An aesthetic treatment system comprising: a transducer module comprising an ultrasound transducer, which comprises a piezoelectric material, wherein the ultrasound transducer is configured to apply ultrasonic therapy to tissue at a plurality of locations at one or more focal depths with at least one of the group consisting of amplitude modulation, poling, and phase shifting, the ultrasound transducer being configured to create spaced multiple thermal coagulation points simultaneously by application of the ultrasound energy with each individual thermal coagulation point separated from a neighboring thermal coagulation point, wherein the transducer module further comprises an interface guide designed to for removable coupling to a hand wand to provide electronic communication and power between the transducer module and the hand wand, wherein the ultrasound transducer comprises piezoelectric material and a plurality of portions of the ultrasound transducer are configured to create a plurality of corresponding piezoelectric material variations in response to an electric field applied to the ultrasound transducer, wherein the plurality of piezoelectric material variations comprise at least one of expansion of the piezoelectric material and contraction of the piezoelectric material when using poling, wherein the poling comprises different poling moments provided from the plurality of portions of the piezoelectric material; or, when using amplitude modulation, the ultrasound transducer is configured to apply ultrasonic therapy using amplitude modulation whereby a plurality of portions of the ultrasound transducer are configured to emit ultrasonic therapy at a plurality of amplitudes of acoustic intensity, wherein a first amplitude is different than a second amplitude; or, when using phase shifting, the ultrasound transducer is configured apply ultrasonic therapy phase shifting whereby a plurality of portions of the ultrasound transducer are configured to emit ultrasonic therapy at a plurality of phases of acoustic intensity, wherein a first phase is different than a second phase. a transducer module comprising an ultrasound transducer, which comprises a piezoelectric material, wherein the ultrasound transducer is configured to apply ultrasonic therapy to tissue at a plurality of locations at one or more focal depths with at least one of the group consisting of amplitude modulation, poling, and phase shifting, the ultrasound transducer being configured to create spaced multiple thermal coagulation points simultaneously by application of the ultrasound energy with each individual thermal coagulation point separated from a neighboring thermal coagulation point, wherein the transducer module further comprises an interface guide designed to for removable coupling to a hand wand to provide electronic communication and power between the transducer module and the hand wand, wherein the ultrasound transducer comprises piezoelectric material and a plurality of portions of the ultrasound transducer are configured to create a plurality of corresponding piezoelectric material variations in response to an electric field applied to the ultrasound transducer, wherein the plurality of piezoelectric material variations comprise at least one of expansion of the piezoelectric material and contraction of the piezoelectric material when using poling, wherein the poling comprises different poling moments provided from the plurality of portions of the piezoelectric material; or, when using amplitude modulation, the ultrasound transducer is configured to apply ultrasonic therapy using amplitude modulation whereby a plurality of portions of the ultrasound transducer are configured to emit ultrasonic therapy at a plurality of amplitudes of acoustic intensity, wherein a first amplitude is different than a second amplitude; or, when using phase shifting, the ultrasound transducer is configured apply ultrasonic therapy phase shifting whereby a plurality of portions of the ultrasound transducer are configured to emit ultrasonic therapy at a plurality of phases of acoustic intensity, wherein a first phase is different than a second phase.