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Neurosurgical Simulation

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https://www.readbyqxmd.com/read/28068291/particle-swarm-optimization-for-programming-deep-brain-stimulation-arrays
#1
Edgar Peña, Simeng Zhang, Steve Deyo, YiZi Xiao, Matthew D Johnson
OBJECTIVE: Deep brain stimulation (DBS) therapy relies on both precise neurosurgical targeting and systematic optimization of stimulation settings to achieve beneficial clinical outcomes. One recent advance to improve targeting is the development of DBS arrays (DBSAs) with electrodes segmented both along and around the DBS lead. However, increasing the number of independent electrodes creates the logistical challenge of optimizing stimulation parameters efficiently. APPROACH: Solving such complex problems with multiple solutions and objectives is well known to occur in biology, in which complex collective behaviors emerge out of swarms of individual organisms engaged in learning through social interactions...
February 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28011454/predicting-neurosurgical-outcomes-in-focal-epilepsy-patients-using-computational-modelling
#2
Nishant Sinha, Justin Dauwels, Marcus Kaiser, Sydney S Cash, M Brandon Westover, Yujiang Wang, Peter N Taylor
SEE EISSA AND SCHEVON DOI101093/AWW332 FOR A SCIENTIFIC COMMENTARY ON THIS ARTICLE: Surgery can be a last resort for patients with intractable, medically refractory epilepsy. For many of these patients, however, there is substantial risk that the surgery will be ineffective. The prediction of who is likely to benefit from a surgical approach is crucial for being able to inform patients better, conduct principled prospective clinical trials, and ultimately tailor therapeutic approaches to these patients more effectively...
February 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/27941480/the-role-of-simulation-in-planning-intraoperative-magnetic-resonance-imaging-guided-neurosurgical-procedures
#3
Tumul Chowdhury, Sergio D Bergese, Suren Soghomonyan, Ronald B Cappellani
Simulation of the actual procedure is a simple and yet effective method of increasing patient safety and reducing the rate of unexpected adverse effects. We present our experience with 2 cases of preprocedural simulation on healthy volunteers that were performed in the intraoperative magnetic resonance imaging suite. During one of the cases, we also simulated a scenario of sudden cardiac arrest. Such an approach helped us to refine the procedures and coordinate the work of different teams within the intraoperative magnetic resonance imaging suite as well as improve the quality of patient management...
December 9, 2016: A & A Case Reports
https://www.readbyqxmd.com/read/27930664/reliable-analysis-of-single-unit-recordings-from-the-human-brain-under-noisy-conditions-tracking-neurons-over-hours
#4
Johannes Niediek, Jan Boström, Christian E Elger, Florian Mormann
Recording extracellulary from neurons in the brains of animals in vivo is among the most established experimental techniques in neuroscience, and has recently become feasible in humans. Many interesting scientific questions can be addressed only when extracellular recordings last several hours, and when individual neurons are tracked throughout the entire recording. Such questions regard, for example, neuronal mechanisms of learning and memory consolidation, and the generation of epileptic seizures. Several difficulties have so far limited the use of extracellular multi-hour recordings in neuroscience: Datasets become huge, and data are necessarily noisy in clinical recording environments...
2016: PloS One
https://www.readbyqxmd.com/read/27920940/3d-printing-in-neurosurgery-a-systematic-review
#5
REVIEW
Michael Randazzo, Jared M Pisapia, Nickpreet Singh, Jayesh P Thawani
BACKGROUND: The recent expansion of three-dimensional (3D) printing technology into the field of neurosurgery has prompted a widespread investigation of its utility. In this article, we review the current body of literature describing rapid prototyping techniques with applications to the practice of neurosurgery. METHODS: An extensive and systematic search of the Compendex, Scopus, and PubMed medical databases was conducted using keywords relating to 3D printing and neurosurgery...
2016: Surgical Neurology International
https://www.readbyqxmd.com/read/27817764/supplementary-educational-models-in-canadian-neurosurgery-residency-programs
#6
Won Hyung A Ryu, Sonny Chan, Garnette R Sutherland
BACKGROUND: The proposed implementation of work hour restrictions has presented a significant challenge of maintaining the quality of resident education and ensuring adequate hands-on experience that is essential for novice surgeons. To maintain the level of resident surgical competency, revision of the apprentice model of surgical education to include supplementary educational methods, such as laboratory and virtual reality (VR) simulations, have become frequent topics of discussion...
November 7, 2016: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/27689458/the-force-pyramid-a-spatial-analysis-of-force-application-during-virtual-reality-brain-tumor-resection
#7
Hamed Azarnoush, Samaneh Siar, Robin Sawaya, Gmaan Al Zhrani, Alexander Winkler-Schwartz, Fahad Eid Alotaibi, Abdulgadir Bugdadi, Khalid Bajunaid, Ibrahim Marwa, Abdulrahman Jafar Sabbagh, Rolando F Del Maestro
OBJECTIVE Virtual reality simulators allow development of novel methods to analyze neurosurgical performance. The concept of a force pyramid is introduced as a Tier 3 metric with the ability to provide visual and spatial analysis of 3D force application by any instrument used during simulated tumor resection. This study was designed to answer 3 questions: 1) Do study groups have distinct force pyramids? 2) Do handedness and ergonomics influence force pyramid structure? 3) Are force pyramids dependent on the visual and haptic characteristics of simulated tumors? METHODS Using a virtual reality simulator, NeuroVR (formerly NeuroTouch), ultrasonic aspirator force application was continually assessed during resection of simulated brain tumors by neurosurgeons, residents, and medical students...
