Volume Analysis Menu: Vocal - GE Voluson Swift Instructions For Use Manual

3D and 4D Mode

Volume Analysis Menu: VOCAL

Manual Trace
Trace Finder
Semi-auto Trace Finder
Sphere
8-36
•
Construction of a virtual shell around the contour of the lesion. The wall thickness of the
shell can be defined. The shell can be imagined as a layer of tissue around the lesion,
where the tumor vascularization takes place.
•
Automatic calculation of the vascularization within the shell by 3D color histogram by
comparing the number of color voxels to the number of gray scale voxels.
The follow-up control of tumor volume and vascularization delivers information on the proper
dose of medication or radiation and is therefore a measure for the success of treatment. After
definition of a contour in 3D space a wide range of functionality is given:
•
definition of a shell contour
•
visualization of a (shell) contour as a surface or wire mesh
•
volume calculation of a (shell) contour
•
histogram calculation of ultrasound tissue inside a (shell) contour
•
visualization of ultrasound tissue inside a (shell) contour as a rendered image
•
niche presentation of contour and slices
•
cine rotation calculation
The basic idea behind VOCAL is the combination of 3D ultrasound tissue (presented as
voxels) and the geometric information of surfaces in a 3D data set. The main interest of
VOCAL is the volume calculation of tumors or lesions.
Figure 8-23 Volume Analysis Menu: VOCAL
This function allows you to manually outline any lesion by means of the trackball.
Alternatively, trace the object on the touch panel with your finger. The number of
manually generated contours depends on the selected rotation step.
This function allows you to outline any lesion by tracing the object on the touch
panel with your finger. The number of the semi automatic generated contours
depends on the selected rotation step.
Compared to
90º rotation) have to be traced. The boundary of the ROI at all other rotation steps
is found by means of the contour detection algorithm via automatic interpolation. We
recommend to select
This computer assisted function is useful if you want to outline the surface of a
sphere. Using this function a sphere round the main contour axis is generated within
the two green arrows.
Trace Finder , only 2 planes (one at the initial position, the other one at
9˚ or 15˚ rotation step.
Voluson™ SWIFT / Voluson SWIFT+ Instructions For Use
5831612-100 Revision 4