A catheter tip (50, 170, 750) is provided that is adapted for mating attachment to a catheter body (90, 300, 790). In an embodiment, the catheter tip (50, 170, 750) comprises a transducer array (32, 60, 110, 210, 710) in electrical communication with an interconnect (120, 220, 720) and in a mechanical driven relationship with an actuator (80, 730), also in the catheter tip (50, 170, 750), via a drive shaft (38, 82, 732). The transducer array (710) is encapsulated in a potting material body 711 providing a desired ultrasound acoustical transmission, A defined annular space 761 exists between an outer capsule 752 of the catheter tip 750 and the potting material body 711. Oscillating back and forth motion of the transducer array (32, 60, 110, 210, 710) provides ultrasonic imaging functionality that may include real time three-dimensional imaging. Other embodiments of the catheter tip (50, 170, 750) and methods of fabrication also are provided.