US 12,440,187 B2
Elastography device and method
Laurent Sandrin, Bourg-la-Reine (FR); and Stéphane Audiere, Paris (FR)
Assigned to ECHOSENS SA, Paris (FR)
Filed by ECHOSENS, Paris (FR)
Filed on May 15, 2023, as Appl. No. 18/317,401.
Prior Publication US 2024/0382177 A1, Nov. 21, 2024
Int. Cl. A61B 8/00 (2006.01); G01S 7/52 (2006.01)
CPC A61B 8/485 (2013.01) [A61B 8/543 (2013.01); G01S 7/52042 (2013.01); A61B 8/463 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An elastography device comprising:
a probe including a low-frequency vibrator configured to generate a transient low-frequency mechanical pulse in a body of a subject and at least one transducer configured to emit ultrasounds, the probe being further configured to acquire echo signals to track a propagation of the transient low-frequency mechanical pulse in the body of the subject;
an electronic unit adapted to determine a plurality of measurements of a mechanical property of a region of the body of the subject using the acquired echo signals, said region being a liver or a spleen, the electronic unit being further adapted to receive a cardiac signal related to a cardiac activity of the subject,
wherein at least one measurement of the mechanical property of the liver or the spleen among the plurality of measurements of the mechanical property is determined upon detection of an event related to the cardiac signal such that the at least one measurement of the mechanical property (a) occurs at least between a P wave and a T wave of a cardiac cycle of the subject or (b) is determined at a time at which a corresponding event related to the cardiac signal is detected delayed by a temporal offset which varies over time.