keyword
MENU ▼
Read by QxMD icon Read
search

neuronavigation

keyword
https://www.readbyqxmd.com/read/27920491/interactive-navigation-guided-ophthalmic-plastic-surgery-navigation-enabling-of-telescopes-and-their-use-in-endoscopic-lacrimal-surgeries
#1
Mohammad Javed Ali, Swati Singh, Milind N Naik, Swathi Kaliki, Tarjani Vivek Dave
PURPOSE: The aims of this study were to report the preliminary experience of using telescopes, which were enabled for navigation guidance, and their utility in complex endoscopic lacrimal surgeries. METHODS: Navigation enabling of the telescope was achieved by using the AxiEM™ malleable neuronavigation shunt stylet. Image-guided dacryolocalization was performed in five patients using the intraoperative image-guided StealthStation™ system in the electromagnetic mode...
2016: Clinical Ophthalmology
https://www.readbyqxmd.com/read/27867131/neuronavigation-based-on-track-density-image-extracted-from-deterministic-high-definition-fiber-tractography-a-case-report
#2
Peng-Hu Wei, Fei Cong, Ge Chen, Ming-Chu Li, Xin-Guang Yu, Yu-Hai Bao
BACKGROUND: Diffusion tensor imaging(DTI)-based navigation is unable to resolve crossing fibers or to determine with accuracy the fanning, origin, and termination of fibers. It is important to improve the accuracy of localizing white matter fibers for improved surgical approaches. We propose a solution to this problem using navigation based on track density imaging(TDI)extracted from high definition fiber tractography(HDFT). CASE DESCRIPTION: A 28-year-old asymptomatic female patient with a left-lateral ventricle meningioma was enrolled in the present study...
November 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27858266/reverse-phase-protein-arrays-enable-glioblastoma-molecular-subtyping
#3
Gregor Hutter, Martin Sailer, Tej Deepak Azad, André O von Bueren, Peter Nollau, Stephan Frank, Cristobal Tostado, Durga Sarvepalli, Arkasubhra Ghosh, Marie-Françoise Ritz, Jean-Louis Boulay, Luigi Mariani
In the present study we investigated the phosphorylation status of the 12 most important signaling cascades in glioblastomas. More than 60 tumor and control biopsies from tumor center and periphery (based on neuronavigation) were subjected to selective protein expression analysis using reverse-phase protein arrays (RPPA) incubated with antibodies against posttranslationally modified cancer pathway proteins. The ratio between phosphorylated (or modified) and non-phosphorylated protein was assessed. All samples were histopathologically validated and proteomic profiles correlated with clinical and survival data...
November 17, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27834593/an-mrs-and-pet-guided-biopsy-tool-for-intraoperative-neuronavigational-systems
#4
Matthew Grech-Sollars, Babar Vaqas, Gerard Thompson, Tara Barwick, Lesley Honeyfield, Kevin O'Neill, Adam D Waldman
OBJECTIVE Glioma heterogeneity and the limitations of conventional structural MRI for identifying aggressive tumor components can limit the reliability of stereotactic biopsy and, hence, tumor characterization, which is a hurdle for developing and selecting effective treatment strategies. In vivo MR spectroscopy (MRS) and PET enable noninvasive imaging of cellular metabolism relevant to proliferation and can detect regions of more highly active tumor. Here, the authors integrated presurgical PET and MRS with intraoperative neuronavigation to guide surgical biopsy and tumor sampling of brain gliomas with the aim of improving intraoperative tumor-tissue characterization and imaging biomarker validation...
November 11, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27829944/neuronavigation-guided-endoscopy-for-intraventricular-tumors-in-adult-patients-without-hydrocephalus
#5
Krzysztof Stachura, Ewelina Grzywna
INTRODUCTION: Intraventricular endoscopic operations are usually undertaken in patients with an enlarged ventricular system that provides good access to the ventricles, proper anatomic orientation and safety of maneuvers within the ventricles. AIM: The preliminary assessment of the feasibility of endoscopic procedures in cases occurring without hydrocephalus. MATERIAL AND METHODS: Eleven patients with intraventricular tumor diagnosed in neuroimaging studies were included in the study...
