ArticleAdvances in experimental medicine and biology2022
Feasibility Study of Remote Contactless Perfusion Imaging with Consumer-Grade Mobile Camera.
Article in Advances in experimental medicine and biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Observation of blood motion in the internal jugular vein by contact and contactless photoplethysmography during physiological testing: case studies.Biomedical optics express · 2024Article
- Feasibility of Specular Reflection Imaging for Extraction of Neck Vessel Pressure Waveforms.Frontiers in bioengineering and biotechnology · 2022Article
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Authors and funding
3 authors.
Funding
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Abstract
A non-invasive, contactless, inexpensive and easy-to-operate perfusion imaging method using a consumer-grade mobile camera (iPhone 8) developed in our group can visualise blood flow in tissue.
methodsIschemia was induced in one hand using a blood pressure cuff inflated over the systolic blood pressure to stop the blood flow. Using an iPhone, data was collected from 5 subjects, beginning with no occlusion (a baseline), followed by one hand occluded, and then release of the occlusion to restore blood circulation. This protocol was repeated for each hand for a total of 10 videos. The data were analysed to extract the oscillating and quasi-constant components of the photoplethysmogram signal representing blood flow. In addition, we introduced a scoring parameter to reflect perfusion (i.e., perfusion score).
resultsThe proposed perfusion score was used to create a pseudo colour map of perfusion across the protocol, demonstrating the ability to detect ischemia caused by occlusion. The difference in perfusion score was statistically significant between ischemia and baseline/recovery.
conclusionsPilot results on healthy volunteers demonstrate the feasibility of perfusion imaging using a consumer-grade camera. A further developed method can be used to assess the viability of transplanted tissue.
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