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A new beamforming technique for ultrasonic imaging systems



A new beamforming technique for ultrasonic imaging systems



Ultrasonics 38(1-8): 156-160



We propose a simple, versatile and inexpensive beamforming method that performs the aperture windowing of an ultrasonic transducer array in the transmit mode, without modifying the driver voltage, but simply controlling the length of the electric pulse driving the array elements. A conversion formula has been determined that permits us to compute, for a desired emitted pulse amplitude, the corresponding driving pulse length to be applied. Any shading function can be implemented over any type of transducer array, using very low-cost hardware. Computer simulations and experimental measurements, with a 3.8 MHz convex array, confirm the effectiveness of this approach in enhancing the contrast resolution, since the off-axis intensity in the radiated beam pattern is largely reduced.

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Accession: 045079020

Download citation: RISBibTeXText

PMID: 10829649

DOI: 10.1016/s0041-624x(99)00080-3


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