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This technology makes a circuit-level column-row-parallel architecture of multiple ultrasonic transceivers to form a grid. A variety of aperture configurations is achieved through selective beam-forming including plane-wave coherent computing, checkerboard patterns, and annular rings. The flexibility in 3D beam formation allows fine granularity in imaging based on organ-specific requirements. Miniaturization into an integrated circuit is possible by using capacitive micro-machined ultrasonic transducers or piezoelectric micro-machined ultrasonic transducers.