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https://www.readbyqxmd.com/read/28223248/endoscopic-intradural-subtemporal-keyhole-approach-with-neuronavigational-assistance-to-the-suprasellar-petroclival-and-ventrolateral-brainstem-regions-an-anatomic-study
#1
Zhemin Ding, Qing Wang, Xiaojie Lu, Xinwei Qian
OBJECTIVE: The purposes of this study were to evaluate the feasibility of a purely endoscopic intradural approach to the suprasellar, petroclival and ventrolateral brainstem regions through a subtemporal keyhole and to assess the value of neuronavigational assistance in the Kawase approach. METHODS: Twenty endoscopic intradural subtemporal keyhole approaches were performed on 10 cadaveric heads. An intradural Kawase approach and a navigation-assisted intradural Kawase approach were then carried out on a random side of each specimen...
February 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28202333/easy-methods-to-make-the-neuronavigated-targeting-of-dlpfc-accurate-and-routinely-accessible-for-rtms
#2
Benjamin Pommier, François Vassal, Claire Boutet, Sophie Jeannin, Roland Peyron, Isabelle Faillenot
OBJECTIVES: Dorsolateral prefrontal cortex (DLPFC) is the main stimulation target for rTMS treatment of depression. DLPFC is located in the middle frontal gyrus and corresponds to the lateral part of Brodmann Areas 9 and 46. Current methods to locate the DLPFC are either based on head landmarks that are inaccurate, or based on MRI-neuronavigation. Neuronavigated-methods are based either on standardized stereotactic coordinates translated to the individual patient or on brain landmarks requiring neuroanatomical skills for their identification...
February 12, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28186470/image-guidance-based-on-mri-for-spinal-interstitial-laser-thermotherapy-technical-aspects-and-accuracy
#3
Claudio E Tatsui, Clarissa N G Nascimento, Dima Suki, Behrang Amini, Jing Li, Amol J Ghia, Jonathan G Thomas, R Jason Stafford, Laurence D Rhines, Juan P Cata, Ashok J Kumar, Ganesh Rao
OBJECTIVE Image guidance for spinal procedures is based on 3D-fluoroscopy or CT, which provide poor visualization of soft tissues, including the spinal cord. To overcome this limitation, the authors developed a method to register intraoperative MRI (iMRI) of the spine into a neuronavigation system, allowing excellent visualization of the spinal cord. This novel technique improved the accuracy in the deployment of laser interstitial thermal therapy probes for the treatment of metastatic spinal cord compression...
February 10, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28163511/use-of-frameless-stereotactic-neuronavigation-and-o-arm-for-transoral-transpalatal-odontoidectomy-to-treat-a-very-high-basilar-invagination
#4
Skanda Moorthy, Amol Raheja, Deepak Agrawal
Frameless stereotactic neuronavigation system has been in wide use since many years for precise localization of cranial tumors and navigation for spinal instrumentation. We present its usage in the localization of odontoid process in a very high basilar invagination for a transoral transpalatal resection of the same. We discuss the technical aspects of assembly of neuronavigation system, O-arm and Mayfield head frame on Allen spine system to achieve precise and accurate localization of high riding odontoid process through an extremely narrow operative corridor...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28137548/intraoperative-mr-imaging-of-cerebral-oxygen-metabolism-during-resection-of-brain-lesions
#5
REVIEW
Andreas Stadlbauer, Andreas Merkel, Max Zimmermann, Björn Sommer, Michael Buchfelder, Anke Meyer-Bäse, Karl Rössler
OBJECTIVE: Tissue oxygen tension is an important parameter for brain tissue viability and its non-invasive intraoperative monitoring in the whole brain is of highly clinical relevance. The purpose of this study was the introduction of a multiparametric quantitative blood oxygenation dependent (qBOLD) MRI approach for intraoperative examination of oxygen metabolism during the resection of brain lesions. METHODS: Sixteen patients suffering from brain lesions were intraoperatively examined twice (before craniotomy and after gross-total resection) using the qBOLD technique and a 1...
