Ultrasonodiagnostic tomography apparatus

Details Ultrasonodiagnostic tomography apparatus Ultrasonodiagnostic tomography apparatus

1985-08-27

1990-12-04

Smith, Ruth S.

Surgery

Truss

Pad

73626, A61B 814

Patent

active

049745581

ABSTRACT:
In an ultrasonodiagnostic tomography apparatus for transmitting focused sound wave from a plurality of transducers forming an array to a predetermined focus point and for carrying out beam formation for receiving sound from said focus point with dynamic focusing, wherein the width of transmission beam at said focus point is controlled by means of said transducers so that the width of transmission beam at said focus point may be larger than the width of receiving beam from said focus point.

REFERENCES:
patent: 4145931 (1979-03-01), Tancrell
patent: 4235111 (1980-11-01), Hassler
patent: 4254662 (1981-03-01), Kuroda et al.
patent: 4307613 (1981-12-01), Fox
patent: 4368643 (1983-01-01), Tachita et al.

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