APPARAT TIL ULTRASONISK AFBILDNING

In ultrasonic imaging apparatus comprising a portable scanning module including a liquid-filled enclosure (51) having a window (52) through which a beam of ultrasonic energy from a transducer (80) scans a subject, the beam to and from the transducer (80) is focussed by means of a lens (90) having a...

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Bibliographische Detailangaben
1. Verfasser:	GLENN W E
Format:	Patent
Sprache:	dan
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEDICAL OR VETERINARY SCIENCE METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SOUND-PRODUCING DEVICES SURGERY TESTING
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Beschreibung
Zusammenfassung:	In ultrasonic imaging apparatus comprising a portable scanning module including a liquid-filled enclosure (51) having a window (52) through which a beam of ultrasonic energy from a transducer (80) scans a subject, the beam to and from the transducer (80) is focussed by means of a lens (90) having a thickness defined by a surface of revolution around the axis of the beam. The lens preferably has an elliptical periphery which matches the shape of the transducer. Scanning may be effected by reciprocating a reflector (70), as shown, or by reciprocating the transducer (80) in the absence of a reflector, the transducer then being mounted at the end of the portable scanner. In another form, the reflector is omitted, the ultrasonic energy from the transducer passing directly through the window (Figure 6, not shown) with scanning being effected by oscillation of the transducer.