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Neurosurgical planning

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https://www.readbyqxmd.com/read/29139096/the-modified-frailty-index-and-30-day-adverse-events-in-oncologic-neurosurgery
#1
Brett E Youngerman, Alfred I Neugut, Jingyan Yang, Dawn L Hershman, Jason D Wright, Jeffrey N Bruce
The modified frailty index (mFI) is emerging as a leading measure for preoperative risk assessment using routinely available medical record data. Our objective was to determine if mFI predicts morbidity and mortality in the diverse national cohort of patients undergoing neurosurgery for intracranial neoplasms. We identified patients in the National Surgical Quality Improvement Program who underwent oncologic neurosurgery procedures between 2008 and 2012. The mFI, ranging from 0 to 1, was calculated as the proportion of 11 possible risk factors present...
November 14, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29134342/an-introduction-and-overview-of-machine-learning-in-neurosurgical-care
#2
REVIEW
Joeky T Senders, Mark M Zaki, Aditya V Karhade, Bliss Chang, William B Gormley, Marike L Broekman, Timothy R Smith, Omar Arnaout
BACKGROUND: Machine learning (ML) is a branch of artificial intelligence that allows computers to learn from large complex datasets without being explicitly programmed. Although ML is already widely manifest in our daily lives in various forms, the considerable potential of ML has yet to find its way into mainstream medical research and day-to-day clinical care. The complex diagnostic and therapeutic modalities used in neurosurgery provide a vast amount of data that is ideally suited for ML models...
November 13, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29132231/the-use-of-desflurane-for-neurosurgical-procedures-in-rhesus-macaque-macaca-mulatta
#3
Henri Gmj Bertrand, Charlotte Sandersen, Paul A Flecknell
Volatile agents are widely used to anaesthetise laboratory non-human primates as they allow a rapid induction and recovery as well as an easy adjustment of the anaesthesia plan. Desflurane is currently the volatile agent with the lowest solubility in blood, and hence enables the most rapid onset of anaesthesia and most rapid recovery. This study aimed to investigate the suitability of desflurane for maintenance of general anaesthesia in rhesus macaques undergoing elective experimental neurosurgery. Fourteen primates (five males and nine females) were sedated with ketamine (10 mg kg(-1)) and anaesthesia was induced with propofol (usually 8 mg kg(-1) IV)...
January 1, 2017: Laboratory Animals
https://www.readbyqxmd.com/read/29125443/neurosurgical-management-in-children-with-bleeding-diathesis-auditing-neurological-outcome
#4
Zaitun Zakaria, Chandrasekaran Kaliaperumal, Darach Crimmins, John Caird
OBJECTIVE The aim of this study was to assess the outcome of neurosurgical treatment in children with bleeding diathesis and also to evaluate the current management plan applied in the authors' service. METHODS The authors retrospectively analyzed all cases in which neurosurgical procedures were performed in pediatric patients presenting with intracranial hematoma due to an underlying bleeding tendency over a 5-year period at their institution. They evaluated the patients' neurological symptoms from the initial referral, hematological abnormalities, surgical treatment, neurological outcome, and scores on the Pediatric Glasgow Outcome Scale-Extended (GOS-E Peds) obtained 1 year after the last operation...
