One way to do an easier study, is to take the patient twice to the room where you have full SGRT- systems installed. Simply simulate the CT- workflow there and record among other things the FB/BH surfaces or BH-window and repeat the simulation after one/two weeks after patient has home- practiced BHs. On the second round measure with the SGRT for example: is it possible to raise the vertical BH- level from the former with the same BH- technique, does the normal breathing recover back to “baseline” better, does the repeatability of the BHs give better results than on the first visit (which may lead to decreased needs to correct the systematic posture errors on the first treatment days).
Marko