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SDX is intended for use in Radiation therapy as an aid in allowing the patient and treatment staff to visualize a patients breathing process and to optimize breathing to limit internal motion during imaging & treatment. The SDX System including the Automatic Gating Module is used to provide respiratory synchronization for radiation therapy imaging & treatment.

The SDX Systems are intended to be used in conjunction with a Radiation Therapy systems (imaging & treatment) requiring operator intervention to start & stop radiation. The Automatic Gating Module is intended to facilitate the interface between operators, whilst ensuring at all times the operators have complete control & maintain the final decision in imaging & treatment. The Automatic Gating Module provides the direct interface between the SDX Module and the Imaging / Radiation Treatment equipment; providing channels on : device communication / identification, recommendation to start Patient Imaging / Radiation, order (or recommendation) to stop patient Imaging / Radiation. The Automatic Gating Module is connected, via cabling, to the Radiation Therapy systems via their own "external interfacing equipment". The use of the Automatic Gating Module allows the SDX to optimize breathing to limit internal motion during imaging & treatment independent to the breathing method chosen, Breath Hold, Free Breathing, etc. Thus patients breathing pattern allows the selection of the gating levels, facilitate the starting & stopping of the radiation beam between the two defined levels.