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https://www.readbyqxmd.com/read/28536838/outcomes-of-ventriculoperitoneal-shunt-insertion-in-the-management-of-idiopathic-intracranial-hypertension-in-children
#1
J Heyman, Ronak Ved, A Amato-Watkins, I Bhatti, J Te Water Naude, F Gibbon, P Leach
PURPOSE: The ventriculoperitoneal (VP) shunt has become the procedure of choice for treatment of idiopathic intracranial hypertension (IIH). We aimed to assess the efficacy of frameless stereotactic placement of VP shunts for the management of medically resistant IIH in children and to assess the role of gender and obesity in the aetiology of the condition. METHODS: This is a retrospective analysis of the case notes of 10 patients treated surgically at the University Hospital of Wales in Cardiff, from May 2006 to September 2012...
May 23, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28524449/technical-feasibility-and-safety-of-image-guided-parieto-occipital-ventricular-catheter-placement-with-the-assistance-of-a-wearable-head-up-display
#2
Jang W Yoon, Robert E Chen, Karim ReFaey, Roberto J Diaz, Ronald Reimer, Ricardo J Komotar, Alfredo Quinones-Hinojosa, Benjamin L Brown, Robert E Wharen
BACKGROUND: Wearable technology is growing in popularity as a result of its ability to interface with normal human movement and function. METHODS: Using proprietary hardware and software, neuronavigation images were captured and transferred wirelessly via a password-encrypted network to the head-up display. The operating surgeon wore a loupe-mounted wearable head-up display during image-guided parieto-occipital ventriculoperitoneal shunt placement in two patients...
May 19, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28524128/-placement-of-a-ventricular-catheter-into-narrow-lateral-ventricles-popular-navigation
#3
S S Ozerov, A E Samarin, A V Mel'nikov, E V Kumirova
Placement of a ventricular catheter is the most common and easiest procedure in neurosurgery. Usually, the procedure is performed using anatomical landmarks. However, despite the apparent ease of this manipulation, its results are not always satisfactory. According to the literature data, the rate of improperly placed ventricular catheters amounts to 10-40%, which is directly correlated with the risk of shunt dysfunction. The use of special equipment, such as ultrasound scanners, endoscopes, stereotactic devices, and neuronavigation systems, significantly increases success of surgery...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/28521036/a-novel-approach-of-navigation-assisted-flexible-neuroendoscopy
#4
Jaime G Torres-Corzo, Leonardo Rangel-Castilla, Mario Alberto Islas-Aguilar, Roberto Rodríguez-Della Vecchia
BACKGROUND AND IMPORTANCE: Neuronavigation-assisted endoscopy is commonly used for skull base and intraventricular surgery. Flexible neuroendoscopy offers certain advantages over rigid endoscopy; however, a major disadvantage of the flexible endoscope has been easy disorientation in the flexed position. Neuronavigation-assisted flexible neuroendoscopy was not available until now. This is the first report of the use of navigation-assisted flexible neuroendoscopy in a patient with hydrocephalus...
