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Computed tomography device and method using circular-pixel position-adaptive interpolation
专利权人:
Ilmar Hein
发明人:
Ilmar Hein,Aleksandr Zamyatin
申请号:
US12268889
公开号:
US08116426B2
申请日:
2008.11.11
申请国别(地区):
US
年份:
2012
代理人:
摘要:
A method of computed-tomography and a computed-tomography apparatus where a interpolation kernel width is adaptively determined as a function of the distance from the x-ray source to the reconstruction pixel. The width of the kernel is the projection of the reconstruction pixel on the detector. The method can be implemented in the channel direction. The method can also be implemented in the segment direction, or in the channel and segment directions at the same time. Backprojection is performed using the adaptive kernel width and may by used with helical and circular scanning, and with cone-beam or fan beam x-ray CT.
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