Array of electroacoustic transducers for emitting and receiving acoustic radiation beams, which transducer array comprises a predetermined number of individual transducer elements that are arranged side by side along a row the length of said row corresponding to the aperture of the transducer array. According to the invention, with the aperture of the array of transducer elements remaining the same, there is provided a double, triple amount or an amount corresponding to a rational fraction of the number of transducers and having half the pitch, a third of the pitch or a pitch corresponding to said rational fraction respectively, the directly adjacent transducer elements being intended for emitting acoustic pulses and for receiving acoustic pulses respectively such to make two sub-arrays of transducer elements used only for transmitting and only for receiving acoustic pulses respectively, while directly adjacent transducer elements intended for the transmission and for the reception respectively share the same connection line or channel which branches off by means of a buffer into a dedicated connection branch for each one of said two transducer elements.
The invention relates to a three-dimensional imaging ultrasound probe having a small number of channels using said transducer array.