2016: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/27813460/comparative-anatomical-analysis-of-the-transcallosal-transchoroidal-and-transcallosal-transforniceal-transchoroidal-approaches-to-the-third-ventricle
#6
João Luiz Vitorino Araujo, José C E Veiga, Hung Tzu Wen, Almir F de Andrade, Manoel J Teixeira, José P Otoch, Albert L Rhoton, Mark C Preul, Robert F Spetzler, Eberval G Figueiredo
OBJECTIVE Access to the third ventricle is a veritable challenge to neurosurgeons. In this context, anatomical and morphometric studies are useful for establishing the limitations and advantages of a particular surgical approach. The transchoroidal approach is versatile and provides adequate exposure of the middle and posterior regions of the third ventricle. However, the fornix column limits the exposure of the anterior region of the third ventricle. There is evidence that the unilateral section of the fornix column has little effect on cognitive function...
November 4, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27798987/acute-triventricular-hydrocephalus-caused-by-choroid-plexus-cysts-a-diagnostic-and-neurosurgical-challenge
#7
Pietro Spennato, Carmela Chiaramonte, Domenico Cicala, Vittoria Donofrio, Manlio Barbarisi, Anna Nastro, Giuseppe Mirone, Vincenzo Trischitta, Giuseppe Cinalli
OBJECTIVE Intraventricular choroid plexus cysts are unusual causes of acute hydrocephalus in children. Radiological diagnosis of intraventricular choroid plexus cysts is difficult because they have very thin walls and fluid contents similar to CSF and can go undetected on routine CT studies. METHODS This study reports the authors' experience with 5 patients affected by intraventricular cysts originating from the choroid plexus. All patients experienced acute presentation with rapid neurological deterioration, sometimes associated with hypothalamic dysfunction, and required urgent surgery...
November 2016: Neurosurgical Focus
https://www.readbyqxmd.com/read/27765721/neuronavigated-fiber-dissection-with-pial-preservation-a-laboratory-model-to-simulate-opercular-approaches-to-insular-tumors
#8
Emmanuel Mandonnet, Juan Martino, Silvio Sarubbo, Francesco Corrivetti, Schahraed Bouazza, Damien Bresson, Hugues Duffau, Sebastien Froelich
BACKGROUND: Advances in the oncological and functional results of insular surgery have been reported recently. Such successes have been made possible by the advent of the transopercular approach under awake monitoring and by the improved anatomical and functional knowledge of the white matter pathways surrounding the insula. Nonetheless, given the rarity of insular tumors, it is difficult to get familiar with the complex 3D anatomy of the different neuronal and vascular structures encountered during a transopercular insular resection...
October 17, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27755419/multimodal-neuronavigation-in-microsurgery-resection-of-brainstem-tumors
#9
Fang Zhang, WenMing Hong, Yan Guo, QianYing Guo, XiaoPeng Hu
BACKGROUND: Microsurgery is a common treatment of brainstem tumors. However, misdirection, vascular damage, nerves injuries, paralysis, even death are all well-known complications, and the risk of adverse events is more likely in less experienced operators. This study was aimed to validate the accuracy of multimodal neuronavigation during microsurgery resection of brainstem tumors. METHODS: Ten patients with brainstem tumors underwent preoperative MRI, diffusion tensor imaging, computed tomography, three-dimensional print, and images loaded into the neuronavigation platform were used for its segmentation and preoperative planning...
