Medical image processing apparatus, X-ray diagnostic apparatus, and medical image processing method

An X-ray diagnostic apparatus comprising:

• an imaging system configured to acquire at least X-ray contrast image data of an imaging region including blood vessels of an object;
• a range setting part configured to set a target range in the X-ray contrast image data or subtraction image data generated by subtraction processing between the X-ray contrast image data and non-contrast X-ray image data;
• and
• a blood vessel image generation part configured to derive time changes in concentrations of a contrast agent based on the X-ray contrast image data or the subtraction image data, and generate blood vessel image data having pixel values corresponding to times, at which concentrations of the contrast agent become a specific condition, within the target range and pixel values corresponding to concentrations of the contrast agent outside the target range.

A medical image processing method comprising:

• receiving at least one of X-ray contrast image data and subtraction image data, of an imaging region including blood vessels of an object, the subtraction image data being generated by subtraction processing between the X-ray contrast image data and non-contrast X-ray image data;
• setting a target range in the received X-ray contrast image data or the received subtraction image data;
• and
• deriving time changes in concentrations of a contrast agent based on the received X-ray contrast image data or the received subtraction image data, and generating blood vessel image data having pixel values corresponding to times, at which concentrations of the contrast agent become a specific condition, within the target range and pixel values corresponding to concentrations of the contrast agent outside the target range.