An ultrasound imaging apparatus for measuring a local pulse wave velocity according to an embodiment of the present invention may include an ultrasound transceiving unit, a data acquisition unit, a blood vessel wall velocity calculator, a vessel wall velocity image unit, and a pulse wave velocity calculator. The ultrasound transceiving unit may transmit a transmission ultrasound signal to an object including a blood vessel wall, and receive a received ultrasound signal reflected from the object. The data acquisition unit may beamform the received ultrasound signal and store it as scan line data corresponding to the scan line for each frame. The blood vessel wall motion estimator includes a blood vessel wall according to a correlation between the first comparison data included in the first comparison area of the first frame among the frames and the second comparison data included in the second comparison area of the second frame acquired after the first frame. Motion vectors can be estimated. The blood vessel wall velocity calculator may calculate the vessel wall velocity according to the length and time of the local blood vessel based on the vessel wall motion vector. The blood vessel wall velocity image unit may display the vessel wall velocity as a vessel wall velocity image in a two-dimensional space according to the length and time of the local blood vessel. The pulse wave velocity calculator may calculate the local pulse wave velocity based on feature points formed along the length direction of the local blood vessel of the vessel wall velocity image. The ultrasound imaging apparatus for measuring the local pulse wave velocity according to the present invention can quickly and accurately determine the risk of cardiovascular disease by calculating the local pulse wave velocity based on the feature points formed along the length direction of the local blood vessel in the vessel wall velocity image.본 발명의 실시예에 따른 국부 맥파속도를 측정하는 초음파 영상 장치는 초음파 송수신부, 데이터 획득부, 혈관벽 속도 계