October 14, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27749549/percutaneous-radiofrequency-thermocoagulation-for-trigeminal-neuralgia-using-neuronavigation-guided-puncture-from-a-mandibular-angle
#10
Weihua Ding, Shuping Chen, Rong Wang, Jun Cai, Yuan Cheng, Liang Yu, Qinghua Li, Fang Deng, Shengmei Zhu, Wenhua Yu
Percutaneous radiofrequency thermocoagulation (RFT) of the Gasserian ganglion is an effective treatment for primary trigeminal neuralgia (pTN). Currently Hartel anterior approach is the most commonly used method to access the Gasserian ganglion. However, this approach is associated with high recurrence rate and technical difficulties in certain patients with foramen ovale (FO) anatomical variations. In the present study, we assessed the feasibility of accessing the Gasserian ganglion through the FO from a mandibular angle under computed tomography (CT) and neuronavigation guidance...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27743248/use-of-the-brainlab-disposable-stylet-for-endoscope-and-peel-away-navigation
#11
Jane Halliday, Ian Kamaly
BACKGROUND: Neuronavigation, the ability to perform real-time intra-operative guidance during cranial and/or spinal surgery, has increased both accuracy and safety in neurosurgery [2]. Cranial navigation of existing surgical instruments using Brainlab requires the use of an instrument adapter and clamp, which in our experience renders an endoscope 'top-heavy', difficult to manipulate, and the process of registration of the adapter quite time-consuming. METHODS: A Brainlab Disposable Stylet was used to navigate fenestration of an entrapped temporal horn in a pediatric case...
October 14, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27738899/the-value-of-3d-fiesta-mri-in-detecting-non-iatrogenic-cerebrospinal-fluid-rhinorrhoea-correlations-with-endoscopic-endonasal-surgery
#12
Tao Xie, Wei Sun, Xiaobiao Zhang, Tengfei Liu, Hailing Ding, Fan Hu, Yong Yu, Ye Gu
BACKGROUND: In this study, we investigated the value of three-dimensional (3D) fast-imaging employing steady-state acquisition (FIESTA) magnetic resonance imaging (MRI) in detecting non-iatrogenic cerebrospinal fluid (CSF) rhinorrhoea and compared it with regular MRI and 3D magnetisation prepared rapid acquisition gradient echo (MPRAGE) MRI sequences, as well as high-resolution computed tomography (HRCT) imaging. We also present the endoscopic experiences of such cases. METHOD: From June 2011 to Feb 2016, 17 patients with non-iatrogenic cerebrospinal fluid rhinorrhoea were included...
October 13, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27716645/how-to-include-the-variability-of-tms-responses-in-simulations-a-speech-mapping-case-study
#13
N De Geeter, P Lioumis, A Laakso, G Crevecoeur, L Dupré
When delivered over a specific cortical site, TMS can temporarily disrupt the ongoing process in that area. This allows mapping of speech-related areas for preoperative evaluation purposes. We numerically explore the observed variability of TMS responses during a speech mapping experiment performed with a neuronavigation system. We selected four cases with very small perturbations in coil position and orientation. In one case (E) a naming error occurred, while in the other cases (NEA, B, C) the subject appointed the images as smoothly as without TMS...
October 7, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27715437/aggressive-resection-at-the-infiltrative-margins-of-glioblastoma-facilitated-by-intraoperative-fluorescein-guidance
#14
Justin A Neira, Timothy H Ung, Jennifer S Sims, Hani R Malone, Daniel S Chow, Jorge L Samanamud, George J Zanazzi, Xiaotao Guo, Stephen G Bowden, Binsheng Zhao, Sameer A Sheth, Guy M McKhann, Michael B Sisti, Peter Canoll, Randy S D'Amico, Jeffrey N Bruce
OBJECTIVE Extent of resection is an important prognostic factor in patients undergoing surgery for glioblastoma (GBM). Recent evidence suggests that intravenously administered fluorescein sodium associates with tumor tissue, facilitating safe maximal resection of GBM. In this study, the authors evaluate the safety and utility of intraoperative fluorescein guidance for the prediction of histopathological alteration both in the contrast-enhancing (CE) regions, where this relationship has been established, and into the non-CE (NCE), diffusely infiltrated margins...
