A medical imaging system for imaging a patients body includes a catheter having a position sensor and an ultrasonic imaging sensor wherein the position sensor transmits electrical signals indicating positional information of the catheter in the patients body and the ultrasonic imaging sensor transmits ultrasonic energy at a target in the patients body, receives ultrasonic echoes reflected from the target and transmits signals relating to the reflected ultrasonic echoes. A positioning processor is connected to the catheter for determining its positional information based on the electrical signals transmitted by the position sensor. The system includes a display and an image processor connected to the catheter, the positioning processor and the display. The image processor generates an ultrasonic image of the target and depicts the generated ultrasound image on the display in the same orientation as the catheter in the patients body based on positional information from the position sensor.