November 10, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29119039/osirix-software-as-a-preoperative-planning-tool-in-cranial-neurosurgery-a-step-by-step-guide-for-neurosurgical-residents
#5
REVIEW
Toma Spiriev, Vladimir Nakov, Lili Laleva, Christo Tzekov
Background: OsiriX (Pixmeo, Switzerland) is an open-source Digital Imaging and Communications in Medicine (DICOM) viewer that is gaining more and more attention in the neurosurgical community because of its user-friendly interface, powerful three-dimensional (3D) volumetric rendering capabilities, and various options for data integration. This paper presents in detail the use of OsiriX software as a preoperative planning tool in cranial neurosurgery. Methods: In January 2013, OsiriX software was introduced into our clinical practice as a preoperative planning tool...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29116307/cryptococcoma-mimicking-a-brain-tumor-in-an-immunocompetent-patient-case-report-of-an-extremely-rare-presentation
#6
Aline Lariessy Campos Paiva, Guilherme Brasileiro de Aguiar, Renan Maximilian Lovato, Arthus Vilar Deolindo Zanetti, Alexandros Theodoros Panagopoulos, José Carlos Esteves Veiga
CONTEXT: Central nervous system (CNS) infectious diseases have high prevalence in developing countries and their proper diagnosis and treatment are very important for public health planning. Cryptococcus neoformans is a fungus that may cause several CNS manifestations, especially in immunocompromised patients. Cryptococcal meningitis is the most common type of involvement. Mass-effect lesions are uncommon: they are described as cryptococcomas and their prevalence is even lower among immunocompetent patients...
November 6, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/29102970/cabergoline-induced-fibrosis-of-prolactinomas-a-neurosurgical-perspective
#7
Niraj Mohan, Yi Yan Chia, Giap Hean Goh, Eric Ting, Kejia Teo, Tseng Tsai Yeo
Presently, the standard of care for prolactinomas, a type of pituitary adenoma, is dopaminergic agents such as bromocriptine and cabergoline. However, dopaminergic agents may induce fibrosis of cardiac valves leading to valvular insufficiency, necessitating surgical treatment of prolactinoma. Fibrosis of prolactinoma can be induced by prolonged medical treatment with bromocriptine, and this usually occurs after years of treatment. In comparison to bromocriptine, there have been no reports of cabergoline-induced fibrosis of prolactinoma...
November 3, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/29076473/-the-management-of-patients-with-new-epileptic-seizures-in-the-early-period-after-resection-of-hemispheric-tumors-two-case-reports-and-a-literature-review
#8
E Yu Sokolova, I A Savin, A B Kadasheva, A V Gavryushin, D I Pitskhelauri, A V Kozlov, K N Lapteva, V V Podlepich
Epileptic seizures developing for the first time after a neurosurgical intervention (de novo seizures) are a challenge for choosing an optimal treatment. The pathogenesis of these seizures is often associated with factors that become inactive in the early postoperative period. These seizures can not serve the basis for diagnosing symptomatic epilepsy and should be regarded as a brain response to surgery, and patients do not need anticonvulsant therapy that reduces the quality of life. But in some situations, new early postoperative seizures serve the onset of symptomatic epilepsy and require prolonged anticonvulsant therapy...
2017: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/29068642/new-directions-in-3d-medical-modeling-3d-printing-anatomy-and-functions-in-neurosurgical-planning
#9
Paola Gargiulo, Iris Árnadóttir, Magnús Gíslason, Kyle Edmunds, Ingvar Ólafsson
This paper illustrates the feasibility and utility of combining cranial anatomy and brain function on the same 3D-printed model, as evidenced by a neurosurgical planning case study of a 29-year-old female patient with a low-grade frontal-lobe glioma. We herein report the rapid prototyping methodology utilized in conjunction with surgical navigation to prepare and plan a complex neurosurgery. The method introduced here combines CT and MRI images with DTI tractography, while using various image segmentation protocols to 3D model the skull base, tumor, and five eloquent fiber tracts...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29065569/new-directions-in-3d-medical-modeling-3d-printing-anatomy-and-functions-in-neurosurgical-planning
#10
Paolo Gargiulo, Íris Árnadóttir, Magnús Gíslason, Kyle Edmunds, Ingvar Ólafsson
This paper illustrates the feasibility and utility of combining cranial anatomy and brain function on the same 3D-printed model, as evidenced by a neurosurgical planning case study of a 29-year-old female patient with a low-grade frontal-lobe glioma. We herein report the rapid prototyping methodology utilized in conjunction with surgical navigation to prepare and plan a complex neurosurgery. The method introduced here combines CT and MRI images with DTI tractography, while using various image segmentation protocols to 3D model the skull base, tumor, and five eloquent fiber tracts...
