Ultrasonic compound scan with a rotating transducer

Details Ultrasonic compound scan with a rotating transducer Ultrasonic compound scan with a rotating transducer

G - Physics

01

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349/36

G01S 7/62 (2006.01) G01S 7/52 (2006.01) G01S 15/89 (2006.01) G10K 11/00 (2006.01) G10K 11/35 (2006.01)

Patent

CA 1252553

Abstract A method of and apparatus for producing an ultrasound cross-sectional picture of a body, in which method at least two different and partially overlapping sector scans of the body are carried out by the pulse-echo method, in one scanning plane and with a single ultrasound array, which is rotatable about an axis of rotation perpendicular to the scanning plane and which comprises at least a first and a second transducer, which transducers are disposed in spaced relationship along a circle which is situated in the scanning plane and which is concentric with the axis of rotation, the transducer array performing a rotary movement about the axis of rotation. In order to produce a real-time display of a relat- ively large scanned area, out of the at least two different scans, one is performed with the first trans- ducer and the other with the second (121, 122), each transducer being used both for the emission of ultrasound pulses and for the reception of echo waves. The position of the axis of rotation (13) with respect to the body (11) remains unchanged during all the scans. Fig. 1

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