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    • 117. 发明授权
    • X-ray computed tomography apparatus with X-ray intensity control
    • 具有X射线强度控制的X射线计算机断层摄影装置
    • US07142630B2
    • 2006-11-28
    • US11107901
    • 2005-04-18
    • Tetsuro Suzuki
    • Tetsuro Suzuki
    • H05G1/34
    • A61B6/032A61B6/542
    • An X-ray computed tomography apparatus includes an X-ray tube, a high voltage generator which generates a high voltage to be applied to the X-ray tube, an X-ray detector having a plurality of X-ray detection element lines, a scanogram generating unit which generates a scanogram on the basis of an output from the X-ray detector, a reconstructing unit which reconstructs an image on the basis of an output from the X-ray detector, a tube current determining unit which determines a tube current value on the basis of the pixel values of a plurality of pixels included in a two-dimensional partial region of the scanogram, and a control unit which controls the high voltage generator on the basis of the determined tube current value.
    • X射线计算机断层摄影装置包括X射线管,产生施加到X射线管的高电压的高电压发生器,具有多个X射线检测元件线的X射线检测器, 扫描图生成单元,其基于来自X射线检测器的输出生成扫描图;重建单元,其基于来自X射线检测器的输出重建图像;管电流确定单元,其确定管电流 基于包括在扫描图的二维部分区域中的多个像素的像素值的控制单元,以及基于所确定的管电流值来控制高电压发生器的控制单元。