Method and apparatus for examining a tissue using the spectral wing emission therefrom induced by visible to infrared photoexcitation
US6665556B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0638
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method and an apparatus for examining a tissue using the spectral wing emission therefrom induced by visible to infrared photoexcitation. In one aspect, the method is used to characterize the condition of a tissue sample and comprises the steps of (a) photoexciting the tissue sample with substantially monochromatic light having a wavelength of at least 600 nm; and (b) using the resultant far red and near infrared spectral wing emission (SW) emitted from the tissue sample to characterize the condition of the tissue sample. In one embodiment, the substantially monochromatic photoexciting light is a continuous beam of light, and the resultant steady-state far red and near infrared SW emission from the tissue sample is used to characterize the condition of the tissue sample. In another embodiment, the substantially monochromatic photoexciting light is a light pulse, and the resultant time-resolved far red and near infrared SW emission emitted from the tissue sample is used to characterize the condition of the tissue sample. In still another embodiment, the substantially monochromatic photoexciting light is a polarized light pulse, and the parallel and perpendicular components of the re…
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