Apparatus and method for detecting ultrasound images from a body under examination, the apparatus comprises a unit emitting ultrasound pulses and a unit receiving ultrasound pulses, the emitting unit and the receiving unit facing each other and spaced apart from each other by a predetermined distance such that they are arranged at opposite sides of a cavity housing the body under examination and the ultrasound pulses emitted from the emitting unit are received by the receiving unit after passing through the body under examination and are transformed into transmission signals, a control unit for the emitting unit, a unit processing the received signals, image generating means and image displaying means, the processing unit comprising a unit evaluating the attenuation of ultrasound pulses and/or the propagation speed of ultrasound pulses, wherein the processing unit comprises a unit comparing said values of the propagation speed of ultrasound pulses and/or of the attenuation of ultrasound pulses with predetermined threshold values, transmission signals resulting from the presence of contrast agents within the body under examination when the comparison of the attenuation of ultrasound pulses and/or of said propagation speed of ultrasound pulses is under or over the threshold values.
