| 摘要 |
PURPOSE:To reduce a partial volume artifact and to improve the picture quality by providing a data grouping means for dividing scan data of a 360 deg. portion into two or more groups, and an image reconstitution arithmetic means for obtaining separately image data with regard to each group. CONSTITUTION:When the scan data of scan angles 0 deg.-360 deg. in inputted, the data distributing part 11 of an image reconstituting device 4 divides it into two groups, and inputs one and the other to a first pre-processing part 12 side and a second preprocessing part 13 side, respectively. The scan angle of a boundary for grouping can be designated arbitrarily, and the data distributing part 11 executes grouping by overlapping the scan data before and behind the scan angle of the designated boundary. A first pre-processing part 12 and a first reconstituting part 14, and a second pre-processing part 13 and a second reconstituting part 15 execute the pre-processing of the scan data of a first group and the scan data of a second group, respectively, and execute an image reconstitution operation. An image synthesizing part 16 adds image data outputted from the reconstituting parts 14, 15, and synthesizes them to one image data. |
