发明名称 |
X-RAY COMPUTED TOMOGRAPHY APPARATUS |
摘要 |
A control unit performs helical scanning an subject while moving a top along a direction substantially parallel to a body axis. An acquisition unit acquires projection data via an X-ray detector. A projection data extraction unit extracts a projection data set necessary for the reconstruction of image data associated with a predetermined slice position from the projection data. A weighting unit assigns a smaller weight to first projection data of the extracted projection data than a weight assigned to second projection data, the first projection data being acquired outside a predetermined period including a predetermined acquisition time of the projection data at the predetermined slice position, the second projection data being acquired within the predetermined period. A reconstruction processing unit reconstructs image data on the basis of the first projection data and the second projection data to which the weights are assigned.
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申请公布号 |
US2009110139(A1) |
申请公布日期 |
2009.04.30 |
申请号 |
US20080256855 |
申请日期 |
2008.10.23 |
申请人 |
NOSHI YASUHIRO;NAKANISHI SATORU;SAITO SATOSHI |
发明人 |
NOSHI YASUHIRO;NAKANISHI SATORU;SAITO SATOSHI |
分类号 |
A61B6/00 |
主分类号 |
A61B6/00 |
代理机构 |
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代理人 |
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地址 |
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