Ultrasound process for the determination of the location of a parietal surface in a tissue and of the absolute radius of an artery, and ultrasound apparatus for carrying out such process
US6358206B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1999 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Dec 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/89
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasound process and apparatus for determining the location of an ultrasonic homogeneity discontinuity called parietal surface situated in a tissue from a radio-frequency signal (y(z)) function of digital depths along an excitation line (Z) crossing the parietal surface. The process and apparatus includes filtering the radio-frequency signal in order to provide a tissue signal (e(z)) representative of tissue scatterers, apart from a radio-frequency excitation signal. Also, filtering the tissue signal (e(z)) in order to provide a variance amplitude signal (S(z)) as a function of the digital depths on the excitation line wherefrom the corresponding parietal surface digital depth is determined. This process is used to estimate an artery radius from the digital depths of the arterial walls on the excitation line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.