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Stereotactic and Functional Neurosurgery

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https://www.readbyqxmd.com/read/27846633/variations-in-thalamic-anatomy-affect-targeting-in-deep-brain-stimulation-for-epilepsy
#1
Chengyuan Wu, Pierre-François D'Haese, Srivatsan Pallavaram, Benoit M Dawant, Peter Konrad, Ashwini D Sharan
BACKGROUND: Thalamic size and shape vary significantly across patients - with changes specific to the anterior thalamus occurring with age and in the setting of chronic epilepsy. Such ambiguity raises concerns regarding electrode position and potential implications for seizure outcomes. METHODS: MRIs from 6 patients from a single center underwent quantitative analysis. In addition to direct measurements from postimplantation MRIs, the CRAnialVault Explorer suite was used to normalize electrode position to a common reference system...
November 16, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27846626/deep-brain-stimulation-in-posttraumatic-tremor-a-series-of-cases-and-literature-review
#2
Luis Mariano Rojas-Medina, Lucia Esteban-Fernández, Victor Rodríguez-Berrocal, Marta Del Álamo de Pedro, Luis Ley Urzaiz, Ignacio Regidor Bailly-Baillere
BACKGROUND: Posttraumatic tremor (PTT) is the most frequent movement disorder secondary to cranioencephalic trauma and can be persistent and disabling. OBJECTIVES: We review and assess the efficacy of deep brain stimulation (DBS) at the VIM/VOP/ZI (ventralis intermedius/ventrooralis posterior/zona incerta) complex level for the treatment of PTT. METHODS: During the period from 1999 to 2014, 5 patients diagnosed with PTT were selected who had experienced a major deterioration in their quality of life without improvement during medical treatment for more than 1 year...
November 16, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27798944/deep-brain-stimulation-of-the-anterior-limb-of-the-internal-capsule-may-be-efficacious-for-explosive-aggressive-behaviour
#3
Flavio Giordano, Michele Cavallo, Barbara Spacca, Stefano Pallanti, Francesco Tomaiuolo, Fulvio Pieraccini, Andrea Fagiolini, Manuela Grandoni, Federico Melani, Anna Zicca, Stelvio Sestini, Lorenzo Genitori
BACKGROUND: Intermittent explosive disease (IED) is a psychiatric disorder characterized by intermittent attacks of rage and violence frequently resistant to pharmacological therapy. Deep brain stimulation (DBS) of the posteromedial hypothalamus has been applied with fair results and clinical improvement with some surgical morbidity due to neurovegetative side effects. The anterior limb of the internal capsule/ventral capsule/ventral striatum (VC/VS) has never been used alone as a target for this disease...
November 1, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27784023/deep-brain-stimulation-of-the-caudal-zona-incerta-tremor-control-in-relation-to-the-location-of-stimulation-fields
#4
Anders Fytagoridis, Mattias Åström, Jennifer Samuelsson, Patric Blomstedt
BACKGROUND: The caudal zona incerta (cZi) and posterior subthalamic area (PSA) are an emerging deep brain stimulation (DBS) target for essential tremor (ET). OBJECTIVES: To evaluate the efficacy of tremor control in relation to the anatomical locations of stimulation fields in 50 patients with ET and DBS of the cZi. METHODS: A total of 240 contacts were evaluated separately with monopolar stimulation, and amplitudes were optimized for improvement of tremor and hand function...
October 27, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27784015/review-on-factors-affecting-targeting-accuracy-of-deep-brain-stimulation-electrode-implantation-between-2001-and-2015
#5
Zhe Li, Jian-Guo Zhang, Yan Ye, Xiaoping Li
BACKGROUND: Accurate implantation of a depth electrode into the brain is of the greatest importance in deep brain stimulation (DBS), and various stereotactic systems have been developed for electrode implantation. However, an updated analysis of depth electrode implantation in the modern era of DBS is lacking. OBJECTIVE: This study aims at providing an updated review on targeting accuracy of DBS electrode implantation by analyzing contemporary DBS electrode implantation operations from the perspective of precision engineering...
October 27, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723661/mania-induced-by-stimulation-following-dbs-of-the-bed-nucleus-of-stria-terminalis-for-obsessive-compulsive-disorder
#6
Paresh K Doshi
No abstract text is available yet for this article.
October 11, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27721311/gamma-knife-radiosurgery-in-recurrent-glioblastoma
#7
Josa M Frischer, Christine Marosi, Adelheid Woehrer, Johannes A Hainfellner, Karin Ute Dieckmann, Helmut Eiter, Wei-Te Wang, Ammar Mallouhi, Adolf Ertl, Engelbert Knosp, Martin Filipits, Klaus Kitz, Brigitte Gatterbauer
BACKGROUND: We evaluated Gamma Knife radiosurgery (GKRS) as a treatment option for patients with recurrent glioblastoma. PATIENTS AND METHODS: 42 patients with histopathologically diagnosed recurrent grade IV tumor were treated with GKRS. All patients had undergone standard multimodal first-line treatment. The average time from diagnosis to GKRS was 17.0 months. The median target volume was 5.1 cm3. The median margin dose was 10 Gy and the median central dose 20 Gy...
