T19932 -Removed the seperate windows for US and PA images -PAUSViewer Plugin does now work -rendering of the paus is done in Ultrasound plugin -level windows work and are set to useful default values -paus has the scale overlay -fix: after reactivating the images are not being showed?
Signed-off-by: Franz Sattler <sattler@ad.dkfz-heidelberg.de>