Abstract: An apparatus for delineating a structure of interest includes: a plane selection interface for selecting a contouring plane of selectable orientation in a three-dimensional image or map; a contouring interface for defining a contour in the selected contour plane; and a mesh constructor configured to construct a three-dimensional polygonal mesh delineating the structure of interest in the three-dimensional image or map. The mesh constructor positions constrained vertices on or near a plurality of non-coplanar delineation contours defined using the contouring interface.

Abstract: An apparatus for delineating a structure of interest includes: a plane selection interface for selecting a contouring plane of selectable orientation in a three-dimensional image or map; a contouring interface for defining a contour in the selected contour plane; and a mesh constructor configured to construct a three-dimensional polygonal mesh delineating the structure of interest in the three-dimensional image or map. The mesh constructor positions constrained vertices on or near a plurality of non-coplanar delineation contours defined using the contouring interface.

Abstract: An apparatus for delineating a structure of interest includes: a plane selection interface (32, 70) for selecting a contouring plane of selectable orientation in a three-dimensional image or map (80); a contouring interface (32, 72) for defining a contour in the selected contour plane; and a mesh constructor (74, 76) configured to construct a three-dimensional polygonal mesh (90) delineating the structure of interest in the three-dimensional image or map. The mesh constructor positions constrained vertices (102, Vc) on or near a plurality of non-coplanar delineation contours (84, Ccor, Cobl) defined using the contouring interface.

Abstract: A respiratory marker (40, 140, 240, 340, 440) includes an elongated detectable portion (42, 342, 442) that is operatively coupled with respiration of an imaging subject such that the elongated detectable portion moves with the respiration. The elongated detectable portion is arranged to intersect images acquired by an imaging scanner (10) at different times and at different positions along a scanner axis (20), and is detectable as a marker feature in the images. A marker position finder (52, 54) is configured to determine positions of the marker features in the images.

Abstract: A method and apparatus for planning a radiation therapy are disclosed. A radiation dose distribution is adapted on the basis of shape and position variations of the organs of interest determined from a comparison of a first image and a second image which were taken at different points of time during the radiation treatment process.

Abstract: An apparatus for delineating a structure of interest includes: a plane selection interface (32, 70) for selecting a contouring plane of selectable orientation in a three-dimensional image or map (80); a contouring interface (32, 72) for defining a contour in the selected contour plane; and a mesh constructor (74, 76) configured to construct a three-dimensional polygonal mesh (90) delineating the structure of interest in the three-dimensional image or map. The mesh constructor positions constrained vertices (102, Vc) on or near a plurality of non-coplanar delineation contours (84, Ccor, Cobl) defined using the contouring interface.

Abstract: A respiratory marker (40, 140, 240, 340, 440) includes an elongated detectable portion (42, 342, 442) that is operatively coupled with respiration of an imaging subject such that the elongated detectable portion moves with the respiration. The elongated detectable portion is arranged to intersect images acquired by an imaging scanner (10) at different times and at different positions along a scanner axis (20), and is detectable as a marker feature in the images. A marker position finder (52, 54) is configured to determine positions of the marker features in the images.