Abstract: An elastography device comprising: a probe that comprises a protruding part to be applied against the body of a subject, a low frequency vibrator arranged to move the protruding part, at least one ultrasound emitter and one ultrasound receiver; and an electronic unit. The electronic unit is adapted to alternatively control the elastography device so that it operates (a) in a guidance mode to determine whether the probe is correctly positioned in front of a region of the body to be probed to carry out a measurement of a mechanical property of the probed region and (b) in a measurement. In the guidance mode, the vibrator delivers a plurality of successive probing pulses (PRB), each being a transient, low frequency mechanical pulse, and the electronic unit determines a propagation quality indicator (Q) representative of an aptitude of the probed region to transmit the probing pulse.

Abstract: A multipulse elastography method for the quantitative measurement of at least one mechanical property of a viscoelastic medium having an ultrasonic signal after ultrasonic illumination, the method including defining characteristics of at least two mechanical pulses; generating the at least two mechanical pulses for which characteristics are defined in a viscoelastic medium; monitoring a propagation of at least two shear waves generated by the at least two mechanical pulses using acquisition and emission of ultrasonic signals, in the viscoelastic medium, and calculating at least one mechanical property of said viscoelastic medium using said acquisitions of said ultrasonic signals.

Abstract: An elastography device for quantitatively and/or qualitatively measuring the viscoelastic properties of any medium, includes a deformable tube for positioning the ultrasonic transducer located at the end of the deformable tube and for holding it so as to ensure, during at least one measurement, perpendicularity and contact between the ultrasonic transducer and the medium.

Abstract: A multipulse elastography method for the quantitative measurement of at least one mechanical property of a viscoelastic medium having an ultrasonic signal after ultrasonic illumination, the method including defining characteristics of at least two mechanical pulses; generating the at least two mechanical pulses for which characteristics are defined in a viscoelastic medium; monitoring a propagation of at least two shear waves generated by the at least two mechanical pulses using acquisition and emission of ultrasonic signals, in the viscoelastic medium, and calculating at least one mechanical property of said viscoelastic medium using said acquisitions of said ultrasonic signals.

Abstract: An elastography device for quantitatively and/or qualitatively measuring the viscoelastic properties of any medium, includes a deformable tube for positioning the ultrasonic transducer located at the end of the deformable tube and for holding it so as to ensure, during at least one measurement, perpendicularity and contact between the ultrasonic transducer and the medium.