Device for scanning objects by means of ultrasound echography
US4762132A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1986 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/8977
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for scanning objects, notably biological tissues, by means of ultrasound echography, which device includes at least one ultrasound transducer (10) which is connected to a transmitter stage (20) for the repeated transmission of ultrasound waves to the object to be examined, and to a receiver stage for receiving the echoes reflected in the direction of the transducer. The device in accordance with the invention is characterized mainly in that the receiver stage includes: PA0 (A) a transformation device (110) for transforming the echographic signal by calculation of the Mellin transform of this signal; PA0 (B) an arithmetic device (120) for calculating a correction function by transformation of the attenuation function; PA0 (C) a processing device (130) which consists of a series connection of a multiplier circuit (131) for multiplying the respective output signals of the transformation devices (110) and (120) and a circuit (132) for calculating the inverse Mellin transform of the signal thus obtained. PA0 (D) a processing device (140) for processing the output signal of the arithmetic circuit (132) for calculating the inverse Mellin transform for the display of images of the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.