The Commonwealth of Australia

The Commonwealth of Australia Care of the Department of Health

Commonwealth Scientific and Industrial Research Organisation

The Commonwealth of Australia C/-the Department of Health

The Commonwealth of Australia, C/o Dept. of Health

The Commonwealth of Australia, C/o the Department of Health

Commonwealth of Australia, the Department of Health

George Kossoff

David E Robinson

David A Carpenter

Jack Jellins

Method and apparatus for ultrasonic beam compensation

A rotating scanner for use in ultrasonic echoscopy has a linearly scanned transducer arrangement, for transmitting beams of ultrasonic energy into an object (and receiving reflected ultrasonic echoes from the object). The transducer arrangement is rotated about an axis passing through the center or one end of the linear scan. The linear scanning may be mechanical scanning, or by electronic switching of an array of transducer elements.

Rotating ultrasonic scanner

Signal processing equipment for ultrasonic visualization

Apparatus for the ultrasonic examination of an object, comprises:

Ultrasonic transducer array

A method of displaying information obtained by pulse-echo ultrasonic examination of an object, particularly in medical diagnostic examination, comprises forming a first display representing the positions of acoustic impedance discontinuities within the object and simultaneously incorporating in the display other parameters relating to the object.

Ultrasonic echogram display

Apparatus for the pulse-echo ultrasonic examination of an object comprised f transducer means for transmitting pulses of ultrasonic energy and receiving reflected echoes of said pulses immersed in a coupling medium contained within a housing, the pulses being transmitted and echoes received through an aperture in the housing which may be covered with a flexible coupling membrane.

Method and apparatus for ultrasonic examination

Apparatus for the pulse-echo ultrasonic examination of an object comprised of transducer means for transmitting pulses of ultrasonic energy and receiving reflected echoes of said pulses immersed in a coupling medium contained within a housing, the pulses being transmitted and echoes received through an aperture in the housing which may be covered with a flexible coupling membrane and the housing including a storage header tank open to the atmosphere to maintain the pressure to the coupling medium on the membrane constant during flexing of the membrane.

Apparatus for ultrasonic examination

A technique of displaying information obtained by ultrasonic echoscopic examination of an object which comprises the steps of transmitting pulses of ultrasonic energy along a plurality of beams into the object and receiving echoes of said pulses reflected along the beams by acoustic impedance discontinuities within the object, the beams being directed from a plurality of spaced positions relative to the object and along a plurality of beam directions at each position, comprises forming a first display of information representative of the position of acoustic impedance discontinuities within the object from the echoes received along the plurality of beams as a compound scan of the object, and forming a second display of information from echoes received along selected beams of the plurality of beams as a simple scan of the object.

Simultaneous display of compound and simple ultrasound scans

Apparatus for the ultrasonic examination of an object comprises:

Ultrasonic beam scanning

A method of pulse-echo ultrasonic examination of an object particularly in medical diagnostic examination, comprises the stepwise increase of the gain of the equipment to compensate for loss of energy as echoes are received from reflecting surfaces deeper within the object and cyclic alteration of the gain at each step.

Apparatus for ultrasonic examination of objects, particularly in medical gnostic examination, incorporates means for focusing portions of the beam of ultrasonic pulses generated by a transducer at a plurality of distances from the transducer to reduce the width of the beam over a large distance.

Ultrasonic beam forming technique

An apparatus for the pulse-echo ultrasonic examination, particularly in medical diagnostic examination, is comprised of a plurality of transducers spaced around the object to be examined, each of the transducers being steerable to direct pulses of ultrasonic energy into the object and to receive echoes in a plurality of angular directions, and means to move the plurality of transducers relative to the object during examination of the object.

Moving ultrasonic transducer array

A method of pulse-echo ultrasonic examination of an object, particularly in medical diagnostic examination, to measure flow of liquid in a vessel within the object comprises determining the dimensions and orientation of the vessel and the shift in frequency of ultrasonic echoes due to flow of liquid in the vessel and correlating to obtain a quantitative measurement of the flow of liquid.

Measurement of liquid flow

Apparatus for pulse-echo ultrasonic examination, particularly in medical diagnostic examination, is comprised of a plurality of transducers spaced at fixed positions around the object to be examined, each of the transducers being steerable to direct pulses of ultrasonic energy into the object and to receive echoes in a plurality of angular directions from the fixed position.

Scanning ultrasonic inspection method and apparatus

Apparatus for ultrasonic examination of objects, particularly in medical diagnostic examination, is comprised of a phased array transducer capable of focusing the beam of ultrasonic pulses in the longitudinal plane of the transducer, and focusing means to focus the dimensions of the beam normal to the longitudinal plane.

Growing community of inventors

Northbridge, Australia

George Kossoff