An image processing apparatus includes a control unit that reconstructs images by using raw data, a storage unit that stores the raw data, the images, and reconstruction conditions used when the images are reconstructed, in correlation with each other, a display unit; and an input unit that inputs selection of an image on which post-reconstruction will be performed among the images stored in the storage unit and post-reconstruction conditions, by referring to the image displayed on the display unit, in which the control unit receives selection of the image which is input via the input unit, reads selected image reconstruction conditions based on the received selection of the image from the storage unit, calculates comparison information of image quality on the basis of the read reconstruction conditions and post-reconstruction conditions input via the input unit, and displays the calculated comparison information on the display unit.