Method and apparatus for ultrasonically scanning a subject with

Details Method and apparatus for ultrasonically scanning a subject with Method and apparatus for ultrasonically scanning a subject with

1985-09-12

1987-09-08

Birmiel, Howard A.

Measuring and testing

Vibration

By mechanical waves

128660, 367103, G01N 2900

Patent

active

046915702

ABSTRACT:
A method and apparatus for ultrasonically scanning a subject with an ultrasonic head having a number of side-by-side transducer elements employing an increasing number of ultrasound transducer elements, successively activated, to obtain reception from different depth ranges. The ultrasound aperture is thereby enlarged in steps. The center of gravity of the aperture moves across the ultrasonic transducer elements in the scan direction, with one corner point remaining fixed. During such movement, the directional characteristic of the activated aperture is selected such that a sawtooth scan curves results, substantially approximating a straight line scan. All ultrasonic transducer elements are activated in this manner when scanning a greatest scan depth of the subject. The apparatus includes a channel for each transducer element, each channel including a depth compensation amplifier, a controlled switch device, and a delay device, with each of the channels being connected to a summing element at their outputs.

REFERENCES:
patent: 4235111 (1980-11-01), Hassler
patent: 4481823 (1984-11-01), Alais
patent: 4604897 (1986-08-01), Saglio
"Matched Gaussian Apodization of Pulsed Acoustic Phased Arrays Duerinckx, Acoustical Imaging., vol. 10, 1980.
"Generalized Shading Formula From A Given Line Shading", Lockhart et al., J. Acoust. Soc. Am 68(4), Oct. 1980.

Affiliated with

Also associated with

Rating

Method and apparatus for ultrasonically scanning a subject with does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for ultrasonically scanning a subject with , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for ultrasonically scanning a subject with will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2151987