May 18, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28512039/fluorescein-guided-surgery-for-high-grade-glioma-resection-an-intraoperative-contrast-enhancer
#5
Giuseppe Catapano, Francesco Giovanni Sgulò, Vincenzo Seneca, Giovanni Lepore, Laura Columbano, Giuseppe di Nuzzo
BACKGROUND: Fluorescein sodium salt is widely used in medicine as fluorescein isothiocyanate and commonly named fluorescein (FL). This fluorophore has been used as a fluorescent tracer for many applications, especially in ophthalmic surgery. The initial use in neuro-oncologic field occurred in 1948 in order to control tumor resection margins. After a transient disuse, it has recently had a second spring with the development of dedicated filters for operating microscope, although it is still under evaluation in clinical use...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28507896/intraoperative-resection-control-using-arterial-spin-labeling-proof-of-concept-reproducibility-of-data-and-initial-results
#6
Thomas Lindner, Hajrullah Ahmeti, Isabel Lübbing, Michael Helle, Olav Jansen, Michael Synowitz, Stephan Ulmer
OBJECTIVES: Intraoperative magnetic resonance imaging is a unique tool for visualizing structures during resection and/or for updating any kind of neuronavigation that might be hampered as a result of brain shift during surgery. Advanced MRI techniques such as perfusion-weighted imaging have already proven to be important in the initial diagnosis preoperatively, but can also help to differentiate between tumor and surgically induced changes intraoperatively. Commonly used methods to visualize brain perfusion include contrast agent administration and are therefore somewhat limited...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28506485/surgery-for-dysembryoplastic-neuroepithelial-tumors-and-gangliogliomas-in-eloquent-areas-functional-results-and-seizure-control
#7
B Devaux, F Chassoux, E Landré, B Turak, A Laurent, M Zanello, C Mellerio, P Varlet
INTRODUCTION: Dysembryoplastic neuroepithelial tumors and gangliogliomas are developmental glioneuronal tumors usually revealed by partial epilepsy. High epileptogenicity, childhood epilepsy onset, drug-resistance, temporal location, and seizure freedom after complete resection are common characteristics of both tumors. We report the specificity of surgical management, functional results and seizure outcome in cases of a tumor location in eloquent areas. METHODS: Among 150 patients (88 males, 3-55 years) operated on for refractory epilepsy due to a glioneuronal tumor (1990-2015), 30 (20%, dysembryoplastic neuroepithelial tumors=21; gangliogliomas=9) had a tumor located in an eloquent cortex (sensory-motor, insular or language areas)...
May 12, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28500927/comparison-of-electromagnetic-neuronavigation-system-and-free-hand-method-for-ventricular-catheter-placement-in-internal-shunt
#8
Vianney Gilard, Nicolas Magne, Emmanuel Gerardin, Sophie Curey, Valérie Pelletier, Pierre Hannequin, Stéphane Derrey
OBJECTIVE: Optimal ventricular catheter positioning is able to reduce the risk of catheter dysfunction, and subsequently the risk of multiple revision surgery. The objective of our study was to compare the proportion of optimal ventricular catheter placements in a cohort of patients operated for ventriculoperitoneal (VP) shunt between a free-hand group and a neuronavigated group. PATIENTS AND METHODS: Twenty patients with hydrocephalus requiring VP shunt were prospectively included in this study...
May 8, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28484567/clival-defect-causing-primary-spontaneous-rhinorrhea
#9
Vivek Tandon, Kanwaljeet Garg, Ashish Suri, Ajay Garg
Primary cerebrospinal fluid (CSF) rhinorrhea due to a defect in clivus is an extremely rare entity, till date only four such cases are reported in the world literature. We present a case of 55-year-old female who presented with primary spontaneous CSF rhinorrhea, for which endonasal surgery was performed about 9 years back. Patient developed recurrent CSF leak with a history of meningitis. Repeat imaging showed clival defect causing CSF leak. Transsphenoidal repair was performed under neuronavigation. In this paper, we discuss the possible mechanism of fistula formation and literature is reviewed...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28476213/reprint-of-using-neuroimaging-to-individualize-tms-treatment-for-depression-toward-a-new-paradigm-for-imaging-guided-intervention
#10
Bruce M Luber, Simon Davis, Elisabeth Bernhardt, Andrada Neacsiu, Lori Kwapil, Sarah H Lisanby, Timothy J Strauman
The standard clinical technique for using repetitive transcranial magnetic stimulation (rTMS) for major depressive disorder (MDD) is associated with limited efficacy to date. Such limited efficacy may be due to reliance on scalp-based targeting rather than state-of-the-science methods which incorporate fMRI-guided neuronavigation based on a specific model of neurocircuit dysfunction. In this review, we examine such a specific model drawn from regulatory focus theory, which postulates two brain/behavior systems, the promotion and prevention systems, underlying goal pursuit...
