Method and device for performing ultrasonic imaging with row-column addressing

A method of acquiring an image of a body by means of a row-column addressed matrix ultrasonic imaging device, the device comprising an array of elementary ultrasonic transducers connected in rows and columns by respectively row electrodes and column electrodes, the method comprising:

• performing N successive shots of the same ultrasonic wave towards said body, where N is an integer greater than or equal to 2;
• after each shot, implementing a reception phase, by means of said device, of a return ultrasonic wave reflected by said body,
• in which, during each of the reception phases, a variable electrical quantity representative of the received wave is read at each row electrode of the device,
• and in which, between any two of the N reception phases, the sign of the individual contribution of at least one elementary ultrasonic transducer of the array is modified,
• the method further comprising a step of calculating, by means of an electronic processing device, by linear combinations of the electrical variable quantities read on the row electrodes of the device during the N reception phases, of an individual contribution of each of the elementary transducers of the array.