Changes from Stradwin 4.5 to 4.6
It is now possible to draw up to 30 different objects, and the default colours for these objects have been updated.
There have been some minor changes in drawing contours: contours can only be closed when clicking near to the starting point; contour simplification includes the first contour point; objects with an opacity of zero are not drawn in the 3D window.
When importing a surface from an external file, it is also possible to define a transformation matrix which will be applied to the vertices and surface normals as it is loaded.
The femur SDM has been updated.
There is a new 'DICOM display settings' config dialog box which can be used to explicitly set windowing parameters and calibrate QCT data.
Stradwin can recognise four QCT phantoms: Mindways Solid/Liquid K2PH04, QRM Bone HA and Siemens Osteo HA. Calibration (from Hounsfield Units to density) is stored in three new resources.
Stradwin can now load certain types of data in the ITK MetaImage '.mhk' format.
Cortical thickness measurement
When estimating cortical thickness, the inner and outer density levels and rectangular blur are now shown, and can be held constant during optimisation if desired.
A new line 'width' slider causes data to be aggregated (smoothed) normal to the line direction: this is useful for analysing high resolution data.
There is a new 'FWHM' button for calculating Full-Width Half-Maximum thickness estimates.
Estimation is now possible closer to the edges of the data set.
The inner density level (trabecular density close to the cortex) can now be mapped to the cortical surface.
The smoothing filters now work correctly when showing IVUS data.