Medical image dianostic device, region-of-interest setting method, and medical image processing device

A region-of-interest setting method comprising:

• a step of obtaining image data of a tissue of an object and generating an image of the tissue of the object based on the image data;
• a step of calculating motion vectors of a plurality of measurement points of the generated image to obtain a first motion characteristic amount;
• a step specifying an observation region of the image;
• a step a reading a second motion characteristic amount of the observation region specified in the step of specifying the observation region from a database in which the characteristic amount of the motion vectors of the plurality of measurement points in respective images of a plurality of different observation regions is set and stored, and detecting a position where the first motion characteristic amount coincides with the second motion characteristic amount;
• and
• a step of setting a region of interest in the generated image based on the position where the first motion characteristic amount coincides with the second motion characteristic amount.

A medical image processing device comprising:

• an image input instrument configured to input an image of a tissue of an object, which is generated in advance;
• a calculator configured to calculate motion vectors of a plurality of measurement points of the input image to obtain a first motion characteristic amount;
• an input instrument configured to specify an observation region of the image;
• a checker configured to read a second motion characteristic amount of the observation region specified by the input instrument from a database in which the characteristic amount of the motion vectors of the plurality of measurement points in respective images of a plurality of different observation regions is set and stored, and detecting a position where the first motion characteristic amount coincides with the second motion characteristic amount;
• and
• an ROI (region of interest) setting unit configured to set a region of interest in the image based on the position where the first motion characteristic amount coincides with the second motion characteristic amount.