Medical image processing apparatus and medical image processing method

A medical image processing apparatus comprising processing circuitry configured to:

• obtain first projection data as to a first region of an imaging region of a subject together with first dynamic data representing motion of the subject;
• obtain second projection data as to a second region of the imaging region together with second dynamic data representing the motion of the subject, the second region being different from the first region;
• when the first dynamic data and the second dynamic data both exceed a threshold and the first dynamic data and the second dynamic data match each other in magnitude of the motion of the subject,
• extract, from the first projection data, a first projection dataset corresponding to an angular range suited for image reconstruction at a predetermined time phase interval or according to the magnitude of the motion, and
• extract, from the second projection data, a second projection dataset corresponding to the angular range at the predetermined time phase interval or the second projection dataset as to a same magnitude of the motion as the first projection dataset;
• when the first dynamic data and the second dynamic data both exceed the threshold and the first dynamic data and the second dynamic data differ from each other in the magnitude of the motion of the subject,
• extract the first projection dataset from the first projection data according to the magnitude of the motion, and
• extract the second projection dataset as to the same magnitude of the motion as the first projection data from the second projection data;
• reconstruct first volume data based on the first projection dataset and reconstruct second volume data based on the second projection dataset;
• and
• generate concatenated volume data as to the imaging region of the subject by concatenating the first volume data and the second volume data.