September 30, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27683680/rural-neurosurgical-and-spinal-laboratory-setup
#8
Adam Smith, Filippo Gagliardi, Nicholas Robert Pelzer, Jacob Hampton, Anthony Minh Tien Chau, Fiona Stewart, Pietro Mortini, Cristian Gragnaniello
BACKGROUND: Increasing focus has been placed on the use of simulation in neurosurgical and spinal surgical training worldwide, with the establishment of many surgical laboratories dedicated to such purpose. So far, the opportunities for hands-on cadaveric training in the areas of neurosurgery and spine surgery remain limited in Australia, owing to various factors, including the abolition of dissection in many medical schools, high maintenance requirements and widespread geographical distribution of surgical trainees...
December 2015: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27613497/coconut-model-for-learning-first-steps-of-craniotomy-techniques-and-csf-leak-avoidance
#9
Bernardo Drummond Braga, Sebastião Berquó Peleja, Guaracy Macedo, Carlos Roberto S A Drummond, Pollyana H V Costa, Marco T Garcia-Zapata, Marcelo Magaldi Oliveira
INTRODUCTION: Neurosurgery simulation has gained attention recently due to changes in the medical system. First-year neurosurgical residents in low-income countries usually perform their first craniotomy on a real subject. Development of high-fidelity, cheap, and largely available simulators is a challenge in residency training. An original model for the first steps of craniotomy with cerebrospinal fluid (CSF) leak avoidance practice using a coconut is described. MATERIAL AND METHODS: The coconut is a drupe from Cocos nucifera L...
September 6, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27601027/simulation-in-neurosurgical-training-a-blueprint-and-national-approach-to-implementation-for-initial-years-trainees
#10
Lihan Zhang, Ian Kamaly, Pramod Luthra, Peter Whitfield
Simulation has played an increasing role in surgical training in recent years, this follows from various reports such as the Chief Medical Officer annual report and Sir John Temple's 'Time for Training' and also from other factors such as increasing focus on efficiency and transparency within the healthcare system. Evidence has shown that simulation can develop and improve technical, clinical, communication and management skills. With technological advances, the quality of simulation has also improved with more realistic models and environment...
October 2016: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/27572392/population-pharmacokinetics-and-dosing-regimen-optimization-of-meropenem-in-cerebrospinal-fluid-and-plasma-in-patients-with-meningitis-after-neurosurgery
#11
Cheng Lu, Yuyi Zhang, Mingyu Chen, Ping Zhong, Yuancheng Chen, Jicheng Yu, Xiaojie Wu, Jufang Wu, Jing Zhang
Meropenem is used to manage postneurosurgical meningitis, but its population pharmacokinetics (PPK) in plasma and cerebrospinal fluid (CSF) in this patient group are not well-known. Our aims were to (i) characterize meropenem PPK in plasma and CSF and (ii) recommend favorable dosing regimens in postneurosurgical meningitis patients. Eighty-two patients were enrolled to receive meropenem infusions of 2 g every 8 h (q8h), 1 g q8h, or 1 g q6h for at least 3 days. Serial blood and CSF samples were collected, and concentrations were determined and analyzed via population modeling...
November 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27399533/335%C3%A2-a-modular-multimodality-integrative-pipeline-for-neurosurgery-simulation-and-visualization
#12
Anthony Beardsworth Costa, Joshua B Bederson
INTRODUCTION: The practice of pre- and intraoperative interactive visualization and modeling continues to grow as its value to clinical practice is augmented by new technologies, such as virtual and augmented reality, or 3D printing. Current tools that extract the necessary structural information from medical imaging modalities and allow virtual or other interrogation of the data are either difficult to use in a practical clinical setting, or sufficiently simple as to limit the knowledge available to the operator...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27395397/bimanual-psychomotor-performance-in-neurosurgical-resident-applicants-assessed-using-neurotouch-a-virtual-reality-simulator
#13
Alexander Winkler-Schwartz, Khalid Bajunaid, Muhammad A S Mullah, Ibrahim Marwa, Fahad E Alotaibi, Jawad Fares, Marta Baggiani, Hamed Azarnoush, Gmaan Al Zharni, Sommer Christie, Abdulrahman J Sabbagh, Penny Werthner, Rolando F Del Maestro
OBJECTIVE: Current selection methods for neurosurgical residents fail to include objective measurements of bimanual psychomotor performance. Advancements in computer-based simulation provide opportunities to assess cognitive and psychomotor skills in surgically naive populations during complex simulated neurosurgical tasks in risk-free environments. This pilot study was designed to answer 3 questions: (1) What are the differences in bimanual psychomotor performance among neurosurgical residency applicants using NeuroTouch? (2) Are there exceptionally skilled medical students in the applicant cohort? and (3) Is there an influence of previous surgical exposure on surgical performance? DESIGN: Participants were instructed to remove 3 simulated brain tumors with identical visual appearance, stiffness, and random bleeding points...
