1987
The first Gamma Knife in the US in 1987.
Deep brain stimulation (DBS) is a neurosurgical [[procedure]] introduced in 1987, involving the implantation of a medical device called a neurostimulator (sometimes referred to as a 'brain pacemaker'), which sends electrical impulses, through implanted electrodes.
In 1987 Yaşargil defined cerebral microarteriovenous malformations as a subgroup of pial arteriovenous malformation characterizad by a nidus of 1 cm or smaller 1).
Although Griffith and Veerapen reported a case of endonasal approach to the sellar region in 1987, the transsphenoidal endonasal approach did not gain popularity. 2)
Atypical teratoid rhabdoid tumor was originally described a histological variant of Wilm’s tumor in 1978.
Primary intracranial diseases were initially reported in 1987 and subsequently, defined as a distinct CNS neoplasm in 1996 and added to the World Health Organization (WHO) Brain Tumor Classification in 2000 (grade IV).
Torg-Pavlov ratio, (AKA Pavlov ratio, Torg ratio) or so called “Canal Body Ratio” CBR was first described in 1987 by Pavlov et al., it represented the ratio between the sagittal diameter of the spinal canal and the sagittal diameter of the corresponding vertebral body and was first measured on lateral cervical spine X-ray. A ratio of <0.7–0.8 indicated a significant spinal stenosis with high risk of neurological injury 3) 4): the ratio of the AP diameter of the spinal canal at the mid VB level to the VB at the same location. A ratio < 0.8 is sensitive