Hypothalamic hamartomas: neuropathological features with and without prior gamma knife radiosurgery.

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：:The Gamma Knife is currently the only radiosurgical device which has been used in functional neurosurgery. This mode of utilization is possible because the instrument can make lesions in normal brains with a volume as small as 50 mm3. The experience of functional radiosurgery accumulated at the Karolinska Institute ov...

journal_title：Stereotactic and functional neurosurgery

authors： Lindquist C,Kihlström L,Hellstrand E

更新日期：1991-01-01 00:00:00

abstract：OBJECTIVE:To perform a preliminary study on the effects and safety of bilateral cingulotomy and anterior capsulotomy in patients with aggressive behavior. PATIENTS AND METHODS:Twenty-three psychiatric patients showing aggressive behavior refractory to conventional treatment were initially evaluated. The subjects were ...

journal_title：Stereotactic and functional neurosurgery

authors： Jiménez F,Soto JE,Velasco F,Andrade P,Bustamante JJ,Gómez P,Ramírez Y,Carrillo-Ruiz JD

更新日期：2012-01-01 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：BACKGROUND:To maintain the efficacy of deep brain stimulation (DBS) on dystonic symptoms, slight incremental increase in voltage may be necessary over years after a steady state has been reached following the initial programming of optimal settings. So far however, no data are available regarding the adjustment of volt...

journal_title：Stereotactic and functional neurosurgery

authors： Blahak C,Capelle HH,Bäzner H,Kinfe T,Hennerici MG,Krauss JK

更新日期：2010-01-01 00:00:00

abstract：BACKGROUND/AIMS:Technological advancements had a serious impact on the evolution of robotic systems in stereotactic neurosurgery over the last three decades and may turn robot-assisted stereotactic neurosurgery into a sophisticated alternative to purely mechanical guiding devices. OBJECTIVES:To compare robot-assisted ...

journal_title：Stereotactic and functional neurosurgery

authors： Neudorfer C,Hunsche S,Hellmich M,El Majdoub F,Maarouf M

更新日期：2018-01-01 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：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：:Image-directed neurosurgical systems allow the correlation of a point in the operative field to a corresponding point on the patient's CT/MR scans. We have modified a surgical microscope by mounting three light-emitting diodes (LEDs) on a small frame attached to the microscope. The operative field was registered to th...

journal_title：Stereotactic and functional neurosurgery

authors： Hirschberg H

更新日期：1996-01-01 00:00:00

abstract：:Ki67 (also known as MIB) is a monoclonal antibody staining agent, which is routinely used as a marker of cellular proliferation. It is used to evaluate the proliferative potential of malignant tumors, since it is thought to stain only those cells undergoing active division. The paradoxical elevation of the Ki67 labeli...

journal_title：Stereotactic and functional neurosurgery

authors： Jennelle R,Gladson C,Palmer C,Guthrie B,Markert J

更新日期：1999-01-01 00:00:00

abstract：:A simple technique has been designed which identifies the gantry isocenter and aligns the laser beams to the isocenter of the gantry within 3-5 min with an error of less than 0.75 mm, depending upon the accuracy of gantry rotation. ...

journal_title：Stereotactic and functional neurosurgery

authors： Heifetz MD,Rosemark PJ,Wexler MC,Greenberg SH,Thompson RW

更新日期：1989-01-01 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：: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:Rasmussen encephalitis (RE) is a rare progressive encephalitis that results in intractable seizures, cognitive decline and hemiparesis. Surgery seems to be the only effective way to control seizures in RE patients. OBJECTIVE:To describe the clinical, electrophysiological, neuroradiological and histological ...

journal_title：Stereotactic and functional neurosurgery

authors： Guan Y,Zhou J,Luan G,Liu X

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：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：:In many cases, the treatment of neuropathic pain by intrathecal opioids fails to meet expectations. In a trial involving 10 patients, the intrathecal administration of clonidine combined with opioids in the treatment of chronic pain was introduced in our department for the first time. Eight patients with neuropathic p...

