Implemented function to find the Peak timepoint of the volume over the specified Vector ROI.  Exposed this function under "MainMenu>Volume>AdvanceTo" submenu.

Improved User Interface of the "Blood Vessel Segmenter" function specific for DCE.  User is NOT required any longer to scroll in time to the timepoint of the desired vessel peak.

Updating the Vessel Finder dialog box.

AutoFocus 4D Registration:  Re-engineered previous design that was creating a copy of the original 4D volume in memory, so it uses precisely half of the memory of the previous design.