1. A medical image processing apparatus comprising: an image acquiring unit configured to acquire a three-dimensional medical image; a vascular region extracting unit configured to extract a vascular region based on the three-dimensional medical image acquired by the image acquiring unit; a vascular shape image generating unit configured to generate an image of a vascular shape of the vascular region extracted by the vascular region extracting unit; a perfusion analyzing unit configured to perform perfusion analysis on the three-dimensional medical image acquired by the image acquiring unit so as to obtain a perfusion value indicating a blood circulation condition in tissue around the vascular region; a perfusion image generating unit configured to generate an image indicating the perfusion value obtained by the perfusion analyzing unit; an image composition unit configured to generate a vascular shape perfusion composition image in which an image generated by the vascular shape image generating unit of the vascular shape in a contraction portion in a blood vessel corresponding to the vascular region is combined with the image indicating the perfusion value generated by the perfusion image generating unit; and a display unit configured to display the vascular shape perfusion composition image combined by the image composition unit.