I have scanned from the head so long ,I get totally disoriented the other way.
This I think is a handycap I hope others can avoid.
I see no reason not to do what works for YOU. Stand on your head if you want to
as long as the study quality is not compromised.
I see some advantage in trying various
positions for all studies-it dilutes the wear and tear your body parts and makes
you more flexable when other elements cannot be changed.