October 8, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27665091/a-randomized-trial-on-the-efficacy-of-topical-anesthesia-for-pain-reduction-during-frame-placement-for-gamma-knife-radiosurgery
#8
Sean Michael Duenas, Jonathan Pun, Hesham A Radwan, Meredith Akerman, Michael Schulder
BACKGROUND/AIMS: Frame application for gamma knife radiosurgery (GKR) may be perceived as painful by patients. This study was designed to assess the efficacy of EMLA (2.5% lidocaine/2.5% prilocaine) in pain reduction. METHODS: This was a prospective, randomized, and controlled trial approved by our institutional review board. Fifty-four patients undergoing outpatient GKR were divided into EMLA and placebo groups. Prior to frame placement, EMLA/placebo was applied to the patient's forehead...
September 24, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27632184/mri-conditionality-in-patients-with-spinal-cord-stimulation-devices
#9
Sebastian Rubino, Adedamola Adepoju, Vignessh Kumar, Julia Prusik, Nathaniel Murphy, Stephane Owusu-Sarpong, Julie G Pilitsis
BACKGROUND: Because of the commonality of diagnostic magnetic resonance imaging (MRI), MRI conditional technology has increased throughout the device industry. It is often difficult to be aware of MRI specifications for each device. OBJECTIVES: We provide a review of the clinical experience with MRI and spinal cord stimulation (SCS) devices and develop a general reference of current device/MRI specifications. METHODS: We reviewed the available literature on the clinical experience with SCS devices and examined its specifications...
September 16, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27434121/stereotactic-thalamotomy-for-hairdresser-s-dystonia-a-case-series
#10
Shiro Horisawa, Shinichi Goto, Takeshi Nakajima, Taku Ochiai, Takakazu Kawamata, Takaomi Taira
BACKGROUND: Hairdresser's dystonia is a rarely reported form of focal hand dystonia, and the clinical course and treatment remains poorly understood. OBJECTIVES: The aim of this report was to clarify the impact of thalamotomy on hairdresser's dystonia. METHODS: Four consecutive patients with hairdresser's task-specific dystonia evaluated at Tokyo Women's Medical University Hospital between 2008 and 2013 were treated with stereotactic thalamotomy, and were recruited for this case series...
July 20, 2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27784019/erratum
#11
(no author information available yet)
No abstract text is available yet for this article.
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27728909/pedunculopontine-nucleus-region-deep-brain-stimulation-in-parkinson-disease-surgical-techniques-side-effects-and-postoperative-imaging
#12
Clement Hamani, Andres M Lozano, Paolo A M Mazzone, Elena Moro, William Hutchison, Peter A Silburn, Ludvic Zrinzo, Mesbah Alam, Laurent Goetz, Erlick Pereira, Anand Rughani, Wesley Thevathasan, Tipu Aziz, Bastiaan R Bloem, Peter Brown, Stephan Chabardes, Terry Coyne, Kelly Foote, Edgar Garcia-Rill, Etienne C Hirsch, Michael S Okun, Joachim K Krauss
The pedunculopontine nucleus (PPN) region has received considerable attention in clinical studies as a target for deep brain stimulation (DBS) in Parkinson disease. These studies have yielded variable results with an overall impression of improvement in falls and freezing in many but not all patients treated. We evaluated the available data on the surgical anatomy and terminology of the PPN region in a companion paper. Here we focus on issues concerning surgical technique, imaging, and early side effects of surgery...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27728907/evolving-concepts-in-posterior-subthalamic-area-deep-brain-stimulation-for-treatment-of-tremor-surgical-neuroanatomy-and-practical-considerations
#13
Adolfo Ramirez-Zamora, Heather Smith, Vignessh Kumar, Julia Prusik, Sujoy Phookan, Julie G Pilitsis
BACKGROUND: Although thalamic deep brain stimulation (DBS) has been established as an effective therapy for refractory tremor in Parkinson's disease and essential tremor, reports investigating the efficacy of posterior subthalamic area (PSA) DBS for severe, debilitating tremors continue to emerge. However, questions regarding the optimal anatomical target, surgical approach, programming paradigms and effectiveness compared to other targets remain. OBJECTIVES: In this report, we aimed to review the current literature to assess different stereotactic techniques, anatomical considerations, adverse effects and stimulation settings in PSA DBS...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723662/pedunculopontine-nucleus-region-deep-brain-stimulation-in-parkinson-disease-surgical-anatomy-and-terminology
#14
Clement Hamani, Tipu Aziz, Bastiaan R Bloem, Peter Brown, Stephan Chabardes, Terry Coyne, Kelly Foote, Edgar Garcia-Rill, Etienne C Hirsch, Andres M Lozano, Paolo A M Mazzone, Michael S Okun, William Hutchison, Peter Silburn, Ludvic Zrinzo, Mesbah Alam, Laurent Goetz, Erlick Pereira, Anand Rughani, Wesley Thevathasan, Elena Moro, Joachim K Krauss
