GE Voluson S6 Basic User Manual page 336

Volume Mode
9-118
Definition of a Shell Contour (Geometry)
Shell Contour is, to define a "thickness"' of the "reference"' surface
The basic idea of a
geometry.
The "'parallel" contours shown in the image define the "parallel" surface geometry (describing
the shell). The "parallel" contours are either defined symmetrically to the reference contour or
limited to one direction, inside or outside. The
inside surface and therefore it is possible to distinguish between points enclosed by the shell
geometry and points outside of it. A
and outer surface geometry. If no
consists of the reference surface (outside surface) and an inner point (the inside surface being
degenerated).
Display of a Shell Geometry (contour rendering)
The shell geometry can be visualized as "Skin" or "Wire Mesh".
review: Render Mode and Display of the Shell Geometry
124 )
The image shows the different visualization techniques. VOCAL shows a surface Mesh.
Volume Rendered Image of a Shell Contour
The shell contour is used to define which voxels in the 3D ultrasound dataset are parts of the
shell geometry and which are outside. Voxels outside the shell contour are not displayed in the
Volume Rendered image.
Shell Geometry consists of one outside and one
Shell Contour represents all points enclosed by the inner
Shell Contour is defined explicitly, the Shell Geometry
(chapter 'VOCAL - Edit' on page 9-
Voluson® S6/S8 Basic User Manual
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