It is provided with a (10) an acoustic transducer assembly for a system and tissue modification method, a phased array (15) a piezoelectric element for emitting a predetermined period acoustic beam targets multiple volumes (12) and (14), the target volume includes the organization, the organization of the target volume is modified by, the pressure in the target volume is the erosion threshold following the sound beam, the predetermined period thermal reforming the organization of the target volume within the sound beam shorter than the length that occur, I further comprises a pressure sensor (29), skin temperature sensor (34), an electronic circuit connected to (42) control subsystem (24). [Selection] Figure Figure 1
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