摘要:
A method and an apparatus are disclosed for visualizing tubular anatomical structures, in particular vessel structures, in medical 3D image records. The method according to at least one embodiment of the invention includes: providing 3D image data of the tubular anatomical structure; determining a centerline of the tubular anatomical structure in the 3D image data; selecting a point of the centerline; generating a 2D slice image assigned to the point, the 2D slice image representing a sectional plane in the 3D image data, which sectional plane is arranged relative to a section of the centerline, including the point and a prescribable section start point and section end point of the section, such that an orthogonal distance from the sectional plane for each centerline point of the section is less than or equal to a prescribed value R, the value R being selected to be greater than a value Rkrit, and Rkrit specifying the value for which precisely one such sectional plane can be determined; and visually displaying the 2D slice image.
摘要:
A method and an apparatus are disclosed for visualizing tubular anatomical structures, in particular vessel structures, in medical 3D image records. The method according to at least one embodiment of the invention includes: providing 3D image data of the tubular anatomical structure; determining a centerline of the tubular anatomical structure in the 3D image data; selecting a point of the centerline; generating a 2D slice image assigned to the point, the 2D slice image representing a sectional plane in the 3D image data, which sectional plane is arranged relative to a section of the centerline, including the point and a prescribable section start point and section end point of the section, such that an orthogonal distance from the sectional plane for each centerline point of the section is less than or equal to a prescribed value R, the value R being selected to be greater than a value Rkrit, and Rkrit specifying the value for which precisely one such sectional plane can be determined; and visually displaying the 2D slice image.
摘要:
A method is disclosed for visualizing tubular anatomical structures, in particular vessel structures, in medical 3D image records. In at least one embodiment, the method includes the following: firstly, providing 3D image data of the tubular anatomical structure; secondly, displaying a first image of the tubular anatomical structure on the basis of the 3D image data; thirdly, selecting an image voxel which is assigned to the tubular structure in the 3D image data on the basis of the first image; fourthly, determining a centerline of the tubular anatomical structure in a prescribably delimited region of the 3D image data comprising the image voxel; fifthly, selecting a point of the centerline; sixthly, generating one or more 2D slice images assigned to the point, the 2D slice images in each case representing a sectional plane in the 3D image data; and seventhly, displaying the 2D slice images.
摘要:
A method and system for automatically associating coronary arteries with regions of the myocardium to which the arteries supply blood is described. The method uses three dimensional image data of a patient, and an axial image slice is used to identify candidate locations of the aorta. Candidate aorta centroid locations are evaluated to eliminate spurious identifications, and the identified aorta is used to locate the left ventricle of the heart with respect thereto. Arteries of the coronary artery tree may be located by segmentation of contrasted images, and the individual arteries may be identified by skeletonization of the segmented arteries. The skeletonized arteries are projected onto an image of the patient heart, and may be associated with specific regions of the myocardium.
摘要:
A method and system for automatically associating coronary arteries with regions of the myocardium to which the arteries supply blood is described. The method uses three dimensional image data of a patient, and an axial image slice is used to identify candidate locations of the aorta. Candidate aorta centroid locations are evaluated to eliminate spurious identifications, and the identified aorta is used to locate the left ventricle of the heart with respect thereto. Arteries of the coronary artery tree may be located by segmentation of contrasted images, and the individual arteries may be identified by skeletonization of the segmented arteries. The skeletonized arteries are projected onto an image of the patient heart, and may be associated with specific regions of the myocardium.
摘要:
A tensioner for preloading a bearing, the bearing including a first bearing ring and a second bearing ring and being configured to transmit a preload force in a radial direction and/or in an axial direction between the first bearing ring and the second bearing ring, the tensioner including a component coupled to the first bearing ring, a support element for supporting the component relative to the second bearing ring such that a closed force flow arises from the first bearing ring via the component and the support element to the second bearing ring, and a sleeve disposed in an axially displaceable manner between the first bearing ring and the component, the sleeve being configured to change the preload force in response to an axial displacement of the sleeve with respect to the component.
摘要:
A tensioner for preloading a bearing, the bearing including a first bearing ring and a second bearing ring and being configured to transmit a preload force in a radial direction and/or in an axial direction between the first bearing ring and the second bearing ring, the tensioner including a component coupled to the first bearing ring, a support element for supporting the component relative to the second bearing ring such that a closed force flow arises from the first bearing ring via the component and the support element to the second bearing ring, and a sleeve disposed in an axially displaceable manner between the first bearing ring and the component, the sleeve being configured to change the preload force in response to an axial displacement of the sleeve with respect to the component.