2017: Journal of Healthcare Engineering
https://www.readbyqxmd.com/read/29053676/laminotomy-for-lumbar-dorsal-root-ganglion-access-and-injection-in-swine
#11
Mark D Unger, Timothy P Maus, Ross C Puffer, Laura K Newman, Bradford L Currier, Andreas S Beutler
Dorsal root ganglia (DRG) are anatomically well defined structures that contain all primary sensory neurons below the head. This fact makes DRG attractive targets for injection of novel therapeutics aimed at treating chronic pain. In small animal models, laminectomy has been used to facilitate DRG injection because it involves surgical removal of the vertebral bone surrounding each DRG. We demonstrate a technique for intraganglionic injection of lumbar DRG in a large animal species, namely, swine. Laminotomy is performed to allow direct access to DRG using standard neurosurgical techniques, instruments, and materials...
October 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29053638/neuroprotective-surgical-strategies-in-parkinson-s-disease-role-of-preclinical-data
#12
REVIEW
Napoleon Torres, Jenny Molet, Cecile Moro, John Mitrofanis, Alim Louis Benabid
Although there have been many pharmacological agents considered to be neuroprotective therapy in Parkinson's disease (PD) patients, neurosurgical approaches aimed to neuroprotect or restore the degenerative nigrostriatal system have rarely been the focus of in depth reviews. Here, we explore the neuroprotective strategies involving invasive surgical approaches (NSI) using neurotoxic models 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) and 6-hydroxydopamine (6-OHDA), which have led to clinical trials. We focus on several NSI approaches, namely deep brain stimulation of the subthalamic nucleus, glial neurotrophic derived factor (GDNF) administration and cell grafting methods...
October 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28985669/establishment-of-next-generation-neurosurgery-research-and-training-laboratory-with-integrated-human-performance-monitoring
#13
Antonio Bernardo
Quality of neurosurgical care and patient outcomes are inextricably linked to surgical and technical proficiency and a thorough working knowledge of microsurgical anatomy. Neurosurgical laboratory-based cadaveric training is essential for the development and refinement of technical skills before their use on a living patient. Recent biotechnological advances including 3-dimensional (3D) microscopy and endoscopy, 3D printing, virtual reality, surgical simulation, surgical robotics, and advanced neuroimaging have proved to reduce the learning curve, improve conceptual understanding of complex anatomy, and enhance visuospatial skills in neurosurgical training...
October 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28985655/the-changing-face-of-technologically-integrated-neurosurgery-today-s-high-tech-operating-room
#14
Antonio Bernardo
Over the last decade, surgical technology in planning, mapping, optics, robotics, devices, and minimally invasive techniques has changed the face of modern neurosurgery. We explore the current advances in clinical technology across all neurosurgical subspecialties, examine how clinical practice is being shaped by this technology, and suggest what the operating room of tomorrow may look like.
October 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28973391/postoperative-epileptic-seizures-in-children-is-the-brain-incision-a-risk-factor
#15
Luca Massimi, Domenica Battaglia, Federico Bianchi, Simone Peraio, Elisabetta Peppucci, Concezio Di Rocco
BACKGROUND: Postoperative seizures (PSs) after neurosurgical operations are common but little is known about the role of surgical brain incision on their genesis. This topic has not been addressed so far. OBJECTIVE: To verify if the corticotomy affects the risk of PSs and postoperative epilepsy (PE) in children. METHODS: One hundred forty-three consecutive pediatric cases operated on for supratentorial lesions at the same institution in the last 15 yr have been retrospectively reviewed by dividing them into group A, 68 children who required brain corticotomy mainly for hemispheric tumors, and group B, 75 children treated through extracortical approaches mainly for suprasellar and optic tumors...
