Record and reconstruct x-ray image data on the basis of elliptical cylinders
AssigneeSiemens Healthcare GmbH
InventorAndreas Fieselmann
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Abstract
A recording and reconstruction of image data of a predetermined object of an examination object is performed by an x-ray system. The x-ray system determines a number of elliptical cylinders so that the object is arranged entirely in the volumes of the cylinders. Data within each of the cylinders is recorded by the x-ray system. The image data of the object is reconstructed based on the data recorded for each of the cylinders.
Claims12
A method for recording and reconstructing image data of a predetermined object of an examination object by means of an x-ray system, which comprises the following steps of:
- determining a number of elliptical cylinders so that the predetermined object is disposed entirely in volumes of the elliptical cylinders;
- recording data within each of the elliptical cylinders by means of the x-ray system, wherein when the data within each of the elliptical cylinders is recorded for each of the elliptical cylinders, a collimator of the x-ray system is set such that a specific angle, at which x-rays are emitted from an x-ray source of the x-ray system, is selected in dependence on dimensions of a respective cylinder, and the data within the respective cylinder is recorded with the x-rays which are only emitted at the specific angle;
- and
- reconstructing the image data of the predetermined object based on the data recorded for each of the elliptical cylinders.
An x-ray system, comprising:
- a detector;
- an x-ray source for emitting x-rays directed onto said detector;
- a controller for controlling said x-ray source and said detector;
- an image computing unit for receiving data recorded by said detector;
- a collimator;
- and
- the x-ray system being configured to record and reconstruct image data of a predetermined object of an examination object, by the x-ray system determining a number of elliptical cylinders so that the predetermined object is disposed entirely in volumes of the elliptical cylinders, by the x-ray system recording data within each of the elliptical cylinders, and based on the data recorded for each of the elliptical cylinders, by the x-ray system reconstructing the image data of the predetermined object by means of said image computing unit, wherein the x-ray system is configured, during the recording of the data within each of the elliptical cylinders for each of the elliptical cylinders, to set said collimator of the x-ray system such that a specific angle, at which x-rays are irradiated from said x-ray source, is selected in dependence on dimensions of a respective cylinder, and in order to record the data within the respective cylinder with the x-rays which are only emitted at the specific angle.
An electronically readable non-transitory data carrier with electronically readable control information stored thereupon, said control information configuring a controller to:
- determine a number of elliptical cylinders so that the predetermined object is disposed entirely in volumes of the elliptical cylinders;
- record data within each of the elliptical cylinders by means of an x-ray system, wherein when the data within each of the elliptical cylinders is recorded for each of the elliptical cylinders, a collimator of the x-ray system is set such that a specific angle, at which x-rays are emitted from an x-ray source of the x-ray system, is selected in dependence on dimensions of a respective cylinder, and the data within the respective cylinder is recorded with the x-rays which are only emitted at the specific angle;
- and
- reconstruct the image data of the predetermined object based on the data recorded for each of the elliptical cylinders.
Dependencies are inferred from the claim text.