January 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28127723/obstructive-hydrocephalus-caused-by-an-unruptured-arteriovenous-malformation-successfully-treated-by-endoscopic-third-ventriculostomy-after-shunt-dysfunction
#6
Charles Champeaux, Céline Botella, Etienne Lefevre, Bertrand Devaux
The authors report on a patient harbouring an unruptured cortical arteriovenous malformation (AVM), who had presented with obstructive hydrocephalus due to compression of the cerebral aqueduct by a large venous varix. A ventriculoperitoneal (VP) shunt was inserted in emergency. Due to its large volume, the AVM was not referred for treatment and a follow-up policy was chosen. After the second VP shunt dysfunction, endoscopic third ventriculostomy was performed under neuronavigation. The procedure went uneventfully and the patient recovered well...
December 22, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28120092/transpedicular-approach-to-thoracic-disc-herniaton-guided-by-3d-navigation-system
#7
Gualtiero Innocenzi, Manuela D'Ercole, Giovanni Cardarelli, Simona Bistazzoni, Francesco Ricciardi, Francesco Marzetti, Francesco Sasso
BACKGROUND: The choice of surgical approach for thoracic disc herniation should consider the location on the axial plane and the consistency of the herniated disc. Calcified midline disc herniations are difficult to remove with a transpedicular approach because of limitations due to blind spots; so they are usually treated via a transthoracic approach, although this entails a high risk of thoracopulmonary injuries. METHODS: In this work we present two cases of calcified midline thoracic disc herniations treated with a transpedicular approach, improved by using a three-dimensional (3D) neuronavigation system to verify the extent of removal on the blind side...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28120080/functional-magnetic-resonance-imaging-fmri-pre-intraoperative-tractography-in-neurosurgery-the-experience-of-sant-andrea-rome-university-hospital
#8
Giancarlo D'Andrea, Giuseppe Trillo', Veronica Picotti, Antonino Raco
BACKGROUND: The goal of neurosurgery for cerebral intraparenchymal neoplasms of the eloquent areas is maximal resection with the preservation of normal functions, and minimizing operative risk and postoperative morbidity. Currently, modern technological advances in neuroradiological tools, neuronavigation, and intraoperative magnetic resonance imaging (MRI) have produced great improvements in postoperative morbidity after the surgery of cerebral eloquent areas. The integration of preoperative functional MRI (fMRI), intraoperative MRI (volumetric and diffusion tensor imaging [DTI]), and neuronavigation, defined as "functional neuronavigation" has improved the intraoperative detection of the eloquent areas...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28115854/multivoxel-magnetic-resonance-spectroscopy-identifies-enriched-foci-of-cancer-stem-like-cells-in-high-grade-gliomas
#9
Tao He, Tianming Qiu, Xiaodong Wang, Hongxing Gui, Xilong Wang, Qikuan Hu, Hechun Xia, Gaoyang Qi, Jinsong Wu, Hui Ma
OBJECTIVE: This study investigated the correlation between choline/creatine (Cho/Cr) ratios determined by multivoxel proton magnetic resonance spectroscopy ((1)H-MRS) and the distribution of cancer stem-like cells (CSLCs) in high-grade gliomas. PATIENTS AND METHODS: Sixteen patients with high-grade gliomas were recruited and underwent (1)H-MRS examination before surgery to identify distinct tumor regions with variable Cho/Cr ratios. Using intraoperative neuronavigation, tumor tissues were accurately sampled from regions with high and low Cho/Cr ratios within each tumor...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28110313/framework-for-2d-3d-image-fusion-of-infrared-thermography-with-preoperative-mri
#10
Nico Hoffmann, Florian Weidner, Peter Urban, Tobias Meyer, Christian Schnabel, Yordan Radev, Gabriele Schackert, Uwe Petersohn, Edmund Koch, Stefan Gumhold, Gerald Steiner, Matthias Kirsch
Multimodal medical image fusion combines information of one or more images in order to improve the diagnostic value. While previous applications mainly focus on merging images from computed tomography, magnetic resonance imaging (MRI), ultrasonic and single-photon emission computed tomography, we propose a novel approach for the registration and fusion of preoperative 3D MRI with intraoperative 2D infrared thermography. Image-guided neurosurgeries are based on neuronavigation systems, which further allow us track the position and orientation of arbitrary cameras...
