| 摘要 |
The invention relates to the field of digital processing of X-ray images and can be used in digital subtraction angiography to compensate for impact of involuntary patient movement and movement of internal organs on image of the vascular system. The technical result of the claimed invention is the improvement of diagnostic value of subtraction angiographic images by eliminating artifacts caused by the motility of anatomical structures. At the stage of registration of digital images, the technical result is achieved as a search for characteristic details is performed for each image. According to the shift of the details, an expectable shift of patient organs is determined. Then, the segmentation of image from the pre-contrast series in the region of homogenous warping is performed; for each region a geometrical transformation is calculated and corresponding geometrical transformations are performed for each region of a series of pre-contrast digital images. |