May 1, 2017: NeuroImage
https://www.readbyqxmd.com/read/28471721/comparison-of-treatment-outcomes-between-10-and-20-eeg-electrode-location-system-guided-and-neuronavigation-guided-repetitive-transcranial-magnetic-stimulation-in-chronic-tinnitus-patients-and-target-localization-in-the-asian-brain
#11
Tae-Soo Noh, Yoon-Chan Rah, Jeong Sug Kyong, June Sic Kim, Moo Kyun Park, Jun Ho Lee, Seung Ha Oh, Chun Kee Chung, Myung-Whan Suh
OBJECTIVE: rTMS is a non-invasive method that applies a brief magnetic pulse to the cortex and is regarded as a possible therapeutic method for tinnitus control. However, it remains unclear whether the rTMS treatment effect would be the same in tinnitus patients receiving the 10-20 EEG-based target localization as in those receiving imaging-based neuronavigation target localization. METHODS: We compared the treatment outcome of the 10-20 EEG-guided rTMS (Group 1) with that of the neuronavigation-guided rTMS (Group 2)...
May 4, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28465273/assessment-and-treatment-of-peritumoral-cortical-veins-in-parasagittal-meningiomas-with-application-of-3d-imaging-fusion-model
#12
Tengkun Yin, Jianjun Gu, Yinxing Huang, Liangfeng Wei, Jinxi Gao, Shousen Wang
BACKGROUND: Operation of cortical veins is the keystone of parasagittal meningiomas (PSM) resection. Little is known about pathological changes of the veins and proper treatment. We built three-dimensional (3D) image fusion models by neuronavigation to analyze the features of peritumoral cortical veins for PSM and explore intraoperative treatment options. METHODS: We performed a prospective study of 42 consecutive surgically treated PSM patients who underwent preoperative evaluation of peritumoral cortical veins using a 3D venous-tumor fusion model established by a neuronavigation system...
April 29, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28464582/-clinical-useness-of-multimodal-techniques-in-microsurgical-resection-of-cerebral-arteriovenous-malformation
#13
Y Y Zhang, J L Jiang, Z H Sun, C Wu, W Shi, Z Xue, S Y Feng, X G Yu
Objective: To explore the clinical useness of intraoperative functional neuronavigation and fluorescent indocyanine green(ICG) angiography as well as electrophysiological evaluation during microsurgical resection of cerebral arteriovenous malformations (AVM). Methods: A series of 42 consecutive cases with AVM underwent microsurgery by intraoperative functional neuronavigation at Department of Neurosurgery of People's Liberation Army General Hospital from January 2009 to February 2015 were retrospectively analyzed...
May 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28457176/3d-digital-subtracted-ct-angiography-to-evaluate-the-venous-anatomy-in-extra-axial-tumors-invading-the-major-dural-venous-sinuses
#14
Stéphanie Lenck, Damien Bresson, Anne-Laure Bernat, Jean-Pierre Saint-Maurice, Marc-Antoine Labeyrie, Sébastien Froelich, Emmanuel Houdart
Background Investigation of the venous system surrounding a tumor that is invading a dural sinus is of great use for guiding the surgical excision. Non-invasive imaging is often inadequate since enhancement of the tumor causes it to blend with the contrast of the venous vascular structures. Conventional two-dimensional angiography is also often insufficient. Objective The objective of this study was to report regarding the potential of three-dimensional digital subtracted computed tomography angiography (3D DS-CTA) as a technique to preoperatively explore these tumors...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28454819/causal-role-of-the-posterior-parietal-cortex-for-two-digit-mental-subtraction-and-addition-a-repetitive-tms-study
#15
Maria Montefinese, Cristina Turco, Francesco Piccione, Carlo Semenza
Although parietal areas of the left hemisphere are known to be involved in simple mental calculation, the possible role of the homologue areas of the right hemisphere in mental complex calculation remains debated. In the present study, we tested the causal role of the posterior parietal cortex of both hemispheres in two-digit mental addition and subtraction by means of neuronavigated repetitive TMS (rTMS), investigating possible hemispheric asymmetries in specific parietal areas. In particular, we performed two rTMS experiments, which differed only for the target sites stimulated, on independent samples of participants...
