Abstract: The invention relates to a Method for 3D ultrasound image acquisition as well as to a system for conducting the method. The proposed method checks whether the current ultrasound image (401, 402) has at least a pixel in the volume of interest (301), wherein in case the current image (401, 402) has no pixel in the volume of interest (301), the current image (401, 402) is discarded, wherein otherwise the current ultrasound image (401, 402) is segmented and compounded into said 3D model (403) to be generated which is displayed in real-time on the display (101) and particularly overlaid on the displayed pre-acquired image (305), wherein particularly in case a new current ultrasound image (401, 402) is compounded into the 3D model (403), the displayed 3D model (403) on the display (101) is updated.