July 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28961936/the-surgical-white-matter-chassis-a-practical-3-dimensional-atlas-for-planning-subcortical-surgical-trajectories
#16
Jonathan E Jennings, Amin B Kassam, Melanie B Fukui, Alejandro Monroy-Sosa, Srikant Chakravarthi, Nathan Kojis, Richard A Rovin
BACKGROUND: The imperative role of white matter preservation in improving surgical functional outcomes is now recognized. Understanding the fundamental white matter framework is essential for translating the anatomic and functional literature into practical strategies for surgical planning and neuronavigation. OBJECTIVE: To present a 3-dimensional (3-D) atlas of the structural and functional scaffolding of human white matter-ie, a "Surgical White Matter Chassis (SWMC)"-that can be used as an organizational tool in designing precise and individualized trajectory-based neurosurgical corridors...
August 5, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28960172/resting-state-functional-magnetic-resonance-imaging-for-surgical-planning-in-pediatric-patients-a-preliminary-experience
#17
Jarod L Roland, Natalie Griffin, Carl D Hacker, Ananth K Vellimana, S Hassan Akbari, Joshua S Shimony, Matthew D Smyth, Eric C Leuthardt, David D Limbrick
OBJECTIVE Cerebral mapping for surgical planning and operative guidance is a challenging task in neurosurgery. Pediatric patients are often poor candidates for many modern mapping techniques because of inability to cooperate due to their immature age, cognitive deficits, or other factors. Resting-state functional MRI (rs-fMRI) is uniquely suited to benefit pediatric patients because it is inherently noninvasive and does not require task performance or significant cooperation. Recent advances in the field have made mapping cerebral networks possible on an individual basis for use in clinical decision making...
September 29, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28950246/towards-reporting-standards-for-neuropsychological-study-results-a-proposal-to-minimize-communication-errors-with-standardized-qualitative-descriptors-for-normalized-test-scores
#18
Mike R Schoenberg, Ruba S Rum
OBJECTIVE: Rapid, clear and efficient communication of neuropsychological results is essential to benefit patient care. Errors in communication are a lead cause of medical errors; nevertheless, there remains a lack of consistency in how neuropsychological scores are communicated. A major limitation in the communication of neuropsychological results is the inconsistent use of qualitative descriptors for standardized test scores and the use of vague terminology. PATIENTS AND METHODS: PubMed search from 1 Jan 2007 to 1 Aug 2016 to identify guidelines or consensus statements for the description and reporting of qualitative terms to communicate neuropsychological test scores was conducted...
November 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28945910/natural-and-artificial-intelligence-in-neurosurgery-a-systematic-review
#19
Joeky T Senders, Omar Arnaout, Aditya V Karhade, Hormuzdiyar H Dasenbrock, William B Gormley, Marike L Broekman, Timothy R Smith
BACKGROUND: Machine learning (ML) is a domain of artificial intelligence that allows computer algorithms to learn from experience without being explicitly programmed. OBJECTIVE: To summarize neurosurgical applications of ML where it has been compared to clinical expertise, here referred to as "natural intelligence." METHODS: A systematic search was performed in the PubMed and Embase databases as of August 2016 to review all studies comparing the performance of various ML approaches with that of clinical experts in neurosurgical literature...
September 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28945289/anomalies-and-normal-variants-of-the-cerebral-arterial-supply-a-comprehensive-pictorial-review-with-a-proposed-workflow-for-classification-and-significance
#20
REVIEW
Arsany Hakim, Jan Gralla, Christoph Rozeik, Pasquale Mordasini, Lars Leidolt, Eike Piechowiak, Christoph Ozdoba, Marwan El-Koussy
Cerebral arteries may exhibit a wide range of variation from normal anatomy, which can be incidentally discovered during imaging. Knowledge of such variants is crucial to differentiate them from pathologies, to understand the etiology of certain pathologies directly related to a vascular variant, and to depict the changes in collateral circulation in patients with certain variants. Detection of particular variants may lead to the discovery of other nonvascular or vascular anomalies, especially aneurysms, and may also affect planning of endovascular or neurosurgical interventions...
September 25, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
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