journal_title：Stereotactic and functional neurosurgery

authors： Uhle EI,Becker R,Gatscher S,Bertalanffy H

更新日期：2000-01-01 00:00:00

abstract：BACKGROUND:Balloon compression of the gasserian ganglion has been a well-established percutaneous treatment of trigeminal neuralgia since the 1980s. However, puncture of the foramen ovale by conventional single-plane fluoroscopy can be difficult in cases of local anatomic abnormalities. CASE PRESENTATION:We present th...

journal_title：Stereotactic and functional neurosurgery

authors： Mendes PD,Martins da Cunha PH,Monteiro KKO,Quites LV,Fonseca Filho GA

更新日期：2020-09-16 00:00:00

abstract：:Spinal cord stimulation (SCS) has been reported to be effective treatment for the failed back surgery syndrome in a number of retrospective case series. Its retrospectively reported results compare favorably with those of neurosurgical treatment alternatives, such as reoperation and ablative procedures. There has been...

journal_title：Stereotactic and functional neurosurgery

authors： North RB,Kidd DH,Lee MS,Piantodosi S

更新日期：1994-01-01 00:00:00

abstract：:In this study, we investigated the efficacy of brachytherapy in the treatment of 138 patients with intracranial neoplasms of the CNS. Of the total number of patients, 50 presented with glioblastoma multiforme, 45 presented with low-grade glioma, 19 presented with anaplastic astrocytoma, 23 presented with metastases an...

journal_title：Stereotactic and functional neurosurgery

authors： Teixeira MJ,Lepski G,Correia C,Aguiar PH

更新日期：2003-01-01 00:00:00

abstract：:Stereotactic techniques were used to transplant adrenal medullary tissue to the head of the right caudate nucleus in 12 patients with Parkinson's disease. No significant lasting complications were seen. All patients had an initial improvement. 11 of the 12 patients remain improved over their preoperative condition aft...

journal_title：Stereotactic and functional neurosurgery

authors： Gildenberg PL,Pettigrew LC,Merrell R,Butler I,Conklin R,Katz J,DeFrance J

更新日期：1990-01-01 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:Percutaneous trigeminal rhizotomy or balloon compression for trigeminal neuralgia carries a potential risk for the brainstem, the carotid artery, and the basilar artery. OBJECTIVE:To detail the relation of critical neural and vascular structures to expanded balloons used for percutaneous compression of the ...

journal_title：Stereotactic and functional neurosurgery

authors： Sandwell S,Montoya S,Towner JE,Markman JD,Schell MC,Bhalla T

更新日期：2018-01-01 00:00:00

abstract：BACKGROUND:Gamma knife surgery (GKS) is used at subnecrotic doses for temporal lobe epilepsy (TLE) treatment. Rat models of TLE have been used to probe the mechanisms underlying GKS. Previous GKS studies on rats have used the Leksell GammaPlan (LGP) treatment planning system to determine the irradiation time to achieve...

journal_title：Stereotactic and functional neurosurgery

authors： Marcelin B,Kjäll P,Johansson J,Lundin A,Nordström H,Eriksson M,Bernard C,Régis J

更新日期：2010-01-01 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：:A simple device is described to perform lateral orthogonal approaches using the Leksell stereotactic frame. This device is especially useful for simultaneous bilateral insertion of intracerebral electrodes without the need for attaching the stereotactic arc. It also allows for targeting of far lateral lesions that lie...

journal_title：Stereotactic and functional neurosurgery

authors： Rees Cosgrove G

更新日期：1993-01-01 00:00:00

abstract：:The rostral areas of the brainstem have been extensively studied in higher mammals and to a lesser extent in humans in the last two decades, looking for anatomical, electrophysiological and neurochemical evidence of involvement in the initiation and control of voluntary movement. This has come with the realisation tha...

journal_title：Stereotactic and functional neurosurgery

authors： Nandi D,Stein JF,Aziz TZ

更新日期：2002-01-01 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: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：:Stereotactic interventions at thalamic/subthalamic levels for parkinsonian tremor give the chance to investigate the influence of the supraspinal proprioceptive loops on the tonic component of motor tasks. Studies demonstrate not only a normalization of the late stretch reflex component and a decrease of the pre-refle...

journal_title：Stereotactic and functional neurosurgery

authors： Struppler A

更新日期：1993-01-01 00:00:00