Optical measurement of nasal swellings.
Level II
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- Record sourced from PubMed, PMID 15376516.
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Abstract
We introduce a new optical method to noninvasively and continuously measure the swelling process of the nasal mucosa whereby we use light of different wavelengths in the red and near-infrared range which is transilluminated through the nasal tissue and whose extinction is recorded as a function of time. From the temporal and spectral extinction data, we are able to extract characteristic parameters that describe the swelling process quantitatively by means of a regression-type parameter estimation algorithm. The method has been applied to the nasal allergen provocation test and verified on a limited number of volunteers.
Medical subject headings
- Diagnosis, Computer-Assisted
- Edema
- Nasal Provocation Tests
- Nose Diseases
- Optics and Photonics
- Spectrophotometry, Infrared
- Transducers