A probe for transient elastography includes a probe casing, at least one ultrasound transducer having a symmetry axis, a vibrator located inside the probe casing, a position sensor coupled to the probe casing, the position sensor being arranged to measure the displacement of the probe, wherein the vibrator is arranged to induce a movement of the probe casing along a predefined axis, the predefined axis being the symmetry axis of the ultrasound transducer. The ultrasound transducer is bound to the probe casing with no motion of the ultrasound transducer with respect to the probe casing, and the probe includes a feedback circuit including the position sensor and a control loop and configured to use the displacement of the probe as a feedback signal and to control the movement of the vibrator inside the probe casing and the shape of a low frequency pulse applied by the probe.