Abstract: The present invention relates to the field of acoustoelectric and acoustooptical imaging methods. It is known a specific example of an acoustoelectric imaging method, in which focused ultrasonic waves are emitted so as to form an image of the current, line by line. However, the acquisition process disclosed is slow, and all the more so because, as the resulting electrical signals are very weak, a high level of averaging is required. Low frame rates are therefore obtained. That is why the inventors worked on an imaging method with improved contrast and resolution. The present invention proposes a method for imaging a medium (10) wherein ultrasound contrast agents (12) are present.