A kind of image processing equipment is provided, core is imaged while catheter shaft rotates by mobile imaging core in the cross sectional image obtained for handling multiple OCT. Along axial location information when the related data associated storage of cross-sectional image, each cross-sectional image is obtained. Wherein the first cross-sectional image disappearance section allows to determine that the part elastica externa for existing and disappearing is included in blood vessel tomographic image and starts, and the second cross-sectional image, and wherein disappearance section end is from a large amount of cross-sectional images. Location information obtains in axial direction, these first faultage images of storage and the second cross-sectional image and an ablation range is associated by ablation absolute atmosphere position, and the difference of disappearance section, calculates the location information in acquisition, in the axial direction.
