Respiratory Conditions – Noninvasive Optical Sensing

GASMAS (gas in scattering media absorption spectroscopy) is a noninvasive gas sensing technique. It’s becoming a valuable tool for diagnosing and monitoring neonatal respiratory conditions. Phantom models with attributes relevant to the clinical translation of GASMAS technology are necessary to comprehend the technique’s technical limitations and possible uses.

State-of-the-art phantoms have focused on the thorax’s optical properties and anthropomorphic geometry, contributing to the source-detector placement, design, and optimization. Lung phantom mimicking the alveolar anatomy is not a part of the existent models due to the inherent complexity of the tissue. Researchers have developed a simplified model that recreates inflated alveoli embedded in lung phantom to assess respiratory conditions.

The researchers modeled the optical properties and tissue structure from the respiratory zone. They used a simplified capillary array immersed in a controlled environment chamber at pulmonary temperature and RH. They have proven the feasibility of measuring volume changes with the GASMAS technique, stating a new possible application of GASMAS technology in respiratory treatment and diagnostics.

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