Provided is an ultrasound imaging apparatus including a probe configured to transmit an ultrasound signal to an object along a first path and receive an echo signal reflected from the object and a processor configured to generate a first ultrasound image representing the object, detect at least one region having low image quality among regions in the generated first ultrasound image according to a predetermined criterion, control the ultrasound signal to be transmitted along a second path by focusing the ultrasound signal at a focal point within a predetermined region of the object corresponding to the detected at least one region, and generate a second ultrasound image representing the object based on an echo signal received in response to the ultrasound signal transmitted to the object along the second path.