October 7, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27704279/improvement-of-the-insertion-axis-for-cochlear-implantation-with-a-robot-based-system
#15
Renato Torres, Guillaume Kazmitcheff, Daniele De Seta, Evelyne Ferrary, Olivier Sterkers, Yann Nguyen
It has previously reported that alignment of the insertion axis along the basal turn of the cochlea was depending on surgeon' experience. In this experimental study, we assessed technological assistances, such as navigation or a robot-based system, to improve the insertion axis during cochlear implantation. A preoperative cone beam CT and a mastoidectomy with a posterior tympanotomy were performed on four temporal bones. The optimal insertion axis was defined as the closest axis to the scala tympani centerline avoiding the facial nerve...
October 4, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27695532/role-of-endoscopic-third-ventriculostomy-in-tuberculous-meningitis-with-hydrocephalus
#16
Yad R Yadav, Vijay S Parihar, Mina Todorov, Yatin Kher, Ishwar D Chaurasia, Sonjjay Pande, Hemant Namdev
Hydrocephalus is one of the commonest complications of tuberculous meningitis (TBM). It can be purely obstructive, purely communicating, or due to combinations of obstruction in addition to defective absorption of cerebrospinal fluid (CSF). Endoscopic third ventriculostomy (ETV) as an alternative to shunt procedures is an established treatment for obstructive hydrocephalus in TBM. ETV in TBM hydrocephalus can be technically very difficult, especially in acute stage of disease due to inflamed, thick, and opaque third ventricle floor...
October 2016: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/27695249/the-use-of-intraoperative-computed-tomography-navigation-in-pituitary-surgery-promises-a-better-intraoperative-orientation-in-special-cases
#17
Stefan Linsler, Sebastian Antes, Sebastian Senger, Joachim Oertel
OBJECTIVE: The safety of endoscopic skull base surgery can be enhanced by accurate navigation in preoperative computed tomography (CT) and magnetic resonance imaging (MRI). Here, we report our initial experience of real-time intraoperative CT-guided navigation surgery for pituitary tumors in childhood. MATERIALS AND METHODS: We report the case of a 15-year-old girl with a huge growth hormone-secreting pituitary adenoma with supra- and perisellar extension. Furthermore, the skull base was infiltrated...
October 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/27692927/effects-of-theta-burst-stimulation-on-suprahyoid-motor-cortex-excitability-in-healthy-subjects
#18
Tuo Lin, Lisheng Jiang, Zulin Dou, Cheng Wu, Feng Liu, Guangqing Xu, Yue Lan
BACKGROUND: Continuous theta burst stimulation (cTBS) and intermittent TBS (iTBS) are powerful patterns of repetitive transcranial magnetic stimulation (rTMS), with substantial potential for motor function rehabilitation post-stroke. However, TBS of suprahyoid motor cortex excitability has not been investigated. This study investigated TBS effects on suprahyoid motor cortex excitability and its potential mechanisms in healthy subjects. METHODS: Thirty-five healthy subjects (23 females; mean age = 21...
August 24, 2016: Brain Stimulation
https://www.readbyqxmd.com/read/27688208/resection-of-highly-language-eloquent-brain-lesions-based-purely-on-rtms-language-mapping-without-awake-surgery
#19
Sebastian Ille, Nico Sollmann, Vicki M Butenschoen, Bernhard Meyer, Florian Ringel, Sandro M Krieg
BACKGROUND: The resection of left-sided perisylvian brain lesions harbours the risk of postoperative language impairment. Therefore the individual patient's language distribution is investigated by intraoperative direct cortical stimulation (DCS) during awake surgery. Yet, not all patients qualify for awake surgery. Non-invasive language mapping by repetitive navigated transcranial magnetic stimulation (rTMS) has frequently shown a high correlation in comparison with the results of DCS language mapping in terms of language-negative brain regions...
September 29, 2016: Acta Neurochirurgica
https://www.readbyqxmd.com/read/27675286/use-of-neuronavigated-transcranial-magnetic-stimulation-and-diffusion-tensor-imaging-to-avoid-motor-cortex-complications-in-robotic-stereotactic-radiation-therapy-planning
#20
J E Palmgren, E Kallioniemi, P Julkunen
No abstract text is available yet for this article.
October 1, 2016: International Journal of Radiation Oncology, Biology, Physics
keyword
keyword
46745
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"