Method and device for recording a projection dataset of an object using a plurality of X-ray sources
AssigneeSiemens Aktiengesellschaft
InventorsJan Boese, Frank Dennerlein
Life of this patent
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Abstract
A method for recording a projection dataset of a object to be recorded using a plurality of X-ray sources is provided, which X-ray sources are spaced apart from one another on average by an angle α relative to an isocenter. A plurality of projection images from different recording directions are recorded in succession while activating the corresponding X-ray sources. Two X-ray sources are activated in succession having a spacing of at least 2 α relative to the isocenter.
Claims12
A method for recording a projection dataset of an object using a plurality of X-ray sources spaced apart from one another on average by an angle α relative to an isocenter, comprising:
- activating at least two of the X-ray sources in a succession having a spacing of at least 2 α relative to the isocenter;
- and
- recording a fraction of the projection dataset in the succession from different recording directions while activating the at least two of the X-ray sources,
- wherein a preliminary 3D image is reconstructed from the fraction of the projection dataset after 1/n of the X-ray sources are activated before end of the recording of all the projection dataset, and
- wherein the preliminary 3D image is enhanced and improved after further projection directions are available.
An X-ray system for recording a projection dataset of an object, comprising:
- a plurality of X-ray sources spaced apart from one another on average by an angle α relative to an isocenter;
- a control unit that activates at least two of the X-ray sources in a succession having a spacing of at least 2 α relative to the isocenter;
- and
- an X-ray detector that records a fraction of the projection dataset in the succession from different recording directions while activating the at least two of the X-ray sources,
- wherein a preliminary 3D image is reconstructed from the fraction of the projection dataset after 1/n of the X-ray sources is activated before end of the recording of all the projection dataset, and
- wherein the preliminary 3D image is enhanced and improved after further projection directions are available.
Dependencies are inferred from the claim text.