| 摘要 |
An ultrasound probe particularly for diagnostic purposes comprises a first array of ultrasound transducers (30) generating ultrasound waves by electric excitation and transforming ultrasound waves impinging on them in electric signals, each transducer being provided with a couple of contact electrodes (10, 401) which are connected respectively to a ground potential and to electric signals feeding lines. According to the invention, the first array of transducers comprises only emitting transducers (30) and is intended only for generating and transmitting the ultrasound waves, while a second array of transducers is provided laid over the first array of emitting transducer and comprising receiving transducers for only generating the electric receipt signals due to acoustic excitation of the receiving transducers. The said second array of transducers is formed of a material having piezoelectric behaviour and an acoustic impedance intermediate to the one of the first array of transducers and of the body under examination, thus having at the same time the function of matching layer and of ultrasound waves receiver. |
