Combined use of a new target-centered arc system with the BRW floor stand and phantom base for a wider range of approaches and applications in stereotaxy of the head and neck.

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A unique target-centered arc system has been developed which combines the azimuth and declination angle approach concept of the standard BRW arc with the anteroposterior, lateral and vertical movements of the earlier Todd-Wells Guide for maximal versatility of image-guided stereotaxy. The arc system mounts on the BRW floor stand and provides completely unobstructed approaches to the upper hemisphere, base of the skull, posterior fossa or cervical region. It is ideally adapted for implant arrays and laser surgery. A new transferable phantom pointer affords target confirmation using the BRW phantom base.