Build 464 is released.

 1. Spine Disc compression (Jacobian map) workflow documentation created.

2. Corrected the IPP (image position patient) after  the 4D volume crop.

3. Implemented ABT subtest for the FLAIR SYNTH  Training Reg\Norm.

4. Implemented Unet3D variant using the Pool\Unpool with indices (instead of customary MaxPool).

5. Implemented Volume>AdvanceTo>Timepoint of Max Signal

6. Allowed PET volumes to be of INT type too, so some workflows now enabled.

7.  PET-FDG motion correction : changed default motion correction parameters.

8. LayerControl dialog:  fixed the defect when the SelectedItem was outside the list window, then after

any operation it would jump to display the selected item, etc.

9. Implemented Radial Forward AutoFocus4D method, specifically to reduce jittering issues in FDG motion correction.

10.  WorkFlow>Brain FDG-DCE:  implemented an automatic Target ROI calculation. User typically

advances to about 1000 sec, Chooses 4D PET, Brain Atlas. Mask is automatically produced.

11. Layer Control dialog: made it more intuitive by splitting the Remove Active\Unmarked functions.

12. AutoFocus4D dialog:  now displays the current Dynamic Index used as the Target of registration.

13. Combine WMSEED {X,Y,Z}  GUI function into a single WMseed menu item.

14. Fixed bug when all 4D layers are removed, the current timepoint is still >0.

15. Fixed bug in WMseed and EdgeWave function when there are both 3D and 4D layers, current T>0 operation is called on 3D layer. Crash due to the incorrect timepoinyt.

16. Replaced URAL naming on GUI to "Normalized Gradient Field".