Computed tomography scanner and method for producing images by means of it

Abstract

To generate images, in which a first row area of a multiple-row detector is illuminated with a first X-ray spectrum and a second row area of the multiple-row detector, trailing in the direction of travel, is illuminated with a second X-ray spectrum, image data is recorded at a pitch chosen such that one slice image can be reconstructed in each case for a sectional position for the first and the second row area. Correspondingly, for the sectional position, the respective slice image for the first and the second row area is reconstructed. For a third row area, illuminated with the first and the second X-ray spectrum, a reference sectional image is reconstructed as a slice image. To generate motion-reduced first and second spectral images assigned to the first and second row area respectively, the slice images of the first and second row areas are registered to the reference sectional image.

Description

technical field [0001] The invention relates to a method for producing an image by means of a computed tomography scanner, in particular by means of a computed tomography scanner which transmits an object using two different x-ray spectra. Furthermore, the invention relates to such a computed tomography scanner. Background technique [0002] In X-ray imaging, in particular in the medical field, methods are frequently used in which the object to be observed, in particular the body of a patient, is irradiated with two different X-ray spectra in order to be able to better visualize different type of organization. The x-ray images produced with the aid of the different x-ray spectra are usually combined with one another for visualization. Alternatively, the X-ray imaging technique of computed tomography, also known as "separation filter" or "dual beam dual energy", is used here. Here, a ray filter is introduced into the beam path between the X-ray source and the X-ray detecto...

AI Technical Summary

Problems solved by technology

Although it is known in the field of X-ray imaging to register images recorded under different conditions with one another, that is to say in particular to deform the structures of the images such that they match the corresponding structures of the other images, and It is thereby covered, but the method can also be limited in particular in the case of locally varying degrees of motion within the image region

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