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    • 9. 发明申请
    • X-RAY RADIATION DIAPHRAGM AND CONTROL METHOD THEREFOR, AND CT DEVICE EMBODYING SAME
    • X射线辐射透镜及其控制方法及其CT装置
    • US20080317212A1
    • 2008-12-25
    • US12143287
    • 2008-06-20
    • Ulrich KuehnHeiko Wolf
    • Ulrich KuehnHeiko Wolf
    • G21K1/04
    • A61B6/06A61B6/027G21K1/04
    • A collimator device has at least one masking device that is adjustable between two end positions for collimation of a beam fan in an x-ray CT device, wherein the x-ray fan is schematically not masked in a first end position. The x-ray beam is more than half-masked in a second end position of the masking device. In a method for operation of such a collimator device as well as an x-ray CT device for examination of a subject having an x-ray source, a collimator device, and a control device for regulation of the aperture width of the masking device, an x-ray detector is arranged opposite the x-ray source and the collimator device and that detects the x-rays modified due to the intervening examination subject; and an image construction device reconstructs an image of the examination subject therefrom.
    • 准直器装置具有至少一个可在两个端部位置之间调节的掩模装置,用于准直X射线CT装置中的束扇,其中,X射线风扇在第一端部位置中未示意地未被遮蔽。 在掩蔽装置的第二端位置,X射线束大于半掩模。 在这种准直器装置的操作方法以及用于检查具有x射线源的对象的X射线CT装置,准直器装置和用于调节掩蔽装置的孔径宽度的控制装置中, X射线检测器布置在x射线源和准直器装置的对面,并且检测由于介入检查对象而修改的x射线; 并且图像构造装置从其重建检查对象的图像。