Implementation of a stereotactic microscope using an optically coupled tracking system.

abstract：:To elucidate the radiobiological effect of Gamma Knife radiosurgery on brain tumors, we performed a histological study on nine cases. In two, the material was obtained at autopsy and in seven following surgery. In the central region of the radiation field, destructive changes occurred both in tumor cells and in vessel...

journal_title：Stereotactic and functional neurosurgery

authors： Hirato M,Hirato J,Zama A,Inoue H,Ohye C,Shibazaki T,Andou Y

更新日期：1996-01-01 00:00:00

abstract：BACKGROUND/AIMS:Parkinson's disease (PD) is an idiopathic progressive neurological disorder. Improvement in motor function of PD patients has been established with subthalamic nucleus (STN) deep brain stimulation (DBS). While variations in DBS settings (i.e. amplitude, frequency and pulse width) on motor function have ...

journal_title：Stereotactic and functional neurosurgery

authors： Schoenberg MR,Mash KM,Bharucha KJ,Francel PC,Scott JG

更新日期：2008-01-01 00:00:00

abstract：BACKGROUND:To date, no consensus has been reached regarding validated and practical tools to quantify the severity of hemifacial spasm (HFS) before and after surgery. OBJECTIVE:The aim of this study has been to establish objective parameters for determining the preoperative severity of HFS and to assess the correlatio...

journal_title：Stereotactic and functional neurosurgery

authors： Lee JA,Jo KW,Kong DS,Park K

更新日期：2012-01-01 00:00:00

abstract：INTRODUCTION:Evidence has been provided that the subiculum may play an important role in the generation of seizures. Electrical stimulation at this target has been reported to have anticonvulsive effects in kindling and pilocarpine rat models, while in a clinical study of hippocampal deep brain stimulation (DBS), conta...

journal_title：Stereotactic and functional neurosurgery

authors： Vázquez-Barrón D,Cuéllar-Herrera M,Velasco F,Velasco AL

更新日期：2020-10-28 00:00:00

abstract：:The quantitative functional analysis of firing patterns has made it possible to classify human VL neurons into two basic types: (1), units with irregular unitary 3-to 20-imp/s activity (A type) and (2) units with short (10-30 ms) rhythmic (3-6 Hz) burst discharges (B type). These two basic types of VL neurons, determi...

journal_title：Stereotactic and functional neurosurgery

authors： Raeva SN

更新日期：1990-01-01 00:00:00

abstract：:Reinstallation of the Sheffield Gamma Knife Unit was completed in early November, 1991, following the replacement of the cobalt sources. Two methods were used to evaluate the isodose configuration within the replenished unit. The first method used a scanning microdensitometer to interrogate films exposed within a sphe...

journal_title：Stereotactic and functional neurosurgery

authors： Walton L,Griffiths LM,Hampshire A

更新日期：1993-01-01 00:00:00

abstract：:A Leksell Gamma Unit was commissioned and a Lars Leksell Center for Radiosurgery was established at the University of Virginia Health Sciences Center in March 1989. At that time a formal quality assurance program designed for the Leksell Gamma Unit was put into effect. This paper will review the components of suggeste...

journal_title：Stereotactic and functional neurosurgery

authors： Berk HW,Agarwal SK

更新日期：1991-01-01 00:00:00

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：BACKGROUND:Adjustment of the motor circuitry has been described in the treatment of Parkinson disease (PD). OBJECTIVES:To evaluate the modulation of the motor circuitry of PD patients by subthalamic deep brain stimulation (STN DBS) using 18F-fluorodeoxyglucose (FDG) and positron emission tomography (PET). METHODS:Res...

journal_title：Stereotactic and functional neurosurgery

authors： Cao C,Zhang H,Li D,Zhan S,Zhang J,Zhang X,Zuo C,Sun B

更新日期：2017-01-01 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：:The longevity of batteries in internal pulse generators (IPGs) used clinically for deep brain stimulation is not known. We conducted a study to assess the life span of these batteries. From 1993 to 2000, 163 single-channel batteries were surgically implanted in our institution. The electrical settings utilized in pati...

