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Fig. 1 —Screen shot shows FREEZE software tool. Rectangle on axial image
shows user-defined region of interest (ROI) in which motion is analyzed.
FREEZE operates on user-friendly interface in which user can zoom in or out
and pan and level image; user can also select different time frames and pick
most suitable frame for ROI selection. After ROI selection, algorithm starts
automatically and result (software-prescribed trigger delay = Tdsf)
is sent directly to scanner. Another option is that user can select restricted
time window (on displacement vs time plot [small window]) for which period of
minimal motion should be analyzed by algorithm.
