US 11,879,973 B2
Echo-based focusing correction
Oleg Prus, Haifa (IL); and Yoav Levy, Hinanit (IL)
Assigned to INSIGHTEC, LTD., Tirat Carmel (IL)
Appl. No. 17/312,145
Filed by INSIGHTEC, LTD., Tirat Carmel (IL)
PCT Filed Dec. 18, 2019, PCT No. PCT/IB2019/001340
§ 371(c)(1), (2) Date Jun. 9, 2021,
PCT Pub. No. WO2020/128615, PCT Pub. Date Jun. 25, 2020.
Claims priority of provisional application 62/781,258, filed on Dec. 18, 2018.
Prior Publication US 2022/0043143 A1, Feb. 10, 2022
Int. Cl. G01S 15/89 (2006.01); A61B 8/00 (2006.01)
CPC G01S 15/892 (2013.01) [A61B 8/54 (2013.01)] 24 Claims
OG exemplary drawing
1. A system for focusing an ultrasound transducer, the system comprising:
an ultrasound transducer comprising a plurality of transducer elements for providing sonications to at least one target region; and
a controller configured to:
(a) cause the transducer to generate a plurality of sonications to the at least one target region;
(b) measure a reflection signal of each of the sonications off at least one transient acoustic reflector located in proximity to the at least one target region;
(c) select the measured reflection signals based at least in part on: (i) an amplitude ratio of processed signals associated with sets of consecutive measurements, (ii) a distance between the at least one of the t ransducer elements and the at least one target region, (iii)a noise level associated with the reflection signals, or (iv) consistency therebetween; and
(d) based at least in part on the selected reflection signals, adjust a parameter value associated with at least one of the transducer elements so as to improve an ultrasound focus at the target region.