journal_title：Stereotactic and functional neurosurgery

authors： Bin-Mahfoodh M,Hamani C,Sime E,Lozano AM

更新日期：2003-01-01 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：BACKGROUND:Targeting for functional stereotactic procedures is traditionally carried out in a noninteractive fashion, without real-time positional feedback. In addition, stereotactic frames are uncomfortable for patients and may impede intraoperative neurological evaluation. As an initial step toward a fully frameless ...

journal_title：Stereotactic and functional neurosurgery

authors： Henderson JM

更新日期：2004-01-01 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：BACKGROUND/AIMS:Stereotactic postoperative imaging is essential for verification of the position of electrodes implanted for deep brain stimulation (DBS). MRI offers superior visualisation of the DBS targets relative to CT, but previous adverse incidents have heightened concerns about risks of postoperative MRI. Preope...

journal_title：Stereotactic and functional neurosurgery

authors： O'Gorman RL,Jarosz JM,Samuel M,Clough C,Selway RP,Ashkan K

更新日期：2009-01-01 00:00:00

abstract：BACKGROUND:Deep brain stimulation (DBS) is widely used to treat advanced Parkinson's disease, other movement and psychiatric disorders. DBS implantation requires application of a stereotactic frame throughout a lengthy procedure, making it uncomfortable and tiring. We designed a stereotactic cube to stage the operation...

journal_title：Stereotactic and functional neurosurgery

authors： Eljamel MS,Tulley M,Spillane K

更新日期：2007-01-01 00:00:00

abstract：PURPOSE:Abnormal neurogenesis in the hippocampus after status epilepticus (SE) has been suggested as a key pathogeny of temporal lobe epilepsy. This study aimed to investigate the effect of deep brain stimulation of the anterior thalamic nucleus (ANT-DBS) on hippocampal neurogenesis in LiCl-pilocarpine-induced epilepti...

journal_title：Stereotactic and functional neurosurgery

authors： Tang W,He X,Feng L,Liu D,Yang Z,Zhang J,Xiao B,Yang Z

更新日期：2020-12-10 00:00:00

abstract：BACKGROUND:Directional leads are increasingly used in deep brain stimulation. They allow shaping the electrical field in the axial plane. These new possibilities increase the complexity of programming. Thus, optimized programming approaches are needed to assist clinical testing and to obtain full clinical benefit. OBJ...

journal_title：Stereotactic and functional neurosurgery

authors： Kramme J,Dembek TA,Treuer H,Dafsari HS,Barbe MT,Wirths J,Visser-Vandewalle V

更新日期：2020-10-20 00:00:00

abstract：BACKGROUND:Several subcortical structures have been targeted for surgical treatment of dystonia, including motor thalamus, internal segment of globus pallidus (GPi), and more recently, the subthalamic nucleus (STN). Deep brain stimulation of GPi is currently the preferred surgical treatment, but it is unclear if target...

journal_title：Stereotactic and functional neurosurgery

authors： Novak KE,Nenonene EK,Bernstein LP,Vergenz S,Cozzens JW,Rezak M

更新日期：2008-01-01 00:00:00

abstract：:We identified 35 patients who had undergone stereotactic radiosurgery (SRS) for their biochemically proven Cushing's disease in order to assess the efficacy of SRS with regard to control of hypercortisolism, improvement of clinical features and prevention of tumor progression, and subsequent incidence of hypopituitari...

journal_title：Stereotactic and functional neurosurgery

authors： Devin JK,Allen GS,Cmelak AJ,Duggan DM,Blevins LS

更新日期：2004-01-01 00:00:00

abstract：:Stereotactic radiosurgery under local anesthesia with the Leksell Gamma Knife can effectively treat some patients with recurrent tic douloureux after unsuccessful medical/surgical procedures. Seven of 12 patients have shown complete relief or improvement of their trigeminal neuralgia. No complications have been observ...

