Method and system of quantitative intravascular optical coherence tomography
US11610345B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2021 |
| Grant date | Mar 21, 2023 |
| Priority date | — |
| Expiry date | Sep 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/456
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to a method and a system of quantitative intravascular optical coherence tomography. The method includes: acquiring and graying an intravascular optical coherence tomography cross-sectional image, and converting it into a polar coordinate view; calculating a confocal function value and a sensitivity function value according to parameters of the imaging system; establishing a model of an intensity of a backscattered signal being attenuated depending on the detection depth, according to the confocal function value and the sensitivity function value to obtain a theoretical value of the backscattered signal; determining a measured value of the backscattered signal; constructing an error function according to the theoretical value and the corresponding measured value; minimizing the error function to determine a light attenuation coefficient corresponding to each polar coordinate; and determining a spatial distribution diagram of the light attenuation coefficient according to the light attenuation coefficient corresponding to each polar coordinate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.