Methods and apparatus for calibrating spectral data
US7459696B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Apr 18, 2003 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Jan 23, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H50/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides methods for calibrating spectral data acquisition systems. These calibration methods produce spectral data sufficiently accurate for use in tissue classification algorithms. The invention improves the accuracy of spectral-based tissue classification schemes, in part, by properly accounting for spatial variations, instrument-to-instrument variations, and patient-to-patient variations in the acquisition of spectral data from tissue samples. Effects that are accounted for include, for example, stray light effects, electronic background effects, variation in light energy delivered to a tissue sample, spatial heterogeneities of the illumination source, chromatic aberrations of the scanning optics, variation in wavelength response of the collection optics, and efficiency of the collection optics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.