Several lines of evidence over the last few years have been important in ascertaining that the pedunculopontine nucleus (PPN) region could be considered as a potential target for deep brain stimulation (DBS) to treat freezing and other problems as part of a spectrum of gait disorders in Parkinson disease and other akinetic movement disorders. Since the introduction of PPN DBS, a variety of clinical studies have been published. Most indicate improvements in freezing and falls in patients who are severely affected by these problems...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723660/relationship-between-postoperative-eeg-driving-response-and-lead-location-in-deep-brain-stimulation-of-the-anterior-nucleus-of-the-thalamus-for-refractory-epilepsy
#15
Byung-Chul Son, Young Min Shon, Seong-Hoon Kim, Jin-Gyu Choi, Jiyeon Kim
OBJECTIVES: Interpreting the postoperative electroencephalographic (EEG) driving response (DR) as an indicator of electrode placement within the thalamic nucleus in deep brain stimulation (DBS) of the anterior nucleus of the thalamus (ANT) for refractory epilepsy is controversial. MATERIALS AND METHODS: We retrospectively investigated the relationship between postoperative EEG DR and the location of 11 electrodes in 6 patients who underwent ANT DBS for refractory epilepsy...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723659/contralateral-hippocampal-stimulation-for-failed-unilateral-anterior-temporal-lobectomy-in-patients-with-bilateral-temporal-lobe-epilepsy
#16
Ping Ding, Shaohui Zhang, Junchen Zhang, Xiaohong Hu, Xiaoman Yu, Shuangshuang Liang, Chao Gao, Shuli Liang
AIMS: To prospectively study the surgical outcomes of unilateral anterior temporal lobectomy (ATL) in patients with intractable bilateral temporal lobe epilepsy (TLE) as well as two-staged contralateral hippocampal stimulation in patients after failed unilateral ATL. METHODS: Eighteen carefully selected patients with bilateral TLE underwent unilateral ATL. Five cases with failed ATL underwent two-staged contralateral hippocampal stimulation. Seizure control and changes in intelligence quotient (IQ), memory quotient, and quality of life (QOL) were analyzed 2-5 years after treatment...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723656/jaw-immobilization-for-gamma-knife-surgery-in-patients-with-mandibular-lesions-a-newly-innovative-approach
#17
Constantin Tuleasca, Martin Broome, Pascal J Mosimann, Luis Schiappacasse, Michele Zeverino, Antoine Dorenlot, Jérôme Champoudry, Jean Régis, Marc Levivier
BACKGROUND: The purpose of our report is to describe an innovative system used for mandibular immobilization during Gamma Knife surgery (GKS) procedures. It is based on an approach originally developed in Marseille in extracranial lesions, close to or involving the mandible, which may imply a certain degree of movement during the therapeutic image acquisitions and/or GKS treatment. METHODS: The maxillofacial surgeon applied bone titanium self-tapping monocortical screws (4; 2 mm diameter, 10 mm length) between roots of the teeth in the fixed gingiva (upper and lower maxillae) the day before GKS (local anesthesia, 5-10 min time)...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27723655/glioblastoma-multiforme-developed-during-chronic-deep-brain-stimulation-for-parkinson-disease
#18
Takamitsu Yamamoto, Chikashi Fukaya, Toshiki Obuchi, Mitsuru Watanabe, Takashi Ohta, Kazutaka Kobayashi, Hideki Oshima, Atsuo Yoshino
BACKGROUND: In this reported case, 7 years after the start of deep brain stimulation (DBS) of the bilateral subthalamic nucleus (STN), glioblastoma multiforme (GBM) developed around the implanted DBS lead. CASE REPORT: The brain tumor formed from the subcortical white matter to the corpus callosum bilaterally around the DBS lead but did not extend in the direction of the contact points of the lead. The GBM showed a typical invasion pattern of the butterfly type...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27721314/gamma-knife-surgery-for-recurrent-or-residual-supratentorial-primitive-neuroectodermal-tumors
#19
Young-Bem Se, Dong Gyu Kim, Sung Kwon Kim, Jin Wook Kim, Yong Hwy Kim, Chul-Kee Park, Hyun-Tai Chung, Sun-Ha Paek
BACKGROUND: Supratentorial primitive neuroectodermal tumors (PNETs) are highly malignant and rare tumors of the central nervous system. OBJECTIVES: The aim of this study was to determine the role of Gamma Knife surgery (GKS) as a salvage treatment option for patients with recurrent or residual supratentorial PNETs. METHODS: Between 1998 and 2014, 11 patients with supratentorial PNETs were retrospectively analyzed. This series consisted of 7 male and 4 female patients...
2016: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/27676399/xxiind-congress-of-the-european-society-for-stereotactic-and-functional-neurosurgery-madrid-spain-september-28-october-1-2016-abstracts
#20
(no author information available yet)
No abstract text is available yet for this article.
2016: Stereotactic and Functional Neurosurgery
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