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A planar ultrasound phased array comprised of 32×32 square elements. The size of the array is 7.31 cm×7.31 cm (48.7λ×48.7λ for a 1 MHz driving frequency). The array consists of 1.8 mm×1.8 mm (1.2λ×1.2λ) square transducers with a 0.5 mm kerf between adjacent elements.
