Ultrasound system and method for rendering volume data

PURPOSE: An ultrasound system and a method for rendering volume data are provided to reduce the amount of rendering calculation as well as removing the artifact by not rendering the unnecessary space except for ROI. CONSTITUTION: An ultrasonic wave data acquisition part(110) comprises an ultrasonic probe and a beam former including a plurality of transducer element. A volume data forming unit(120) forms the volume data using the ultrasonic wave data supplied by the ultrasonic wave data acquisition part. A user input portion(130) is inputted with the instruction of a user.