Ultrasound imaging with FM detection

Details Ultrasound imaging with FM detection Ultrasound imaging with FM detection

1983-09-30

1985-04-23

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

73606, 73633, 73642, 128660, G01N 2900

Patent

active

045121966

ABSTRACT:
An ultrasound transducer having an annular acoustic aperture is utilized in combination with an echo-ultrasound imaging system having an FM detector. The off-axis transfer function characteristics of the annular transducer substantially improve the lateral resolution of the imaging system as compared with prior art systems which utilized round or rectangular transducer apertures.

REFERENCES:
patent: 4138895 (1979-02-01), Mezrich
patent: 4227417 (1980-10-01), Glenn
patent: 4316390 (1982-02-01), Kretz

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