April 26, 2017: NeuroImage
https://www.readbyqxmd.com/read/28451520/three-dimensional-computer-simulated-navigation-in-endoscopic-neurosurgery
#16
Roberta K Sefcik, Jonathan Rasouli, Joshua B Bederson, Raj K Shrivastava
BACKGROUND: In order to address the pre- and perioperative need for visualization and prediction of patient-specific anatomy for surgical planning, endoscopic neurosurgeons have increasingly relied on computerized navigation devices to guide their surgical approaches. OBJECTIVE: This manuscript aims to review: 1) the use of neuronavigation in endoscopic neurosurgery for pre-operative planning, 2) the intraoperative advantages of neuronavigation in endoscopic neurosurgery, and 3) the effects of navigation guidance on operative time, registration accuracy, brain shift, and avoidance of complications...
June 2017: Interdisciplinary Neurosurgery: Advanced Techniques and Case Management
https://www.readbyqxmd.com/read/28434959/analysis-of-137-patients-who-underwent-endoscopic-transsphenoidal-pituitary-adenoma-resection-under-high-field-intraoperative-magnetic-resonance-imaging-navigation
#17
Huaping Zhang, Fuyu Wang, Tao Zhou, Peng Wang, Xiaolei Chen, Jiashu Zahng, Dingbiao Zhou
OBJECTIVE: Endonasal resection of the pituitary embodies the minimally invasive concept. Pure endoscopic resection of pituitary adenoma has become the most popular surgical approach. Intraoperative magnetic resonance imaging (iMRI) systems have been in use for endoscopic resection of pituitary adenomas. The study aimed to evaluate the effectiveness of iMRI and neuroimaging navigation techniques during endoscopic endonasal transsphenoidal surgery of pituitary adenomas. METHODS: Data from 137 patients who underwent resection of endoscopic pituitary adenoma under 1...
April 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28425048/biopsy-targeting-with-dynamic-contrast-enhanced-versus-standard-neuronavigation-mri-in-glioma-a-prospective-double-blinded-evaluation-of-selection-benefits
#18
Vera C Keil, Bogdan Pintea, Gerrit H Gielen, Susanne Greschus, Rolf Fimmers, Jürgen Gieseke, Matthias Simon, Hans H Schild, Dariusch R Hadizadeh
Current biopsy planning based on contrast-enhanced T1W (CET1W) or FLAIR sequences frequently delivers biopsy samples that are not in concordance with the gross tumor diagnosis. This study investigates whether the quantitative information of transfer constant K(trans) maps derived from T1W dynamic contrast-enhanced MRI (DCE-MRI) can help enhance the quality of biopsy target selection in glioma. 28 patients with suspected glioma received MRI including DCE-MRI and a standard neuronavigation protocol of 3D FLAIR- and CET1W data sets (0...
April 19, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28413707/disrupting-dorsolateral-prefrontal-cortex-by-rtms-reduces-the-p300-based-marker-of-deception
#19
Inga Karton, Talis Bachmann
OBJECTIVE: Quite many studies have revealed certain brain-process signatures indicative of subject's deceptive behavior. These signatures are neural correlates of deception. However, much less is known about whether these signatures can be modified by noninvasive brain stimulation techniques representing methods of causal intervention of brain processes and the corresponding behavior. Our purpose was to explore whether such methods have an effect on these signatures. METHODS: It is well known that electroencephalographic event-related potential component, P300, is sensitive to perception of critical items in a concealed information test, one of the central methods in deception studies...
April 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28391583/3d-intra-operative-ultrasound-and-mr-image-guidance-pursuing-an-ultrasound-based-management-of-brainshift-to-enhance-neuronavigation
#20
Marco Riva, Christoph Hennersperger, Fausto Milletari, Amin Katouzian, Federico Pessina, Benjamin Gutierrez-Becker, Antonella Castellano, Nassir Navab, Lorenzo Bello
BACKGROUND: Brainshift is still a major issue in neuronavigation. Incorporating intra-operative ultrasound (iUS) with advanced registration algorithms within the surgical workflow is regarded as a promising approach for a better understanding and management of brainshift. This work is intended to (1) provide three-dimensional (3D) ultrasound reconstructions specifically for brain imaging in order to detect brainshift observed intra-operatively, (2) evaluate a novel iterative intra-operative ultrasound-based deformation correction framework, and (3) validate the performance of the proposed image-registration-based deformation estimation in a clinical environment...
April 8, 2017: International Journal of Computer Assisted Radiology and Surgery
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