Microelectrode findings in the thalamus in chronic pain and other conditions.

abstract：:Background: Stimulation parameters are crucial for the efficacy and safety of motor cortex stimulation (MCS). Motor threshold (MT) can be defined as the lowest voltage that produces motor contraction. The final stimulation parameters are always a smaller percentage of MT in order to avoid seizures. We determined how p...

journal_title：Stereotactic and functional neurosurgery

authors： Chang S,Ranjan M,Slotty PJ,Honey CR

更新日期：2015-01-01 00:00:00

abstract：:There is no clear consensus regarding the optimal location for placing deep brain stimulation (DBS) electrodes within the subthalamic nucleus (STN) target region in Parkinson's disease. In cases of poor symptom control or adverse effects following lead placement, leads presumed to be inadequately positioned may be cor...

journal_title：Stereotactic and functional neurosurgery

authors： Richardson RM,Ostrem JL,Starr PA

更新日期：2009-01-01 00:00:00

abstract：:Following 4 years of experience using a microcomputer-based system for the planning of stereotactic neurosurgery, we have now developed a workstation with the capability of displaying and analyzing three-dimensional images for this purpose. In addition to viewing volumetrically rendered three-dimensional computer tomo...

journal_title：Stereotactic and functional neurosurgery

authors： Peters TM,Henri C,Pike GB,Clark JA,Collins L,Olivier A

更新日期：1990-01-01 00:00:00

abstract：BACKGROUND:In nonresectable glioblastoma (GBM), stereotactic biopsies are performed to retrieve tissue for diagnostic purposes. The analysis of O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation adds prognostic and predictive information. OBJECTIVES:The aim of the study was to detect confounding factor...

journal_title：Stereotactic and functional neurosurgery

authors： Weise LM,Harter PN,Eibach S,Braczynski AK,Dunst M,Rieger J,Bähr O,Hattingen E,Steinbach JP,Plate KH,Seifert V,Mittelbronn M

更新日期：2014-01-01 00:00:00

abstract：PURPOSE:To evaluate dose conformity and mean target dose in light of previous comparative studies and state-of-the-art radiosurgery delivery modalities. MATERIALS AND METHODS:Seven patients with acoustic neuromas deemed clinically suitable for linear accelerator or Gamma Knife radiosurgery were planned such that the m...

journal_title：Stereotactic and functional neurosurgery

authors： Perks JR,El-Hamri K,Blackburn TP,Plowman PN

更新日期：2005-01-01 00:00:00

abstract：:A computerized method of determining the focal point of electrical activity in the pallidum of parkinsonian patients was developed using on-line quantitative physiological data analysis. Thirty patients in a series of 70 were studied in depth. Neuronal activity was recorded from the pallidum using a semi-microelectrod...

journal_title：Stereotactic and functional neurosurgery

authors： Lehman RM,Micheli-Tzanakou E,Medl A,Hamilton JL

更新日期：2000-01-01 00:00:00

abstract：:In his keynote address, the author reviews early work in the surgical management of the epilepsies and presents a state-of-the-art review of current basic science and clinical indications for and results from corpus callosotomy for the treatment of seizure disorders. ...

journal_title：Stereotactic and functional neurosurgery

authors： Marino R

更新日期：1994-01-01 00:00:00

abstract：:The diagnostic yield of stereotactic biopsies depends upon safely sampling the most representative regions of masses. Potentially, localization information presently available from CT and MR scans might be improved by considering regional levels of cerebral metabolism by PET. In 10 selected stereotactic biopsies of in...

journal_title：Stereotactic and functional neurosurgery

authors： Maciunas RJ,Kessler RM,Maurer C,Mandava V,Watt G,Smith G

更新日期：1992-01-01 00:00:00

abstract：BACKGROUND:The neuropathological consequences of Gamma Knife radiosurgery (GK) on hypothalamic hamartoma (HH) are unknown. OBJECTIVE:In a cohort of patients undergoing surgery for treatment-resistant epilepsy, we compared surgically resected HH tissue from patients without (group I; n = 19) and with (group II; n = 10)...

journal_title：Stereotactic and functional neurosurgery

authors： Kerrigan JF,Parsons A,Rice SG,Simeone K,Shetter AG,Abla AA,Prenger E,Coons SW

更新日期：2013-01-01 00:00:00

abstract：BACKGROUND:Up to 60% of Parkinson's disease (PD) patients suffer from low back pain (LBP) during the course of their disease. How LBP affects daily functional status and how to manage this aspect of PD has not been adequately explored. METHODS:We examined 16 patients undergoing bilateral subthalamic nucleus deep brain...

journal_title：Stereotactic and functional neurosurgery

authors： Smith H,Gee L,Kumar V,Ramirez-Zamora A,Durphy J,Hanspal E,Barba A,Molho E,Shin D,Pilitsis JG

