Authors' objectives The objective of this technology review was to assess the efficacy of gamma knife stereotactic radiosurgery (SRS) in the treatment of arteriovenous malformations, acoustic neuroma, cerebral metastases and trigeminal neuralgia, the latter representing a non-invasive approach to precision ablation for benign conditions. The efficacy of gamma knife relative to microsurgery and ...

Background/Aims: Constant pain, especially if prominent, is sometimes considered incompatible with a diagnosis of typical idiopathic trigeminal neuralgia. This study aims to clarify the frequency of patient-reported constant pain in patients with medically intractable, typical, idiopathic trigeminal neuralgia as diagnosed with standard clinical parameters and confirmed by the response to a modi...

1.1 Tao and the Art of Knife Maintenance Good chefs know the importance of maintaining sharp knives in the kitchen. What ’ s their secret? A well-worn Taoist allegory offers some advice. The king asks about his butcher ’ s impressive knife-work. “ Ordinary butchers, ” he replies “ hack their way through the animal. Thus their knife always needs sharpening. My father taught me the Taoist way. I ...

Stereotactic radiosurgery with the gamma knife delivers focused radiation from a cobalt-60 source in a single session to a pituitary tumour with minimal radiation to the adjacent normal brain tissue. Currently, gamma knife radiosurgery is predominantly used to treat failed pituitary surgery, although it has a role as a primary treatment for patients unwilling or unsuitable, for medical reasons,...

BACKGROUND AND PURPOSE Gamma knife radiosurgery has become an important treatment option for vestibular schwannoma. The effect of treatment can be assessed only by neuroimaging. We analyzed the evolution of follow-up MR imaging findings after gamma knife radiosurgery to provide information for the clinical management of these tumors. METHODS Changes in tumor volume and enhancement were assess...

Development of more sophisticated magnetic resonance imaging scans, the chances of finding asymptomatic patients with vestibular schwannomas as with other intracranial pathologies are increasing. Gamma Knife radiosurgery for vestibular schwannomas has been documented as an efficient and safe procedure based on the treatments in worldwide literature. Preservation of hearing, but not tinnitus, is...

OBJECTIVE To discuss the treatment effects and costs of surgery and Gamma Knife on hippocampal sclerosis (HS)-induced intractable epilepsy of children below age 10 years. METHODS The children below age 10 years who suffered from HS-induced intractable epilepsy from June 2010 to June 2012 were subjected to surgical and Gamma Knife treatments respectively according to their preference. RESULT...

We study the query complexity of cake cutting and give lower bounds for computing approximately envy-free, perfect, and equitable allocations with the minimum number of cuts. These lower bounds are tight for three players in the case of envy-free allocations and for two players in the case of perfect and equitable allocations. We also formalize moving knife procedures and show that a large subc...

Sixteen non-ampullary duodenal neoplasms in 16 patients were treated with endoscopic submucosal dissection (ESD) performed by an endoscopist and an instrument assistant between February 2011 and November 2014. En bloc resection was performed in 15 cases (94%); lateral and vertical margins were pathologically free in 13 cases. Perforation occurred during submucosal dissection using a flex knife,...

Radiosurgery is defined as the use of highly focused beams of radiation to ablate a pathologic target, thus achieving a surgical objective by noninvasive means. Recent advances have allowed a wide variety of intracranial lesions to be effectively treated with radiosurgery, and radiosurgical treatment has been accepted as a standard part of the neurosurgical armamentarium. The advent of frameles...