| 摘要 |
The invention relates to a system (SYS) for visualizing a flow within a volume of a 3-dimensional (3-D) image, the system comprising a first transfer unit (U30) for applying a first transfer function, which assigns a renderable property to each location of a first plurality of locations within the volume, on the basis of a flow pattern assigned to said location; a second transfer unit (U40) for applying a second transfer function, which assigns a renderable property to each location of a second plurality of locations within the volume, on the basis of a value of the 3-D image assigned to said location; and a mixing unit (U50) for computing a 2-D image based on the renderable property assigned to each location of the first plurality of locations and on the renderable property assigned to each location of the second plurality of locations, wherein the 2-D image visualizes the flow pattern and the 3-D image. The mixing unit can be adapted for computing a renderable property at each location of a third plurality of locations within the volume on the basis of the renderable property assigned to each location of the first and second plurality of locations, and for computing the 2-D image based on the renderable property computed at each location of the third plurality of locations using any suitable volume rendering technique known in the art, for example, the direct volume rendering technique. Alternatively, the system may be adapted for computing a first 2-D image based on the renderable property assigned to each location of the first plurality of locations and a second 2-D image based on the renderable property assigned to each location of the second plurality of locations, and for alternatingly displaying the first and second 2-D image or for merging the first and second 2-D image. |