更新日期：2015-01-01 00:00:00

abstract：:A prospective study on the effects of bilateral anterior capsulotomy in patients with refractory obsessive-compulsive disorder (OCD) is presented. A total of 18 procedures were performed in 15 patients. The mean duration of the OCDs was 18.1 +/- 5.6 years (range 11-26 years). The mean total Yale-Brown Scale (Y-BOCS) s...

journal_title：Stereotactic and functional neurosurgery

authors： Oliver B,Gascón J,Aparicio A,Ayats E,Rodriguez R,Maestro De León JL,García-Bach M,Soler PA

更新日期：2003-01-01 00:00:00

abstract：BACKGROUND:Hypothalamic hamartomas are associated with precocious puberty and chronic epilepsy characterized by gelastic seizures. The seizure disorder is usually refractory to most antiepileptic drugs. Gamma knife surgery has emerged as an alternative to microsurgical removal or radiofrequency ablation to improve seiz...

journal_title：Stereotactic and functional neurosurgery

authors： Mathieu D,Kondziolka D,Niranjan A,Flickinger J,Lunsford LD

更新日期：2006-01-01 00:00:00

abstract：:Fifty-eight patients, 36 with essential tremor (ET) and 22 with Parkinson's disease (PD), received deep brain stimulation (DBS) in the thalamic ventral intermediate (Vim) nucleus. The mean follow-up was 17 months for ET and 21 months for PD patients. Stimulation parameters were adjusted as needed, at various intervals...

journal_title：Stereotactic and functional neurosurgery

authors： Hariz MI,Shamsgovara P,Johansson F,Hariz G,Fodstad H

更新日期：1999-01-01 00:00:00

abstract：:Out of 57 patients operated for intractable epilepsy of the central region, 8 harbored an indolent glioma (7 dysembryoplastic neuroepithelial tumors, 1 ganglioglioma). Mapping of the sensorimotor area with depth electrodes implanted for stereoelectroencephalographic exploration demonstrated no or abnormal motor respon...

journal_title：Stereotactic and functional neurosurgery

authors： Devaux B,Chassoux F,Landré E,Turak B,Daumas-Duport C,Chagot D,Gagnepain JP,Chodkiewicz JP

更新日期：1997-01-01 00:00:00

abstract：:We reviewed the initial experience with 331 consecutive patients treated during the first 2 years of operation of the University of Pittsburgh Gamma Unit. Among 178 patients with vascular malformations, 161 had angiographically demonstrable arteriovenous malformations, and 17 had angiographically occult malformations....

journal_title：Stereotactic and functional neurosurgery

authors： Coffey RJ,Lunsford LD,Bissonette D,Flickinger JC

更新日期：1990-01-01 00:00:00

abstract：:Interstitial hyperthermia of malignant brain tumors has been produced by a heated ferromagnetic implant with a low Curie point. Induction heating of the implant, which is stereotactically implanted in a tumor, is obtained by eddy currents in a high-frequency magnetic field. Safe, repeated and long-term treatment of 35...

journal_title：Stereotactic and functional neurosurgery

authors： Kobayashi T,Kida Y

更新日期：1992-01-01 00:00:00

abstract：:We have analyzed a series of 225 patients with intracranial metastases (343 lesions), treated in our department by Gamma Knife radiosurgery over a 30-month period. We have used a modified Pittsburgh protocol and performed 242 procedures on 164 single/78 multiple lesions. Primary tumors were mostly carcinomas of the lu...

journal_title：Stereotactic and functional neurosurgery

authors： Gerosa M,Nicolato A,Severi F,Ferraresi P,Masotto B,Barone G,Foroni R,Piovan E,Pasoli A,Bricolo A

更新日期：1996-01-01 00:00:00

abstract：OBJECTIVE:We compared bilateral globus pallidus internus (GPi) deep brain stimulation (DBS) with bilateral GPi DBS plus ventralis oralis (Vo) thalamotomy to analyze the effect of the combined Vo thalamotomy. METHODS:Between March 2003 and December 2008, 10 patients underwent DBS and/or Vo thalamotomy for treatment of ...

journal_title：Stereotactic and functional neurosurgery

authors： Kim JP,Chang WS,Cho SR,Chang JW

更新日期：2012-01-01 00:00:00

abstract：INTRODUCTION:The primary goal of stereotactic systems in deep brain stimulation (DBS) surgery is accurate delivery of a DBS lead to a target identified on imaging. Thus, it is critical to understand the accuracy of the stereotactic systems and the factors which may be associated with a decrease in accuracy. METHODS:Ni...

journal_title：Stereotactic and functional neurosurgery

authors： Kelman C,Ramakrishnan V,Davies A,Holloway K

更新日期：2010-01-01 00:00:00

abstract：:Experimental studies indicate that deafferentation results in reorganization of the somatosensory map at various levels of the CNS, such that the representation of a body part adjacent to a region that is denervated expands into the deafferented area. Recent data suggest that in the human this occurs at the cortical l...

