A compact 2D matrix array comprised of hexagonal transducer elements for fast volumetric ultrasound imaging
Hugues Favre (TU Delft - ImPhys/Maresca group)
Merijn Berendsen (Student TU Delft)
R. Waasdorp (TU Delft - ImPhys/Maresca group)
D. Maresca (TU Delft - ImPhys/Medical Imaging, TU Delft - ImPhys/Maresca group)
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Abstract
Advances in 4D ultrasound imaging open new perspectives in biomedical research by reducing the long-standing challenge of operator dependency. Extensive research efforts are focused on developing next generation of 2D transducer arrays for 4D imaging. Here, we present a compact 2D array design based on hexagonal-shaped transducer elements. We demonstrate that 2D hexagonal arrays provide an optimal compact sampling, resulting in lower grating lobe levels and an improved imaging quality compared to conventional square-shaped transducer element arrays. A prototype array made of hexagonal transducer elements is presented, and its characterization is provided, demonstrating its imaging capabilities.