Interferometric technique for measuring cerebral blood flow using inexpensive CMOS sensors
US11980453B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2019 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | May 9, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosed embodiments provide a system that non-invasively analyzes blood flow in a sample of living tissue. During operation, the system obtains light from a temporally coherent source, and splits the obtained light between a reference path and a sample path. Next, the system multiply scatters light from the sample path by passing the light through the sample. The system then recombines light from the reference path and the multiply scattered light from the sample path. Next, the system uses a sensor array to detect an interference pattern resulting from the recombination. Finally, the system analyzes signals from the sensor array to determine a blood flow in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.