Oximetry and blood flow in the retina

P. Lemaillet, A. Lompado, D. Duncan, Quan Dong Nguyen, J. C. Ramella-Roman

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

Abstract

We present the development of setup composed of a retinal oximeter and a blood velocimeter implemented on a regular fundus ophthalmoscope. The oximeter part can acquire nine wavelength-dependent sub-images of the patient fundus in a single snapshot. The fundus image is projected on a large format CCD by an array of nine lenses and wavelength selection is provided by a filter array. Higher wavelength images help establishing melanin absorption, which is further extrapolated to shorter wavelength and subtracted from the absorption images. The remaining shorter wavelength subimages are used measure the oxygen saturation in the retina by fitting oxy- and deoxy-hemoglobin absorption curves. The setup was calibrated with optical phantoms of know optical properties. The velocimeter part of the setup relies on following clusters of erythrocytes to assess the velocity of blood.

Original languageEnglish (US)
Title of host publication26th Southern Biomedical Engineering Conference SBEC 2010
Pages321-324
Number of pages4
DOIs
StatePublished - Nov 8 2010
Event26th Southern Biomedical Engineering Conference, SBEC 2010 - College Park, MD, United States
Duration: Apr 30 2010May 2 2010

Publication series

NameIFMBE Proceedings
Volume32 IFMBE
ISSN (Print)1680-0737

Conference

Conference26th Southern Biomedical Engineering Conference, SBEC 2010
CountryUnited States
CityCollege Park, MD
Period4/30/105/2/10

Fingerprint

Blood
Wavelength
Oximeters
Velocimeters
Hemoglobin
Hemoglobins
Melanin
Wave filters
Melanins
Charge coupled devices
Lenses
Optical properties
Oxygen

Keywords

  • Oxygen saturation
  • blood flow
  • spectroscopy

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

Cite this

Lemaillet, P., Lompado, A., Duncan, D., Nguyen, Q. D., & Ramella-Roman, J. C. (2010). Oximetry and blood flow in the retina. In 26th Southern Biomedical Engineering Conference SBEC 2010 (pp. 321-324). (IFMBE Proceedings; Vol. 32 IFMBE). https://doi.org/10.1007/978-3-642-14998-6_82

Oximetry and blood flow in the retina. / Lemaillet, P.; Lompado, A.; Duncan, D.; Nguyen, Quan Dong; Ramella-Roman, J. C.

26th Southern Biomedical Engineering Conference SBEC 2010. 2010. p. 321-324 (IFMBE Proceedings; Vol. 32 IFMBE).

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

Lemaillet, P, Lompado, A, Duncan, D, Nguyen, QD & Ramella-Roman, JC 2010, Oximetry and blood flow in the retina. in 26th Southern Biomedical Engineering Conference SBEC 2010. IFMBE Proceedings, vol. 32 IFMBE, pp. 321-324, 26th Southern Biomedical Engineering Conference, SBEC 2010, College Park, MD, United States, 4/30/10. https://doi.org/10.1007/978-3-642-14998-6_82
Lemaillet P, Lompado A, Duncan D, Nguyen QD, Ramella-Roman JC. Oximetry and blood flow in the retina. In 26th Southern Biomedical Engineering Conference SBEC 2010. 2010. p. 321-324. (IFMBE Proceedings). https://doi.org/10.1007/978-3-642-14998-6_82
Lemaillet, P. ; Lompado, A. ; Duncan, D. ; Nguyen, Quan Dong ; Ramella-Roman, J. C. / Oximetry and blood flow in the retina. 26th Southern Biomedical Engineering Conference SBEC 2010. 2010. pp. 321-324 (IFMBE Proceedings).
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