journal_title：Stereotactic and functional neurosurgery

authors： Rand RW,Jacques DB,Melbye RW,Copcutt BG,Levenick MN,Fisher MR

更新日期：1993-01-01 00:00:00

abstract：BACKGROUND:The optimum target in surgery for Parkinson's disease (PD) is still controversial, especially in patients with tremor-dominant PD. We aim to compare results in tremor-dominant patients undergoing pallidotomy vs. those undergoing simultaneous posteroventral pallidotomy (PVP) and ventral intermediate nucleus (...

journal_title：Stereotactic and functional neurosurgery

authors： Fayed ZY,Radwan H,Aziz M,Eid M,Mansour AH,Nosseir M,Anwer H,Elserry T,Abdel Ghany WA

更新日期：2018-01-01 00:00:00

abstract：:We report a case of induced oscillopsia caused by deep brain stimulation (DBS) of the pedunculopontine nucleus (PPN). Recent reports have described involuntary oscillopsia during DBS of the PPN that patients have described as trembling vision. Here we substantiate this observation using infra-red eye tracking. It has ...

journal_title：Stereotactic and functional neurosurgery

authors： Jenkinson N,Brittain JS,Hicks SL,Kennard C,Aziz TZ

更新日期：2012-01-01 00:00:00

abstract：:Postoperative magnetic resonance imaging (MRI) of basal ganglia functional lesions illustrates the accuracy of preoperative target localization. The technique of perioperative MRI and CT localization for pallidotomy will be discussed and correlated with the center of the lesion on postoperative standard MRI as well as...

journal_title：Stereotactic and functional neurosurgery

authors： Lehman RM,Mezrich R,Sage J,Goldbe L

更新日期：1994-01-01 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：BACKGROUND AND OBJECTIVE:Neuronavigation devices have progressed over the past 2 decades, but logistical limitations remain for many stereotactic procedures. We describe our technique and accuracy for a novel miniature optical tracking system which overcomes these limitations. METHOD:The minioptical tracking system us...

journal_title：Stereotactic and functional neurosurgery

authors： von Jako CR,Perlaki G,Orsi G,Schwarcz A,Dóczi T

更新日期：2014-01-01 00:00:00

abstract：:The true accuracy of MRI scanners utilized for target acquisition in functional stereotaxis remains undefined. We have performed pallidotomies at the Loma Linda University Medical Center using both MRI and MRI concomitant with positive contrast ventriculography. A retrospective study of 33 cases revealed significant d...

journal_title：Stereotactic and functional neurosurgery

authors： Mandybur G,Morenski J,Kuniyoshi S,Iacono RP

更新日期：1995-01-01 00:00:00

abstract：BACKGROUND:Few multiple case studies of the effects of deep brain stimulation for camptocormia associated with Parkinson's disease have been reported. Although deep brain stimulation was in some cases not effective against camptocormia, it is unclear in which types of patients it was effective in treating camptocormia....

journal_title：Stereotactic and functional neurosurgery

authors： Asahi T,Taguchi Y,Hayashi N,Hamada H,Dougu N,Takashima S,Tanaka K,Endo S

更新日期：2011-01-01 00:00:00

abstract：:Dystonia secondary to cerebral infarcts presents months to years after the initial insult, is usually unilateral and causes significant morbidity. Deep brain stimulation (DBS) of the globus pallidus internus (GPi) is established as the most frequent target in the management of the dystonic symptoms. We report our expe...

journal_title：Stereotactic and functional neurosurgery

authors： Tambirajoo K,Furlanetti L,Samuel M,Ashkan K

更新日期：2020-01-01 00:00:00

abstract：:Clinical experience with the use of pergolide is presented in 55 patients with Parkinson's disease. Fifty to 900 micrograms/day (mean 242.73, SD 217.51) of pergolide and 0.64-17.05 micrograms/kg/day (mean 4.58, SD 4.25) pergolide was given together with L-carbidopa to 29 males and 26 females for a period of up to 2 ye...

journal_title：Stereotactic and functional neurosurgery

authors： Amano K,Takakura K

更新日期：1997-01-01 00:00:00