January 23, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28086851/efficacy-of-intermittent-theta-burst-stimulation-itbs-and-10-hz-high-frequency-repetitive-transcranial-magnetic-stimulation-rtms-in-treatment-resistant-unipolar-depression-study-protocol-for-a-randomised-controlled-trial
#11
Samuel Bulteau, Veronique Sébille, Guillemette Fayet, Veronique Thomas-Ollivier, Thibault Deschamps, Annabelle Bonnin-Rivalland, Edouard Laforgue, Anne Pichot, Pierre Valrivière, Elisabeth Auffray-Calvier, June Fortin, Yann Péréon, Jean-Marie Vanelle, Anne Sauvaget
BACKGROUND: The treatment of depression remains a challenge since at least 40% of patients do not respond to initial antidepressant therapy and 20% present chronic symptoms (more than 2 years despite standard treatment administered correctly). Repetitive transcranial magnetic stimulation (rTMS) is an effective adjuvant therapy but still not ideal. Intermittent Theta Burst Stimulation (iTBS), which has only been used recently in clinical practice, could have a faster and more intense effect compared to conventional protocols, including 10-Hz high-frequency rTMS (HF-rTMS)...
January 13, 2017: Trials
https://www.readbyqxmd.com/read/28068754/intraventricular-cavernous-malformation-review-of-the-literature-and-report-of-three-cases-with-neuroendoscopic-resection
#12
Masoud Shirvani, Alireza Hajimirzabeigi
Intraventricular cavernomas (IVCs) are extremely infrequent and only occur in 2.8 to 10% of patients with cerebral cavernomas. We describe three IVC cases and briefly review previously documented IVC cases in PubMed. Among 136 IVC cases, the mean age of the patients was 36.5 years; the male-to-female ratio was 0.8. The most frequent location was the lateral ventricle (52.6%), and most of the clinical symptoms (74%) were related to mass effects on adjacent brain tissues. Intraventricular hemorrhage occurred in 22...
January 9, 2017: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/28067149/navigation-assisted-trans-inferotemporal-cortex-selective-amygdalohippocampectomy-for-mesial-temporal-lobe-epilepsy-preserving-the-temporal-stem
#13
Haruhiko Kishima, Amami Kato, Satoru Oshino, Naoki Tani, Tomoyuki Maruo, Hui Ming Khoo, Takufumi Yanagisawa, Kotaro Edakawa, Maki Kobayashi, Masataka Tanaka, Koichi Hosomi, Masayuki Hirata, Toshiki Yoshimine
OBJECTIVE: Selective amygdalohippocampectomy (SAH) can be used to obtain satisfactory seizure control in patients with mesial temporal lobe epilepsy (MTLE). Several SAH procedures have been reported to achieve satisfactory outcomes for seizure control, but none yield fully satisfactory outcomes for memory function. We hypothesized that preserving the temporal stem might play an important role. To preserve the temporal stem, we developed a minimally invasive surgical procedure, 'neuronavigation-assisted trans-inferotemporal cortex SAH' (TITC-SAH)...
March 2017: Neurological Research
https://www.readbyqxmd.com/read/28065874/is-complex-sphenoidal-sinus-anatomy-a-contraindication-to-a-transsphenoidal-approach-for-resection-of-sellar-lesions-presentation-of-a-case-series-and-review-of-the-literature
#14
Marco Locatelli, Andrea Di Cristofori, Riccardo Draghi, Giulio Bertani, Claudio Guastella, Lorenzo Pignataro, Giovanna Mantovani, Paolo Rampini, Giorgio Carrabba
BACKGROUND: The transsphenoidal approach (TNS) is considered the gold standard for resection of pituitary adenomas and other sellar region lesions. This approach is guided by few fundamental anatomical landmarks that conduct the surgeon toward the sellar floor. Some anatomical structures may vary a lot (e.g. intrasphenoidal septa, intercarotid distance) and may be difficult to identify. Among those structures, the pneumatization and conformation of the sphenoidal sinus (SS) plays a key role for accessing the floor of the sella and other skull base structures...
