Provided is an ultrasound system configured to detect a flow noise signal at a phantom gate and display a visual indictor representing the detected flow noise signal. The ultrasound system transmits ultrasound signals to an object including a sample volume and receives echo signals from the sample volume and at least one phantom gate. The ultrasound system also generates an ultrasound image based on the received echo signals and displays the generated ultrasound image. Furthermore, the ultrasound system detects a flow noise signal at the at least one phantom gate by using the echo signals and displays a visual indicator representing the detected flow noise signal together with the ultrasound image.
