Abstract: A medical image viewing device for navigation in X-ray imaging includes a processor. The processor is configured to perform a 3D-2D registration of a preoperative three-dimensional volume based on geometry parameters of an image data provider, which provides fluoroscopy images of an object of interest and a plurality of structures with interfering motions to be removed, for creating digitally reconstructed radiograph images of these structures for each fluoroscopy image. These are subtracted from the respective fluoroscopy images to generate structure-suppressed fluoroscopy images free from interfering motions. Based on these structure-suppressed fluoroscopy images, an angiographic image sequence is generated performing a motion estimation of the structures.

Abstract: (DSA) enables the vascular structure around a heart to be displayed using the injection of a contrast medium while the heart is being observed by an X-ray apparatus. The quality of a DSA sequence can be affected by the breathing of the patient, when under examination. This is because the images forming a DSA sequence are gathered using an X-ray modality, and therefore the independent movement of transparent tissues inside a patient causes motion artifacts to appear in DSA images. According to an aspect of the present invention, a method, device, X-ray system, computer program element, and a computer readable medium are provided which can correct artifacts appearing in DSA images which originate from to the motion of the heart and the motion caused by breathing in a patient.

Abstract: An image processing method and related system to register projection images (AG, MI) only with respect to a motion of a landmark across said images. The motion of the landmark relates to a motion of a region of interest, ROI. The so registered images (AG, MI) are then subtracted from each other to arrive at a difference image that is locally motion compensated and that represents the ROI at good contrast whilst subtraction artifacts can be avoided.

Abstract: (DSA) enables the vascular structure around a heart to be displayed using the injection of a contrast medium whilst the heart is being observed by an X-ray apparatus. The quality of a DSA sequence can be affected by the breathing of the patient, when under examination. This is because the images forming a DSA sequence are gathered using an X-ray modality, and therefore the independent movement of transparent tissues inside a patient causes motion artefacts to appear in DSA images. According to an aspect of the present invention, a method, device, X-ray system, computer program element, and a computer readable medium are provided which can correct artefacts appearing in DSA images which originate from to the motion of the heart and the motion caused by breathing in a patient.

Abstract: A medical image viewing device (14) for navigation in X-ray imaging is proposed, which inter alia comprises a processing unit (30). The processing unit (30) is configured to perform a 3D-2D registration of a preoperative three-dimensional volume based on geometry parameters of an image data providing unit, which provides fluoroscopy images of an object of interest and a plurality of structures with interfering motions to be removed, for creating digitally reconstructed radiograph images of these structures for each fluoroscopy image. These are subtracted from the respective fluoroscopy images to generate structure-suppressed fluoroscopy images free from interfering motions. Based on these, an angiographic image sequence is generated performing a motion estimation of the structures.