Medical system and method for providing measurement information using three-dimensional caliper

A method of providing measurement information, the method comprising:

• acquiring image data corresponding to a three-dimensional (3D) image of a living body including an object;
• creating 3D data by using the image data;
• creating the 3D image by using the 3D data;
• receiving user input information;
• detecting 3D geometry information corresponding to a 3D caliper from the 3D data based on the user input information;
• and
• setting the 3D caliper on the 3D image based on the detected 3D geometry information to create measurement information.

The method of claim 30, wherein the detecting of 3D geometry information of the ROI from the 3D image comprises:

• setting a virtual observation plane consisting of a plurality of pixels based on the 3D data;
• detecting a pixel corresponding to the ROI from the virtual observation plane;
• projecting a virtual ray from the detected pixel onto the 3D data to detect a voxel at which the virtual ray and the virtual plane meet each other;
• and
• setting 3D geometry information of the detected voxel as 3D geometry information of the ROI.