In an image processing apparatus according to an embodiment, a noise information obtaining unit obtains information about an obstructive factor that is related to the precision level of perfusion images and is contained in pieces of medical image data acquired chronologically on the basis of a TDC at an inflow blood vessel for an analysis target tissue of which the perfusion state is analyzed and on the basis of a perfusion model of the analysis target tissue, an estimating unit estimates a TDC of the analysis target tissue on the basis of the estimated TDC of the analysis target tissue and on the basis of the information about the obstructive factor, a generating unit generates assessment information used for assessing reliability of the perfusion images generated from the pieces of medical image data and a display control unit exercises control so that a display unit displays the assessment information.
