Patent ID: 9208540
Filing Date: 2015-12-08
Classification: G06T

Abstract:
1. An image producing method comprising: acquiring regular-interval parallel-beam projection data whose intervals in a channel direction are the same and parallel to each other in a plurality of view directions by applying interpolation processing in a view direction, rearrangement processing, and interpolation processing in the channel direction to fan-beam projection data in a plurality of views collected during a scan performed by rotating, around a subject, a radiation source and a detector in which a plurality of detector elements are arranged in the channel direction; and reconstructing an image by applying back projection processing to the acquired regular-interval parallel-beam projection data, wherein the interpolation processing in the view direction includes interpolation processing which is performed along a curve or a first straight line made by deforming or rotating a second straight line parallel to the view direction so as to be proximate to a trajectory drawn by dots corresponding to a desired position in a Scan Field Of View region on a sinogram of the collected fan-beam projection data in the plurality of views.