Device for scanning objects by means of ultrasound echography

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: (A) a transformation device (110) for transforming the echographic signal by calculation of the Mellin transform of this signal; (B) an arithmetic device (120) for calculating a correction function by transformation of the attenuation function; (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. (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 region scanned and/or data which are representative of the region scanned.