An ultrasound diagnosis apparatus and a method thereof are provided. The ultrasound diagnosis apparatus includes: a data obtainer configured to obtain volume data of an object； a display configured to display a reference cross-section of the object extracted from the volume data； a user input unit configured to receive a user input selecting a reference object included in the displayed reference cross-section； and an image processor configured to normalize the volume data by using location information of the reference object, and to extract a coronal plane of the object based on information of at least one anatomical landmark included in the normalized volume data, and the display is further configured to display the extracted coronal plane.
