Follow the link below to read about the levels of motion detected among patients immobilized with a closed facemask or one of two open-face designs. These are part of the results of the Phase III OPEN Study. This study ran in SLRON and a total of 230 patients participated on the study over an 18 month period.
https://www.sciencedirect.com/science/article/abs/pii/S0167814025044457