Ultrasonic diagnosis system and image data display control program

A non-transitory computer-readable medium storing an image data display control program that is executed by a processor, the processor being included in an ultrasonic diagnosis system that generates virtual endoscopic image data on a lumen of an organ of an object based on volume data acquired by three-dimensional scanning using an ultrasonic probe, comprising:

• setting a three-dimensional region of interest for the volume data which is, the volume data being updated while the ultrasonic probe moves, and the three-dimensional region of interest being moved together with movement of the ultrasonic probe and being automatically set on the basis of an x-directional range and a y-directional range of the volume data;
• setting a center line of the lumen of the organ represented by the volume data based on the volume data;
• detecting a reference point at which a reference plane of the moved three-dimensional region of interest and the center line intersect with each other;
• setting a viewpoint and a view direction based on the reference point;
• processing the volume data based on the viewpoint and the view direction to generate the virtual endoscopic image data;
• and
• displaying the generated virtual endoscopic image data.

An ultrasonic diagnosis system that generates virtual endoscopic image data of a lumen of an organ of an object based on volume data acquired by three-dimensional scanning using an ultrasonic probe, the volume data being updated while the ultrasonic probe moves, the system comprising:

• a center line setting unit that sets a center line of the lumen of the organ in the volume data based on the acquired volume data;
• a reference point detecting unit that detects a reference point at which a reference plane and the center line intersect with each other, the reference plane being moved together with movement of the ultrasonic probe and being set in the volume data as a scanning plane on which two-dimensional scan is to be performed when the ultrasonic probe is used in a two-dimensional scanning mode;
• a view setting unit that sets a viewpoint and a view direction based on the reference point;
• a virtual endoscopic image data generating unit that processes the volume data based on the viewpoint and the view direction to generate the virtual endoscopic image data;
• and
• a display unit that displays the generated virtual endoscopic image data.