Pointing error compensation in large aperture annular arrays

Details Pointing error compensation in large aperture annular arrays Pointing error compensation in large aperture annular arrays

1991-01-14

1992-11-24

Howell, Kyle L.

Surgery

Truss

Pad

12866009, 73620, 73633, A61B 800

Patent

active

051654148

ABSTRACT:
In ultrasonic apparatus has a large aperture annular transducer array which is mechanically rotated in a scanning motion. The ultrasound beam is electronically steered to compensate for angular position error caused by the scanning motion by means of preselected delay patterns to thereby produce an ultrasound beam which undergoes a discrete step scan pattern of an object of interest. Also disclosed is a method of manufacturing the transducer array which involves segmenting the transducer after assembling the transducer components.

REFERENCES:
patent: 4398422 (1983-08-01), Haerten
patent: 4722345 (1988-02-01), Ueno et al.
patent: 4896672 (1990-01-01), O'Toole
patent: 4932414 (1990-06-01), Coleman et al.

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