Volume rendering using surface guided cropping
Assignee3Shape A/S
InventorsAnders Kjær-Nielsen, Adam Carsten Stoot
Life of this patent
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Abstract
Disclosed is surface guided cropping in volume rendering of 3D volumetric data from intervening anatomical structures in the patient's body. A digital 3D representation expressing the topography of a first anatomical structure is used to define a clipping surface or a bounding volume which then is used in the volume rendering to exclude data from an intervening structure when generating a 2D projection of the first anatomical structure.
Claims17
A method for selective volume rendering of 3D volumetric data from a patient, the method comprising:
- obtaining a 3D volumetric data set comprising data for a first and a second anatomical structure in the patient's body, wherein an occlusal surface of the first anatomical structure has a topography surface;
- obtaining a first digital 3D representation comprising a first portion of a surface scan of the topography surface of the occlusal surface of the first anatomical structure;
- defining a bounding box having a first clipping surface and a second clipping surface, the bounding box defining a portion of the 3D volumetric data set to be used in volume rendering;
- replacing the first clipping surface at least partly with the topography surface of the occlusal surface of the first anatomical structure, wherein the topography surface that replaced the first clipping surface is generated only from the surface scan of the first digital 3D representation;
- and
- generating a 2D projection of the first anatomical structure by volume rendering of the set of 3D volumetric data defined by the bounding box, where the first clipping surface is applied to exclude 3D volumetric data relating to the second anatomical structure, wherein the 2D projection is generated only from the 3D volumetric data set.
A method for selective volume rendering of 3D volumetric data from a patient, the method comprising:
- obtaining a 3D volumetric data set comprising data for a first and a second anatomical structure in the patient's body, wherein an occlusal surface of the first anatomical structure includes a topography surface;
- subsequently obtaining a first digital 3D representation comprising a first portion of a surface scan of the topography surface of the occlusal surface of the first anatomical structure;
- defining a bounding volume using at least the topography surface of the occlusal surface of the first digital 3D representation, wherein the topography surface is generated only from the surface scan of the first digital 3D representation;
- and
- generating a 2D projection of the first anatomical structure by volume rendering of the set of 3D volumetric data, where the bounding volume is applied to exclude 3D volumetric data relating to the second anatomical structure, wherein the 2D projection is generated only from the 3D volumetric data set.
Dependencies are inferred from the claim text.