IMRIS Head Fixation Devices are designed to securely position the patient in the desired surgical position and enable optimal patient positioning for surgical access and intraoperative imaging. The three-piece design of the HFD – with table mount, linkage system, and skull clamp – enables the surgeon to place the patient in the desired prone, supine, or lateral position, and then set and maintain the patient’s head in that desired position. In the prone position, the surgeon can position the patient’s head lower than the level of the table while maintaining proper position for scanning. IMRIS HFDs are constructed of robust, MR-conditional materials that provide stability and durability for a wide range of adult and pediatric patient head sizes.