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Stereotactic and Functional Neurosurgery

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https://www.readbyqxmd.com/read/28641280/17th-quadrennial-meeting-of-the-world-society-for-stereotactic-and-functional-neurosurgery-berlin-germany-june-26-29-2017-abstracts
#1
(no author information available yet)
No abstract text is available yet for this article.
June 22, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28614824/compact-intraoperative-mri-stereotactic-accuracy-and-future-directions
#2
Daniel Markowitz, Dishen Lin, Sussan Salas, Nina Kohn, Michael Schulder
BACKGROUND: Intraoperative imaging must supply data that can be used for accurate stereotactic navigation. This information should be at least as accurate as that acquired from diagnostic imagers. OBJECTIVES: The aim of this study was to compare the stereotactic accuracy of an updated compact intraoperative MRI (iMRI) device based on a 0.15-T magnet to standard surgical navigation on a 1.5-T diagnostic scan MRI and to navigation with an earlier model of the same system...
June 15, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28605737/a-nationwide-study-of-stereotactic-radiosurgery-in-a-newly-diagnosed-spine-metastasis-population
#3
Seil Sohn, Jinhee Kim, Chun Kee Chung, Na Rae Lee, Ung-Kyu Chang, Moon Jun Sohn
BACKGROUND: Stereotactic radiosurgery (SRS), a technique that is emerging as a new treatment option, has been reported to be an effective, noninvasive treatment for spine metastasis patients. OBJECTIVE: This nationwide study aimed to understand the current state of SRS for spine metastasis. METHODS: Patients in this study were first diagnosed with a metastatic spine tumor between 1 July and 31 December 2011. One group (the SRS group) received SRS at least once within 1 year of diagnosis and the other (the non-SRS group) did not receive SRS...
June 13, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28601874/accuracy-of-intraoperative-computed-tomography-during-deep-brain-stimulation-procedures-comparison-with-postoperative-magnetic-resonance-imaging
#4
Maarten Bot, Pepijn van den Munckhof, Roy Bakay, Glenn Stebbins, Leo Verhagen Metman
OBJECTIVE: To determine the accuracy of intraoperative computed tomography (iCT) in localizing deep brain stimulation (DBS) electrodes by comparing this modality with postoperative magnetic resonance imaging (MRI). BACKGROUND: Optimal lead placement is a critical factor for the outcome of DBS procedures and preferably confirmed during surgery. iCT offers 3-dimensional verification of both microelectrode and lead location during DBS surgery. However, accurate electrode representation on iCT has not been extensively studied...
June 10, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28571034/remotely-programmed-deep-brain-stimulation-of-the-bilateral-subthalamic-nucleus-for-the-treatment-of-primary-parkinson-disease-a-randomized-controlled-trial-investigating-the-safety-and-efficacy-of-a-novel-deep-brain-stimulation-system
#5
Dianyou Li, Chencheng Zhang, Judith Gault, Wei Wang, Jianmin Liu, Ming Shao, Yanyan Zhao, Kristina Zeljic, Guodong Gao, Bomin Sun
BACKGROUND: Deep brain stimulation (DBS) is the most commonly performed surgery for the debilitating symptoms of Parkinson disease (PD). However, DBS systems remain largely unaffordable to patients in developing countries, warranting the development of a safe, economically viable, and functionally comparable alternative. OBJECTIVE: To investigate the efficacy and safety of wirelessly programmed DBS of bilateral subthalamic nucleus (STN) in patients with primary PD...
June 2, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28531896/gamma-knife-radiosurgery-for-vestibular-schwannomas-and-quality-of-life-evaluation
#6
Oren Berkowitz, Yueh-Ying Han, Evelyn O Talbott, Aditya K Iyer, Hideyuki Kano, Douglas Kondziolka, Mason A Brown, L Dade Lunsford
BACKGROUND: Further investigation is needed to look at the impact of vestibular schwannoma (VS) on the health-related quality of life (QOL) of participants who undergo Gamma Knife® radiosurgery (GKRS). OBJECTIVES: Investigators compared the QOL for VS participants to reported US population norms in order to evaluate disease burden and long-term QOL several years after GKRS. METHODS: This cross-sectional study surveyed participants to assess hearing status, tinnitus, imbalance, vertigo, as well as the Short-Form 36-item Health Questionnaire (SF-36)...
May 23, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28501876/stereotactic-radiosurgery-as-initial-surgical-management-for-elderly-patients-with-trigeminal-neuralgia
#7
Jonathan Cohen, Seyed H Mousavi, Amir H Faraji, Berkcan Akpinar, Edward A Monaco, John C Flickinger, Ajay Niranjan, L Dade Lunsford
BACKGROUND: Management of older patients with medically refractory trigeminal neuralgia (TN) is yet a matter of debate. OBJECTIVE: We sought to determine the benefit of stereotactic radiosurgery (SRS) as the sole surgical management in older patients (≥70 years). METHODS: One hundred and twenty-seven patients (≥70 years) with typical TN underwent SRS as initial surgical management. The median maximum dose for the first procedure was 80 Gy...
