Method for generating an X-ray image of an extremity of a patient with a scale of length
AssigneeSiemens Aktiengesellschaft
InventorThomas Schmitt
Life of this patent
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Abstract
In an X-ray installation comprising an X-ray source, a patient support, an X-ray detector and an electronic evaluation system, a distance is determined from an extremity of a patient which is to be imaged to the X-ray detector and is made available as an electronic data value to the electronic evaluation system. If the distance from the X-ray source to the X-ray detector as an electronic data value is also known, then a scale can be calculated for the X-ray image from the two distances on the basis of the imaging laws for the generation of the X-ray image, which scale can be faded into the X-ray image or else electronically assigned to this image for an interrogation of coordinates.
Claims13
A method for generating an X-ray image of an extremity of a patient with a scale of length, comprising:
- locating the patient in a patient presentation area adapted to facilitate the X-ray image;
- arranging an X-ray source and an X-ray detector between the patient;
- determining a first distance measured from the X-ray source to the X-ray detector;
- communicating the first distance to an electronic evaluation system as a first electronic data value;
- determining a second distance measured from the extremity to the X-ray detector via a light-source device arranged stationary in relation to the X-ray detector, the light-source device comprising a displaceable light source having an electronically determinable distance from the X-ray detector, the light source switched on and displaced until the light beam shines on to the extremity;
- communicating the second distance to the electronic evaluation system as a second electronic data value;
- calculating a scale for the X-ray image via the first and second electronic data values via an electronic evaluation system;
- recording an X-ray image via the X-ray source and the X-ray detector while keeping the position of the patient unchanged;
- and
- associating the calculated scale with the X-ray image.
A method for generating an X-ray image of an extremity of a patient with a scale of length, comprising:
- locating the patient in a patient presentation area adapted to facilitate the X-ray image;
- arranging an X-ray source and an X-ray detector between the patient;
- determining a first distance measured from the X-ray source to the X-ray detector;
- communicating the first distance to an electronic evaluation system as a first electronic data value;
- determining a second distance measured from the extremity to the X-ray detector via a camera arranged stationary in relation to the X-ray detector, the camera having an electronically determinable distance from the X-ray detector;
- communicating the second distance to the electronic evaluation system as a second electronic data value;
- calculating a scale for the X-ray image via the first and second electronic data values via an electronic evaluation system;
- recording an X-ray image via the X-ray source and the X-ray detector while keeping the position of the patient unchanged;
- and
- associating the calculated scale with the X-ray image.
Dependencies are inferred from the claim text.