Development of a 3-dimensional tissue lung phantom of a preterm infant for optical measurements of oxygen—Laser-detector position considerations

Research output: Contribution to journalArticle

Abstract

There is a need to further improve the clinical care of our most vulnerable patients—preterm infants. Novel diagnostic and treatment tools facilitate such advances. Here, we evaluate a potential percutaneous optical monitoring tool to assess the oxygen and water vapor content in the lungs of preterm babies. The aim is to prepare for further clinical studies by gaining a detailed understanding of how the measured light intensity and gas absorption signal behave for different possible geometries of light delivery and receiver. Such an experimental evaluation is conducted for the first time utilizing a specially developed 3-dimensional-printed optical phantom based on a geometry model obtained from computer tomography images of the thorax (chest) of a 1700-g premature infant. The measurements yield reliable signals for source–detector distances up to about 50 mm, with stronger gas absorption signals at long separations and positions related to the lower part of the lung, consistent with a larger relative volume of this. The limitations of this study include the omission of scattering tissue within the lungs and that similar optical properties are used for the wavelengths employed for the 2 gases, yielding no indication on the optimal wavelength pair to use.

Details

Authors
Organisations
External organisations
  • Gasporox AB
  • Tyndall National Institute
  • University College Cork
  • Lund University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Medical Laboratory and Measurements Technologies

Keywords

  • premature infants, respiratory distress syndrome, tissue phantom, tunable diode laser absorption spectroscopy
Original languageEnglish
Article numbere201700097
JournalJournal of Biophotonics
Volume11
Issue number3
Publication statusPublished - 2018 Mar 1
Publication categoryResearch
Peer-reviewedYes

Related research output

Larsson, J., 2019 Sep 3, Lund: Department of Physics, Lund University. 165 p.

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