May 13, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28501875/five-year-neuropsychological-outcome-after-stereotactic-radiofrequency-amygdalohippocampectomy-for-mesial-temporal-lobe-epilepsy-longitudinal-study
#8
Lenka Krámská, Zdeněk Vojtěch, Jiří Lukavský, Michaela Stará, Hana Malíková
PURPOSE: To assess the neuropsychological performance recoded over a period of 5 years after stereotactic radiofrequency amygdalohippocampectomy (SAHE) in the treatment of mesial temporal lobe epilepsy. MATERIAL AND METHODS: Thirty patients (mean age 38 years, 14 females/16 males) were included in this study. Twenty-one patients were treated on the left side, 9 on the right. Patients underwent neuropsychological evaluation by the Wechsler Adult Intelligence Scale-Revised and the Wechsler Memory Scale-Revised preoperatively and 5 years after SAHE...
May 13, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28486221/evaluation-of-clinical-application-and-dosimetric-comparison-of-treatment-plans-of-gamma-knife-and-cyberknife-in-treating-arteriovenous-malformations
#9
Chun-Yuan Kuo, Yi-Chieh Tsai, An-Cheng Shiau, Hao-Wen Cheng, Hsiao-Wei Yu, Yu-Kai Su, Jo-Ting Tsai
PURPOSE: To analyze and compare the characteristics of dose distributions for Leksell Gamma Knife Perfexion (LGK-PFX) and CyberKnife (CK) in treating arteriovenous malformations (AVMs). SUBJECTS AND METHODS: Twenty-four patients with AVMs who received CK radiosurgery at a prescribed dose (PD) of 16-25 Gy in a single fraction were selected. A LGK-PFX treatment plan with the same PD was designed for each patient. Dosimetric values for both systems were compared with respect to the conformity index (CI); selectivity index (SI); gradient index (GI) of 75, 50, and 25% of the PD; heterogeneity index; volume of the brain tissue covered by doses of 10 and 12 Gy; maximum dose delivered to the brainstem; and beam-on time...
May 10, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28433987/radiofrequency-lesions-through-deep-brain-stimulation-electrodes-in-movement-disorders-case-report-and-review-of-the-literature
#10
Javier Pérez-Suárez, Cristina V Torres Díaz, Lydia López Manzanares, Marta Navas García, Jesús Pastor, Patricia Barrio Fernández, Rafael G de Sola
BACKGROUND: Although there are few reports of radiofrequency lesions performed through deep brain stimulation (DBS) electrodes in patients with movement disorders, experience with this method is scarce. METHODS: We present 2 patients who had been previously treated with DBS of subthalamic nuclei (STN) and the ventral intermediate (VIM) nucleus of the thalamus for Parkinson's disease and essential tremor, respectively, and underwent a radiofrequency lesion through their DBS electrodes after developing a hardware infection...
April 22, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28434004/what-do-medical-students-know-about-deep-brain-stimulation
#11
Andreas Wloch, Assel Saryyeva, Hans E Heissler, Christoph Schrader, H Holger Capelle, Joachim K Krauss
BACKGROUND: Deep brain stimulation (DBS) is an established therapy for movement disorders. It is currently under investigation in neuropsychiatric disorders. Neurophobia is a common phenomenon that might have a negative impact in medical education. Little is known about medical students' knowledge about DBS when they enter university and what they learn about it during their medical formation. METHODS: A 10-item questionnaire was designed. Questions addressed indications for DBS, costs of DBS, complications, the percentage of Parkinson disease (PD) patients who might profit from DBS, etc...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28395278/cost-of-deep-brain-stimulation-infection-resulting-in-explantation
#12
Tsinsue Chen, Zaman Mirzadeh, Margaret Lambert, Omar Gonzalez, Ana Moran, Andrew G Shetter, Francisco A Ponce
BACKGROUND: Deep brain stimulation (DBS) hardware infection is a serious complication, often resulting in multiple hardware salvage attempts, hospitalizations, and long-term antibiotic therapy. OBJECTIVES: We aimed to quantify the costs of DBS hardware-related infections in patients undergoing eventual device explantation. METHODS: Of 362 patients who underwent 530 electrode placements (1 January 2010 to 30 December 2014), 16 (4.4%) had at least 2 hardware salvage procedures...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28334712/deep-brain-stimulation-for-the-treatment-of-aggressive-behaviour-considerations-on-pathophysiology-and-target-choice
#13
Michele Rizzi, Carlo Efisio Marras
No abstract text is available yet for this article.
