Patent ID: 6480561
Filing Date: 2002-11-12
Classification: A61B

Abstract:
A computed tomography method for forming a scanogram by means of a computed tomography apparatus which includes a scanning unit for the acquisition of measured values, wherein the scanning unit is provided with a radiation source and a detector unit and is rotateable about an axis of rotation, and wherein a relative motion of the scanning unit includes a displacement relative an examination zone in a direction parallel to the axis of rotation during an acquisition of the measured values within the examination zone, the method comprising the steps of:rotating the scanning unit about the axis of rotation during the acquisition of the measured values, reconstructing a 3D data set from the measured values which is three-dimensionally dependent on the attenuation of the radiation in the examination zone covered by the scanning unit, calculating at least one synthetic projection image from the 3D data set, calculating an attenuation of the radiation in the examination zone from the 3D data set, and controlling at least one of the quality and/or the intensity (I) of the radiation during an acquisition of measured values during a subsequent CT examination based on the attention.