January 5, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28062252/using-neuroimaging-to-individualize-tms-treatment-for-depression-toward-a-new-paradigm-for-imaging-guided-intervention
#15
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...
January 3, 2017: NeuroImage
https://www.readbyqxmd.com/read/28057590/modular-endoscopic-medial-maxillectomies-quantitative-analysis-of-surgical-exposure-in-a-preclinical-setting
#16
Alberto Schreiber, Marco Ferrari, Vittorio Rampinelli, Francesco Doglietto, Francesco Belotti, Davide Lancini, Marco Ravanelli, Luigi Fabrizio Rodella, Marco Maria Fontanella, Piero Nicolai
BACKGROUND: Endoscopic medial maxillectomies (EMM) have been named with different nomenclatures. Aim of the present study was to objectively measure the surgical exposure in a preclinical anatomical setting to validate a classification for modular EMMs. MATERIALS AND METHODS: Six cadaver heads underwent computed tomography and images were uploaded on a dedicated software. A neuronavigation system was used to measure areas and volumes of surgical corridors during dissection...
January 2, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28034451/predictors-of-response-to-repetitive-transcranial-magnetic-stimulation-rtms-in-the-treatment-of-major-depressive-disorder
#17
G Beuzon, Q Timour, M Saoud
Repetitive transcranial magnetic stimulation (rTMS), based on the principle of electromagnetic induction, consists of applying series of magnetic impulses to the cerebral cortex so as to modulate neurone activity in a target zone. This technique, still experimental, could prove promising in the field of psychiatry, in particular for the treatment of major depressive disorder. It is important for the clinician to be able to assess the response potential of a given patient to rTMS, and this among other things requires relevant predictive factors to be available...
December 26, 2016: L'Encéphale
https://www.readbyqxmd.com/read/28027173/the-shape-of-the-foramen-ovale-a-visualization-aid-for-cannulation-procedures
#18
Matthew J Zdilla, Kristen M Fijalkowski
Several neurosurgical procedures, including rhizotomy for the management of trigeminal neuralgia, cannulate the foramen ovale (FO) to access intracranial structures. Cannulation procedures, including those utilizing neuronavigational technology, are occasionally complicated by anatomical variation of the FO, sometimes resulting in miscannulation and subsequent adverse events. The FO, while commonly thought of as oval-shaped, has also been described as "almond," "banana," "D shape," "pear," and "triangular." Because of the importance of the FO in neurosurgical procedures and the misunderstanding of FO shape, the aim of this study is to objectively describe the shape of the FO and its most likely shape variation...
December 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28008781/impact-of-intraoperative-mri-guided-resection-on-resection-and-survival-in-patient-with-gliomas-a-meta-analysis
#19
Ping Li, Ruobing Qian, Chaoshi Niu, Xianming Fu
OBJECTIVE: This study addressed the benefit of intraoperative magnetic resonance imaging (iMRI) compared with conventional neuronavigation-guided resection in patients with gliomas. RESEARCH DESIGN AND METHODS: The Medline, PubMed, Cochrane, Google Scholar databases were searched until September 26th, 2015 Randomized controlled trials (RCTs), two-arm prospective studies, retrospective studies in patients with glioblastoma/glioma who had received surgical treatment were included...
December 23, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28007843/clinical-characteristics-and-management-of-growth-hormone-excess-in-patients-with-mccune-albright-syndrome
#20
Yong Yao, Yang Liu, Linjie Wang, Kan Deng, Hongbo Yang, Lin Lu, Feng Feng, Bing Xing, Hui You, Zimeng Jin, Renzhi Wang, Hui Pan, Shi Chen, Huijuan Zhu
OBJECTIVE: McCune-Albright syndrome (MAS) is a sporadic, postzygotic disease presenting with fibrous dysplasia, cafe-au-lait spots and multiple endocrinopathies. Growth hormone (GH) excess is an uncommon but potentially severe complication of MAS. This study aims to describe the clinical manifestations of GH excess in the context of MAS and analyze the responses of these patients to treatments. DESIGN: Retrospective clinical study. METHODS: Clinical data from 52 MAS patients were analyzed...
March 2017: European Journal of Endocrinology
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