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X-Ray CT Apparatus

  • US 20070211845A1
  • Filed: 01/06/2007
  • Published: 09/13/2007
  • Est. Priority Date: 03/09/2006
  • Status: Abandoned Application
First Claim
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1. An x-ray CT apparatus comprising:

  • an x-ray data collecting device for collecting x-ray projection data transmitted by a subject positioned between an x-ray generating device and a multi-row x-ray detector, while rotating said x-ray generating device and said multi-row x-ray detector around a rotation center positioned in-between;

    an image reconstructing device for performing image reconstruction from the projection data collected from said x-ray data collecting device;

    an image display device for displaying a tomogram obtained by image reconstruction; and

    a scanning condition setting device for setting various scanning conditions of tomography scanning,wherein said x-ray data collecting device is operable for variable-pitch helical scanning in which x-ray projection data of the subject on a scanning table is collected by moving the scanning table while varying the speed relative to a scanning gantry in a z direction perpendicular to an xy plane which is the rotating plane of the x-ray generating device and the two-dimensional x-ray area detector, and of which starting of the x-ray data collection and starting of the scanning table movement relative to the scanning gantry and/or stopping of the x-ray data collection and stopping of the scanning table movement relative to the scanning gantry are asynchronously executed.

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