Method for obtaining high-contrast X-ray images and X-ray detector

摘要

A method of obtaining high-contrast X-ray images using an X-ray detector (100) comprising an array of photosensitive detector elements (12) under a scintillator layer (14), each detector element providing a gray level in a pixel array to define an X-ray image, comprising the steps of: - obtaining (S10) a test X-ray image of a predetermined object with the aid of the X-ray detector, - deriving (S12) at least one mathematical variable or at least one function of a variable from the test X-ray image, assuming that the generation and scattering of light in the X-ray image Scintillator layer (14) is understood as a convolution of an input signal of the incident X-ray radiation with a transfer function, provides information about the transfer function, - obtaining (S14) a raw X-ray image of an object to be imaged with the aid of the X-ray detector, and -processing (S16) the raw X-ray image using the at least one size or the at least one function for at least partially canceling the effect of the light propagation within the scintillator layer (14) on the image contrast.