Ultrasonic diagnostic apparatus
US5515857A · kind A · utility
22Cited by
8References
57Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1994 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/899
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A bloodstream velocity image is formed by scanning a two-dimensional region including a blood vessel in a body to be examined with an ultrasonic wave. A velocity profile is formed by distributing either one of average velocities and maximum velocities of bloodstream velocities at a plurality of positions arranged along a first direction, along a second direction which is perpendicular to the first direction and extending across the blood vessel. A bloodstream volume is calculated from the velocity profile and a blood vessel diameter. Thus, an error caused by movement of a blood vessel accompanying pulsation can be decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.