Patent ID: 6470066
Filing Date: 2002-10-22
Classification: A61B

Abstract:
An x-ray computerized tomography (CT) apparatus comprising:a cyclic movement detector detecting a cyclic movement of a living body to be examined and producing an output signal representing the cyclic movement of a part of said living body; an x-ray source irradiating said living body with x-rays; an x-ray detector detecting ones of said x-rays transmitted through said living body to obtain scan data; a rotational member supporting said x-ray source and said x-ray detector on said rotational member on opposite sides of said living body and rotating around said living body; a driving mechanism driving a rotation of said rotational member; and a control unit controlling a rotational speed of said rotational member so as to rotate said rotational member at least one of from 0 to 360 degrees and 0 to 210-240 degrees as one scan in accordance with said output signal indicative of one cyclic movement from said cyclic movement detector so that said x-ray detector continuously collects the scan data necessary for complete reconstruction of a CT image of one scan for a slice of said living body within a single cycle of said cyclic movement of the part of said living body.