journal_title：Stereotactic and functional neurosurgery

authors： Kiss ZH,Dostrovsky JO,Tasker RR

更新日期：1994-01-01 00:00:00

abstract：OBJECTIVE:Since a simple, rapid and accurate stereotactic system allowing CT monitoring would offer the neurosurgeon several advantages, the feasibility and application accuracy of frameless laser-guided freehand point stereotaxis for neurosurgical interventions was studied. METHODS:A Cartesian coordinate grid mounted...

journal_title：Stereotactic and functional neurosurgery

authors： Hussman KL,Chaloupka JC,Berger SB,Chon KS,Broderick M

更新日期：1998-01-01 00:00:00

abstract：BACKGROUND:Writer's cramp is a specific movement disorder with hand muscle cramps in writing, being classified into focal and action-specific dystonia. Stereotactic surgery, such as thalamotomy and deep brain stimulation (DBS), has been reported for writer's cramp; however, the number of reported cases is still scarce ...

journal_title：Stereotactic and functional neurosurgery

authors： Asahi T,Koh M,Kashiwazaki D,Kuroda S

更新日期：2014-01-01 00:00:00

abstract：:We present a system for surgical navigation using stereo overlays in the operating microscope aligned to the operative scene. This augmented reality system provides 3D information about nearby structures and offers a significant advancement over pointer-based guidance, which provides only the location of one point and...

journal_title：Stereotactic and functional neurosurgery

authors： King AP,Edwards PJ,Maurer CR Jr,de Cunha DA,Hawkes DJ,Hill DL,Gaston RP,Fenlon MR,Strong AJ,Chandler CL,Richards A,Gleeson MJ

更新日期：1999-01-01 00:00:00

abstract：:Endoscopic pituitary surgery is a minimally invasive method which allows simple transnasal transphenoidal surgical access without retractors, and has been used by our team in 536 patients from 1993 to 1999. In 326 of these patients, computer-aided image-guided techniques (CAN) were used in conjunction with endoscopy. ...

journal_title：Stereotactic and functional neurosurgery

authors： Pillay PK,Leo CW,Sethi DS

更新日期：2000-01-01 00:00:00

abstract：OBJECT:To determine the feasibility of utilizing a Gamma Knife stereotactic boost for patients at high risk of local recurrence from minor salivary gland tumors invading the base of skull. METHODS:Eight patients with minor salivary gland tumors invading the base of skull were treated with primary neutron radiotherapy ...

journal_title：Stereotactic and functional neurosurgery

authors： Douglas JG,Silbergeld DL,Laramore GE

更新日期：2004-01-01 00:00:00

abstract：:Great advances in imaging technology allows the surgeon to visualize the entire brain surface during surgery. However, the cerebral convolutions are extremely complex, so that it is often difficult to define the central area precisely. Using the curvilinear reconstruction technique (Gyroview) and MRI, we have analyzed...

journal_title：Stereotactic and functional neurosurgery

authors： Lee U,Bastos AC,Alonso-Vanegas MA,Morris R,Olivier A

更新日期：1998-01-01 00:00:00

abstract：BACKGROUND:A patient controller (PC) is an optional device for patients with deep brain stimulation (DBS) to have limited control of their stimulator system. OBJECTIVES:We investigated the impact of a PC on DBS safety, most notably the handling/prevention of unexpected DBS failure in patients with Parkinson's disease ...

journal_title：Stereotactic and functional neurosurgery

authors： Allert N,Mehnert C,Lehrke R,Maarouf M,Sturm V

更新日期：2011-01-01 00:00:00

abstract：BACKGROUND:Among the neuropsychiatric symptoms in Parkinson's disease (PD) patients, hallucination can result from the disease itself or medical treatment. Hallucination associated with subthalamic nucleus stimulation (STN-DBS) has been reported; however, it is still unclear whether PD patients with a history of halluc...

journal_title：Stereotactic and functional neurosurgery

authors： Yoshida F,Miyagi Y,Kishimoto J,Morioka T,Murakami N,Hashiguchi K,Samura K,Sakae N,Yamasaki R,Kawaguchi M,Sasaki T

更新日期：2009-01-01 00:00:00

abstract：:Stiff limb syndrome (SLS) is a rare chronic condition which can result in significant debility. We report the case of a 44-year-old man suffering from severe painful spasms in his right leg with a diagnosis of SLS. He had been initially treated for his pain with a spinal cord stimulator but presented with exacerbation...

journal_title：Stereotactic and functional neurosurgery

authors： Ughratdar I,Sivakumar G,Basu S

更新日期：2010-01-01 00:00:00

abstract：:Dorsal root entry zone (DREZ) lesions are effective in treating specific pain syndromes, most notably post-brachial plexus avulsion. There is limited experience, however, with lesions in the conus medullaris. We review the case of a patient having pelvic pain and urinary retention who failed to improve despite multipl...

journal_title：Stereotactic and functional neurosurgery

authors： Gorecki JP,Burt T,Wee A

更新日期：1992-01-01 00:00:00