Embodiments of the invention provide a dermatological cosmetic treatment and imaging system and method. In some embodiments, the system 20 includes a hand wand 100 with at least one finger activated controller 150, 160, and a removable transducer module 200 having an ultrasound transducer 280. In some embodiments, the system 20 can include a control module 300 that is coupled to the hand wand 100 and has a graphical user interface 310 for controlling the removable transducer module 200, and an interface 130 coupling the hand wand 100 to the control module 300. The interface 130 may provide power to the hand wand or may transfer a signal from the hand wand to the control module. In some embodiments, the cosmetic treatment system 20 may be used in cosmetic procedures on at least a portion of a face, head, neck, and/or other part of a patient.