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28324881/optic-radiation-tractography-and-visual-field-deficits-in-laser-interstitial-thermal-therapy-for-amygdalohippocampectomy-in-patients-with-mesial-temporal-lobe-epilepsy
#14
Dali Yin, John A Thompson, Cornelia Drees, Steven G Ojemann, Lidia Nagae, Victoria S Pelak, Aviva Abosch
BACKGROUND/AIMS: Laser interstitial thermal therapy (LITT) has become an alternative to open-resective surgery for refractory mesial temporal lobe epilepsy (MTLE). Occurrence of visual field defects (VFDs) following open surgery for MTLE is reported at 52-100%. We examined the rate of VFDs following LITT for amygdalohippocampectomy (AHE) and correlated the occurrence of VFDs with damage to the optic radiations, assessed by diffusion tensor tractography (DTI). METHODS: We performed a retrospective analysis of 5 patients who underwent LITT-AHE for medically refractory MTLE...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28297702/long-term-effective-thalamic-deep-brain-stimulation-for-neuropathic-tremor-in-two-patients-with-charcot-marie-tooth-disease
#15
Lidia Cabañes-Martínez, Marta Del Álamo de Pedro, Gema de Blas Beorlegui, Ignacio Regidor Bailly-Bailliere
BACKGROUND: It has been described that many Charcot-Marie-Tooth syndrome type 2 patients are affected by a very disabling type of tremor syndrome, the pathophysiology of which remains unclear. Deep brain stimulation (DBS) has been successfully applied to treat most types of tremors by implanting electrodes in the ventral intermediate nucleus of the thalamus (Vim). METHODS: We used DBS applied to the Vim in 2 patients with severe axonal inherited polyneuropathies who developed a disabling tremor...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28259880/modified-fluorodeoxyglucose-metabolism-in-motor-circuitry-by-subthalamic-deep-brain-stimulation
#16
Chunyan Cao, Huiwei Zhang, Dianyou Li, Shikun Zhan, Jing Zhang, Xiaoxiao Zhang, Chuantao Zuo, Bomin Sun
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: Resting-state brain 18F-FDG PET imaging was performed for 8 PD patients before surgery and also 1 year after STN DBS treatment; changes in regional glucose metabolism were identified...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28249263/erratum
#17
(no author information available yet)
No abstract text is available yet for this article.
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28208150/acute-and-subacute-presentations-of-cerebral-edema-following-deep-brain-stimulation-lead-implantation
#18
Albert J Fenoy, Sebastian J Villarreal, Mya C Schiess
BACKGROUND/AIMS: Postoperative cerebral edema around a deep brain stimulation (DBS) electrode is an uncommon reported complication. The goal of this study was to identify instances of postoperative edema based on clinical presentation, and to remark on their management. METHODS: A retrospective chart review was performed on all patients who underwent DBS electrode implantation over a 3-year period. Routine CT imaging on postoperative day (POD) 1 was negative. Patients were identified based on clinical neurological changes, leading to imaging and subsequent diagnosis...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28199998/delayed-intraparenchymal-and-intraventricular-hemorrhage-requiring-surgical-evacuation-after-mri-guided-laser-interstitial-thermal-therapy-for-lesional-epilepsy
#19
Sean M Barber, Luke Tomycz, Timothy George, Dave F Clarke, Mark Lee
BACKGROUND: Symptomatic intracranial hemorrhage is a rare complication of laser interstitial thermal therapy (LITT). OBJECTIVES: To present a unique case of delayed symptomatic intracranial hemorrhage occurring after a LITT procedure for epilepsy in a high-volume center (68 LITT procedures for pediatric epilepsy have been performed). METHODS: An 18-year-old male with epilepsy underwent LITT to an area of heterotopia near the right lateral ventricle...
2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28199993/intraoperative-thresholds-for-capsular-stimulation-are-reliable-for-chronic-pallidal-deep-brain-stimulation-in-dystonia
#20
René Reese, Martin M Reich, Daniela Falk, Günther Deuschl, H Maximilian Mehdorn, Jens Volkmann
BACKGROUND: The threshold current for inducing muscle contractions by stimulation of pyramidal tract fibres adjacent to the globus pallidus internus (GPi) is, besides microelectrode recordings for the determination of nuclear boundaries, currently the only neurophysiological marker for intraoperative refinement of the anatomically planned target point for pallidal deep brain stimulation (GPi-DBS) in dystonia. OBJECTIVES: To determine the relationship between intraoperative thresholds for muscle contractions under general anaesthesia and postoperative thresholds in GPi-DBS...
2017: Stereotactic and Functional Neurosurgery
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