Method and device for obtaining a volume data set of a mobile tissue or organ of a patient
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Abstract
A method and a device for obtaining a volume data set of a mobile tissue or organ of a patient by a C-arm X-ray device are provided. An electromagnetic sensor of a position detection system is arranged indirectly on the tissue or organ. The X-ray device obtains a plurality of X-ray projections from the tissue or organ from various projection directions. A first method consists of reconstructing a volume data set from the X-ray projections, in which the electromagnetic sensor adopts a position characterizing a displacement phase of the tissue or organ. A second method consists of reconstructing a volume data set from the X-ray projections captured when the electromagnetic sensor was located in a position characterizing a displacement phase of the tissue or organ. A third method does not capture an X-ray projection for the reconstruction if the electromagnetic sensor is located in a position characterizing a displacement phase.
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Citations
34 Claims
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1-14. -14. (canceled)
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15. A method for obtaining a volume data set of a mobile object of a patient by a C-arm X-ray device and an electromagnetic position detection system, comprising:
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arranging an electromagnetic sensor of the electromagnetic position detection system on the object; recording a plurality of X-ray projections of the object from various projection directions by the C-arm X-ray device; detecting the electromagnetic sensor in the X-ray projections; and reconstructing the volume data set from the X-ray projections in which the electromagnetic sensor corresponds to a position characterizing a determined displacement phase of the object. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A device for reconstructing a volume data set of a mobile object of a patient, comprising:
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a C-arm X-ray device that recodes a plurality of X-ray projections of the object from various projection directions; an electromagnetic position detection system comprising an electromagnetic sensor that is arranged on the object; and a computational device that reconstructs the volume data set from the X-ray projections in which the electromagnetic sensor corresponds to a position characterizing a determined displacement phase of the object.
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Specification