Ultrasonic quantification of valvular regurgitant blood flow
US6719697B2 · kind B2 · utility
11Cited by
10References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Valvular regurgitation is assessed by identifying a characteristic regurgitation jet in a colorflow image. An M-line is placed over the region of regurgitation and Doppler M-mode information is acquired from the flow convergence region adjacent the regurgitant orifice. The Doppler M-mode information, acquired at a higher acquisition rate than the colorflow frame rate, is used to produce a measure of the regurgitant flow rate and volume through the orifice. The flow rate can be used with velocity data acquired during the regurgitation event to produce a dynamic estimate of the size of the regurgitant valve orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.