The Supine Breast Cushions can be easily installed on Meicen C & Y Series Baseplates by adapter cushion, or can also be indexed directly to couchtops. The Arm Support Cushions is ergonomically designed for patient comfort. It can be used alone or in conjunction with the Meicen C & Y Series Baseplates. The Hand Grips can be adjusted easily to improves the accuracy and comfort of repeatability.