Medical Gnomon is a UI element helping user to see current patient orientation in medical imaging applications by following main camera orientation.Medical Gnomon is a UI element helping user to see current patient orientation in medical imaging applications by following main camera orientation.Generally located at bottom left or bottom right of the windows, it can also be referred as "Compass" or "Viewing Cube".Patient space can be adjusted depending on convention you use in your application.You can also select BIPED or QUADRUPED orientation, as deifned by DICOMS's Anatomical Orientation Type Attribute.