The present disclosure is directed to an ultrasound imaging system for generating 3D images. The system includes an ultrasound probe having a transducer housing and a transducer transmitter. The housing has a body extending from a proximal end to a distal end along a longitudinal axis. The distal end includes an internal cavity that extends, at least, from a first side to a second side along a lateral axis of the housing. The transmitter is mounted to the first and second sides within the cavity and is configured to rotate about the lateral axis for scanning of an ultrasound beam. Thus, during operation, the transmitter is free to rotate in a clockwise direction and/or a counter-clockwise direction about the lateral axis so as to continuously scan two-dimensional (2D) images. The system may also include a controller configured to receive and organize the 2D images in real-time and generate a 3D image based on the 2D images.