Variable origin-variable angle acoustic scanning method and appa

Details Variable origin-variable angle acoustic scanning method and appa Variable origin-variable angle acoustic scanning method and appa

1991-08-12

1993-08-17

Jaworski, Francis

Surgery

Truss

Pad

73625, A61B 800

Patent

active

052359867

ABSTRACT:
An acoustic scanning method and apparatus implemented by transmitting ultrasonic pressure waves and receiving return echoes on a set of spatially non-overlapping acoustic lines scanned along a curved linear transducer array with the active acoustic lines shifted and steered so that each acoustic line originates at an arbitrary point on and at an arbitrary angle to the face of the array. In a preferred embodiment, an extension of each acoustic line may also pass through a substantially common vertex that is a selectable distance behind the array to provide a field-of-view defined by the selectively variable location of the common vertex and the physical ends of the array, may use the entire transducer array in the near-field, has high quality resolution in both near and far fields, and may simultaneously transmit and receive two or more ultrasound beams from the same transducer aperture.

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