Medical Ultrasound Imaging
Wednesday, 4 December 2024
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Composite arrays are combinations of piezoelectric ceramics and polymers that form a new material with different properties. Piezocomposites improve the performance of usual arrays such as the mechanically scanned annular array and the linear phased array. Piezocomposites reduce the acoustic impedance with a better impedance match with tissue. The result is a reduction of the reverberation level in the near field. Unwanted surface waves propagating laterally over the transducer are suppressed. The composite materials allow to vary the electromechanical coupling constant, and to give better control over the trade-off between sensitivity and bandwidth. See also Narrow Bandwidth, Dead Zone, Ultrasound Phantom. Result Pages : | Share This Page     Look Ups |
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[last update: 2023-11-06 01:42:00]