Ultrasound imaging of calculi

Details Ultrasound imaging of calculi Ultrasound imaging of calculi

1986-10-06

1988-10-11

Jawerski, Francis J.

Surgery

Truss

Pad

A61B 1000

Patent

active

047763426

ABSTRACT:
During ultrasound checking of the results of lithotrity performed on biliary calculi, it is difficult to distinguish a calculus from crush. This problem is mitigated in accordance with the invention in that the ultrasound transducer (6) used for performing the ultrasound observation first receives a comparatively high electric power for a comparatively long period of time. As a result, the biliary calculus (4) or the crush is stirred up in the gallbladder (3); the size of the particles can be determined from the differences in behavior during settling in the gallbladder.

REFERENCES:
patent: 4617931 (1986-10-01), Dory
patent: 4620545 (1986-11-01), Shene et al.
patent: 4658828 (1987-04-01), Dory

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