Apparatus and method for high resolution temperature measurement and for hyperthermia therapy
US7717618B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Mar 19, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00547
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for increasing the resolution of a linear array of fiber Bragg gratings by applying a plastic coating having a high CTE over the optical fiber. Apparatus and method for determining the temperature of each of a succession of points along a tissue portion during hyperthermia treatment includes an optical fiber with a succession of closely spaced fiber Bragg gratings. Each grating is responsive to a different wavelength and is sensitive to ambient temperature to change that wavelength as a function of temperature. A tunable laser operative continuously over a range of wavelengths including those to which the gratings respond is used to interrogate the gratings. Sensitivity-enhancing coatings are used on the fibers and the lasers are tuned over very short time cycles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.