system, whereas SPG is influenced by such errors. Additionally, we investigate the relationship between VC and physical activity using NCPG. |
format | Online Article Text |
id | pubmed-5190977 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-51909772017-01-03 Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images Nakano, Kazuya Aoki, Yuta Satoh, Ryota Suzuki, Hiroyuki Nishidate, Izumi Sensors (Basel) Article We propose the visualization of venous compliance (VC) using a digital red-green-blue (RGB) camera. The new imaging method, which transforms RGB values into VC, combines VC evaluation with blood concentration estimation from the RGB values of each pixel. We evaluate a non-contact plethysmography (NCPG) system for VC based on comparisons with conventional strain gauge plethysmography (SPG). We conduct in vivo measurements using both systems and investigate their differences by evaluating the VC. The results show that the two methods measure different blood vessels and that errors caused by interstitial fluid accumulation are negligible for the NCPG system, whereas SPG is influenced by such errors. Additionally, we investigate the relationship between VC and physical activity using NCPG. MDPI 2016-11-25 /pmc/articles/PMC5190977/ /pubmed/27897981 http://dx.doi.org/10.3390/s16121996 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nakano, Kazuya Aoki, Yuta Satoh, Ryota Suzuki, Hiroyuki Nishidate, Izumi Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title | Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title_full | Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title_fullStr | Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title_full_unstemmed | Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title_short | Visualization of Venous Compliance of Superficial Veins Using Non-Contact Plethysmography Based on Digital Red-Green-Blue Images |
title_sort | visualization of venous compliance of superficial veins using non-contact plethysmography based on digital red-green-blue images |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5190977/ https://www.ncbi.nlm.nih.gov/pubmed/27897981 http://dx.doi.org/10.3390/s16121996 |
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