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Fig. 4B —PowerPoint (Microsoft) screen shots show refinement of contours of
pancreas (top), inferior vena cava and aorta (middle), and
vertebral body (bottom). Objects were drawn at later stage but are
shown for relevance. Dashed lines separate structures to show they have been
captured from different screens to show anchor points of all objects (Edit
Points can be applied to only one object at same time). Adjusted refined
drawing. Techniques used are dragging anchor points to more precise location,
adding points by clicking and dragging, and deleting points. Symmetric
repositioning of anchor points produces shapes that are closer to symmetric,
as is case with aorta and inferior vena cava.
