Ultrasound apparatus for medical examinations

Details Ultrasound apparatus for medical examinations Ultrasound apparatus for medical examinations

1982-03-02

1984-03-06

Kamm, William G.

Surgery

Truss

Pad

A61B 1000

Patent

active

044347995

ABSTRACT:
The apparatus incorporates an ultrasonic wave-generating transducer for providing ultrasonic waves, a first and a second ultrasound window, a first guiding device for guiding the ultrasonic waves to the first window, an ultrasonic receiving transducer for transforming an acoustic image field received from the second window into electrical signals, and a second guiding device for guiding ultrasound transmitted through the second window to the receiving transducer. The ultrasound windows define an examination gap for insonifying a patient's organ positioned therein. The apparatus further incorporates a curved mirror for focusing the acoustic image field received from the gap onto the receiving transducer. The mirror is attached to a rocking device. Thus, the curved mirror is also used for scanning or sweeping the acoustic image field across the receiving transducer. Thus, an image of the object plane under examination is obtained. Preferably, the curved mirror may be filled with a substance having a low velocity of ultrasound as compared to the adjacent fluid medium contained in the second guiding device. This design eliminates the need for a large number of refractive and reflective surfaces, thereby reducing artifacts in the image.

REFERENCES:
patent: 3251219 (1966-05-01), Hertz et al.
patent: 3765403 (1973-10-01), Brenden
patent: 3937066 (1976-02-01), Green et al.
patent: 4137777 (1979-02-01), Haverl et al.
patent: 4248090 (1981-02-01), Glenn
patent: 4274421 (1981-06-01), Dory
"Acoustical Holography", vol. 5, pp. 493-503, 1974.
"Acoustical Holography", vol. 6, pp. 1-13, 1976.

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