发明名称 |
Method and apparatus for X-ray image correction |
摘要 |
In an X-ray computerized tomography scanner, a correction phantom embedding an X-ray absorbing object is put on or around a non-vertical rotary axis between an X-ray source and a two-dimensional X-ray detector, and two dimensional imaging data of the phantom is acquired. Then a locus of the X-ray absorbing material is determined in the two-dimensional imaging data, and based on the locus an ideal locus is obtained in the direction of the rotary axis. Next, a difference between the calculated position of the ideal locus and a measured position is determined in the direction of the rotary axis. The difference is used to correct deviation in the direction of the rotary axis.
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申请公布号 |
US2005047552(A1) |
申请公布日期 |
2005.03.03 |
申请号 |
US20040894218 |
申请日期 |
2004.07.19 |
申请人 |
J. MORITA MANUFACTURING CORPORATION |
发明人 |
ARAI YOSHINORI;SUZUKI MASAKAZU |
分类号 |
A61B6/00;A61B6/03;(IPC1-7):G21K1/12;G01N23/00 |
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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