134 results about "Digital subtraction angiography" patented technology

The invention discloses a rapid registering and splicing method used for a three-dimensional digital subtraction angiography image. The method comprises the following steps: a) two volume data images of the three-dimensional digital subtraction angiography image are selected, and the overlapped areas are extracted to denote as sub-volume-data images; b) maximum intensity projection is performed on the sub-volume-data images at a coronal surface, a sagittal surface and a cross section respectively so that MIP1 and MIP2 images are formed; c) first time of registering is performed on the MIP1 and MIP2 images respectively at the aforementioned two-dimensional surfaces; d) and second time of registering is performed on the two volume data images in three-dimensional space according to the result of the first time of registering, then the overlapped areas are fused and finally a panoramic three-dimensional subtraction volume data image is formed via splicing. According to the rapid registering and splicing method used for the three-dimensional digital subtraction angiography image, influence of image data quality on registering precision can be avoided, and registering and splicing processing time can be greatly shortened.

The invention relates to a medical image processing method which is characterized in that images formed by three-dimensional fast spin echo imaging collected by a magnetic resonance imaging system in the focus area of a patient and blood vessel images collected by a digital subtraction angiography machine are subjected to reconstruction, color inverting, cutting, 3D-3D fusion and 3D-2D registering through a post-processing work station of the digital subtraction angiography machine, so that three-dimensional blood vessel graphs can be overlapped on a real-time radio-fluoroscopic image. Therefore, by adopting the medical image processing method, real-time imaging guide can be performed during nerve involvement surgeries for blocked blood vessels, the near end and far end of the closed section of the blood vessel can be shown simultaneously through imaging, and physicians can clearly get known of conditions in the focus areas and further can perform operating better.