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CT scanner and method for helical scanning of an examination object which has at least one portion undergoing periodic motion
CT scanner and method for helical scanning of an examination object which has at least one portion undergoing periodic motion
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机译：CT扫描仪和用于螺旋扫描检查对象的方法，该检查对象具有至少一部分经历周期性运动
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摘要
At least one embodiment of the present invention relates to a CT scanner and/or a method for helical scanning of an examination object which has at least one portion undergoing periodic motion. In at least one embodiment, the CT scanner includes at least one bearing apparatus, arranged along a system axis of the CT scanner, for bearing the examination object, two scanning systems which can rotate around the system axis and which are arranged coaxially, respectively having a focus from which a beam can be emitted and a flat-design detector array, arranged opposite the respective focus, including a multiplicity of distributed detector elements which can detect the rays of the beam, wherein projection data can be generated by the scanning systems which represents the attenuation of the rays while traversing the examination object, and wherein the bearing apparatus and/or the scanning systems can be displaced along the system axis, a first device/module, preferably an EKG, which can detect and store rest and movement phases of the examination object which has at least one portion undergoing periodic motion in the form of measurement data, and a second device/module which can, based on the measurement data and/or data derived therefrom, trigger and/or control a displacement of the scanning systems and/or the bearing apparatus along the system axis.
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