Rand Stereotactic Instrument for Yttrium Hypophysectomy. Los Angeles: Trent H. Wells of the Mechanical Development Co., 1953. This instrument was used to implant yttrium 90 oxide into the pituitary gland. Probes were introduced by way of the nasal...
Wu skull fixed system. China. Used in the treatment of Parkinson's disease, the instrument was attached to a burr hole in the skull. Angular adjustments allowed the lesion electrode to be introduced into the deep brain structures; x-rays were used...