Patent ID: 8976923
Filing Date: 2015-03-10
Classification: A61B,G06T

Abstract:
1. A multislice CT apparatus comprising: an X-ray source configured to produce X-rays; a multislice detector having a plurality of columns of detecting elements each being configured to detect the X-rays; a scan performing unit configured to perform a conventional scan by rotating the X-ray source and the multislice detector around an object; a weighting coefficient setting unit configured to set a weighting coefficient in such a way that data before reconstruction on a middle column is weighted high while data before reconstruction on columns on both sides of the middle column is weighted low on a middle channel in the multislice detector, and that a weight given to data before reconstruction on a middle column falls while a weight given to data before reconstruction on both side columns rises as shifting from the middle channel to an end channel; a correcting unit configured to correct the weighting coefficient in such a way that a weight rises as shifting from a central column to an end column in the multislice detector; a column direction filtering unit configured to filter data before reconstruction collected by the scan on the basis of the corrected weighting coefficient in a column direction; and an image reconstructing unit configured to reconstruct an image on the basis of the filtered data before reconstruction.