Ultrasonic imaging device comprising a plurality of ultrasonic transducers arranged in an array of a plurality of rows (Ri) and a plurality of columns (Cj), the array being divided into a plurality of sub-arrays of neighboring transducers, each comprising m rows and n columns, m and n being integers greater than or equal to 2, the device comprising, for each sub-array: - a single transmit and/or receive circuit; and - a combiner selector and/or splitter selector circuit configurable to couple any, alone, of the transducers of the sub-array to the transmit and/or receive circuit of the sub-array, or to simultaneously couple a plurality of the transducers of the sub-array to the transmit and/or receive circuit of the sub-array, the device further comprising a control circuit (CTRL) adapted to individually controlling the combiner selector and/or splitter selector circuits of the different sub-arrays, characterized in that the control circuit (CTRL) is configured to, during a phase of acquisition of an ultrasonic wave of a first type, successively acquire m*n partial images of a body to be analyzed, and then reconstruct the image from the m*n acquired partial images, the control circuit (CTRL) being configured to, at each acquisition of a partial image, in each sub-array, coupled to the transmit and/or receive circuit of the sub-array a single transducer selected among the m*n transducers of the sub-array, and to modify the transducer selected in each sub-array for each new acquisition of a partial image to involve the m*n transducers of each sub-array. - a single transmit and/or receive circuit; and - a combiner selector and/or splitter selector circuit configurable to couple any, alone, of the transducers of the sub-array to the transmit and/or receive circuit of the sub-array, or to simultaneously couple a plurality of the transducers of the sub-array to the transmit and/or receive circuit of the sub-array, the device further comprising a control circuit (CTRL) adapted to individually controlling the combiner selector and/or splitter selector circuits of the different sub-arrays, characterized in that the control circuit (CTRL) is configured to, during a phase of acquisition of an ultrasonic wave of a first type, successively acquire m*n partial images of a body to be analyzed, and then reconstruct the image from the m*n acquired partial images, the control circuit (CTRL) being configured to, at each acquisition of a partial image, in each sub-array, coupled to the transmit and/or receive circuit of the sub-array a single transducer selected among the m*n transducers of the sub-array, and to modify the transducer selected in each sub-array for each new acquisition of a partial image to involve the m*n transducers of each sub-array. the device further comprising a control circuit (CTRL) adapted to individually controlling the combiner selector and/or splitter selector circuits of the different sub-arrays, characterized in that the control circuit (CTRL) is configured to, during a phase of acquisition of an ultrasonic wave of a first type, successively acquire m*n partial images of a body to be analyzed, and then reconstruct the image from the m*n acquired partial images, the control circuit (CTRL) being configured to, at each acquisition of a partial image, in each sub-array, coupled to the transmit and/or receive circuit of the sub-array a single transducer selected among the m*n transducers of the sub-array, and to modify the transducer selected in each sub-array for each new acquisition of a partial image to involve the m*n transducers of each sub-array.