The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment

Weirong Mo, Rachit Mohan, Weizhi Li, Xu Zhang, Eric W. Sellke, Wensheng Fan, J. Michael Dimaio, Jeffery E. Thatcher

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

We present a non-contact, reflective photoplethysmogram (PPG) imaging method and a prototype system for identifying the presence of dermal burn wounds during a burn debridement surgery. This system aims to provide assistance to clinicians and surgeons in the process of dermal wound management and wound triage decisions. We examined the system variables of illumination uniformity and intensity and present our findings. An LED array, a tungsten light source, and eventually high-power LED emitters were studied as illumination methods for our PPG imaging device. These three different illumination sources were tested in a controlled tissue phantom model and an animal burn model. We found that the low heat and even illumination pattern using high power LED emitters provided a substantial improvement to the collected PPG signal in our animal burn model. These improvements allow the PPG signal from different pixels to be comparable in both time-domain and frequency-domain, simplify the illumination subsystem complexity, and remove the necessity of using high dynamic range cameras. Through the burn model output comparison, such as the blood volume in animal burn data and controlled tissue phantom model, our optical improvements have led to more clinically applicable images to aid in burn assessment.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
PublisherSPIE
Volume9303
ISBN (Print)9781628413939
DOIs
StatePublished - 2015
EventPhotonic Therapeutics and Diagnostics XI - San Francisco, United States
Duration: Feb 7 2015Feb 8 2015

Other

OtherPhotonic Therapeutics and Diagnostics XI
CountryUnited States
CitySan Francisco
Period2/7/152/8/15

Fingerprint

Photoplethysmography
Lighting
Imaging systems
illumination
Wounds and Injuries
Light emitting diodes
animals
Animals
light emitting diodes
emitters
Animal Models
Tissue
blood volume
Imaging techniques
surgeons
Skin
Tungsten
Triage
Debridement
Blood Volume

Keywords

  • Illumination
  • Imaging
  • Infrared
  • Medical imaging
  • Non-invasive
  • Photoplethysmography
  • Tissue phantom

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Mo, W., Mohan, R., Li, W., Zhang, X., Sellke, E. W., Fan, W., ... Thatcher, J. E. (2015). The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 9303). [93030M] SPIE. https://doi.org/10.1117/12.2080699

The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment. / Mo, Weirong; Mohan, Rachit; Li, Weizhi; Zhang, Xu; Sellke, Eric W.; Fan, Wensheng; Dimaio, J. Michael; Thatcher, Jeffery E.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 9303 SPIE, 2015. 93030M.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mo, W, Mohan, R, Li, W, Zhang, X, Sellke, EW, Fan, W, Dimaio, JM & Thatcher, JE 2015, The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 9303, 93030M, SPIE, Photonic Therapeutics and Diagnostics XI, San Francisco, United States, 2/7/15. https://doi.org/10.1117/12.2080699
Mo W, Mohan R, Li W, Zhang X, Sellke EW, Fan W et al. The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 9303. SPIE. 2015. 93030M https://doi.org/10.1117/12.2080699
Mo, Weirong ; Mohan, Rachit ; Li, Weizhi ; Zhang, Xu ; Sellke, Eric W. ; Fan, Wensheng ; Dimaio, J. Michael ; Thatcher, Jeffery E. / The importance of illumination in a non-contact photoplethysmography imaging system for burn wound assessment. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 9303 SPIE, 2015.
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