November 2016: Journal of Surgical Education
https://www.readbyqxmd.com/read/27331235/-new-simulation-technologies-in-neurosurgery
#14
REVIEW
V A Byvaltsev, E G Belykh, N A Konovalov
The article presents a literature review on the current state of simulation technologies in neurosurgery, a brief description of the basic technology and the classification of simulation models, and examples of simulation models and skills simulators used in neurosurgery. Basic models for the development of physical skills, the spectrum of available computer virtual simulators, and their main characteristics are described. It would be instructive to include microneurosurgical training and a cadaver course of neurosurgical approaches in neurosurgery training programs and to extend the use of three-dimensional imaging...
2016: Zhurnal Voprosy Neĭrokhirurgii Imeni N. N. Burdenko
https://www.readbyqxmd.com/read/27295648/estimation-of-penetrated-bone-layers-during-craniotomy-via-bioimpedance-measurement
#15
Daniel Teichmann, Lucas Rohe, Annegret Niesche, Meiko Mueller, Klaus Radermacher, Steffen Leonhardt
: Craniotomy is the removal of a bone flap from the skull and is a first step in many neurosurgical interventions. During craniotomy, an efficient cut of the bone without injuring adjoining soft tissues is very critical. The aim of this work is to investigate the feasibility of estimating the currently penetrated cranial bone layer by means of bioimpedance measurement. METHODS: A finite element model was developed and a simulation study conducted. Simulations were performed at different positions along an elliptical cutting path and at three different operation areas...
June 7, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27241118/simulator-and-2-tools-validation-of-performance-measures-from-a-novel-neurosurgery-simulation-model-using-the-current-standards-framework
#16
Deborah M Rooney, Bruce L Tai, Oren Sagher, Albert J Shih, David Andrew Wilkinson, Luis E Savastano
BACKGROUND: Ventriculostomy is a common neurosurgical procedure with a relatively steep learning curve. A low-cost, high-fidelity simulator paired with procedure-specific performance measures would provide a safe environment to teach ventriculostomy procedural skills. The same validated simulation model could also allow for assessment of trainees' proficiencies with measures that align with Accreditation Council for Graduate Medical Education milestones. This study extends previous work to evaluate validity evidence from the simulator, its newly developed performance assessment, the Ventricolostomy Procedural Assessment Tool, and the Objective Structured Assessment for Technical Skills...
September 2016: Surgery
https://www.readbyqxmd.com/read/27233494/simulation-based-training-for-burr-hole-surgery-instrument-recognition
#17
RANDOMIZED CONTROLLED TRIAL
David B Clarke, Nelofar Kureshi, Murray Hong, Maryam Sadeghi, Ryan C N D'Arcy
BACKGROUND: The use of simulation training in postgraduate medical education is an area of rapidly growing popularity and research. This study was designed to assess the impact of simulation training for instrument knowledge and recognition among neurosurgery residents. METHODS: This was a randomized control trial of first year residents from neurosurgery residency training programs across Canada. Eighteen neurosurgery trainees were recruited to test two simulation-based applications: PeriopSim™ Instrument Trainer and PeriopSim™ for Burr Hole Surgery...
May 27, 2016: BMC Medical Education
https://www.readbyqxmd.com/read/27147144/simulation-in-neurosurgery-past-present-and-future
#18
Ashish Suri, Devi Prasad Patra, Rajesh Kumar Meena
Neurosurgery is one of the most technically demanding medical professions that warrants a high level of expertise. In the present context of competitive medical practice, high societal expectations regarding quality of patient care and medicolegal and financial constraints, there are fewer opportunities for a trainee to achieve competency in standard neurosurgical, microsurgical, and operative techniques. Practice on simulation models like cadavers has been a trend since antiquity; however, recent development of newer models with their strategic modifications has given simulation education a new dimension...
May 2016: Neurology India
https://www.readbyqxmd.com/read/27081908/the-relative-efficacy-of-3-different-freehand-frontal-ventriculostomy-trajectories-a-prospective-neuronavigation-assisted-simulation-study
#19
Matthew A Kirkman, William Muirhead, Nick Sevdalis
OBJECTIVE Ventriculostomy is a relatively common neurosurgical procedure, often performed in the setting of acute hydrocephalus. Accurate positioning of the catheter is vital to minimize morbidity and mortality, and several anatomical landmarks are currently used. The aim of this study was to prospectively evaluate the relative performance of 3 recognized trajectories for frontal ventriculostomy using imaging-derived metrics: perpendicular to skull (PTS), contralateral medial canthus/external auditory meatus (CMC/EAM), and ipsilateral medial canthus/external auditory meatus (IMC/EAM)...
January 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27062917/a-novel-method-for-3-dimensional-printing-a-brain-that-feels-and-looks-like-one-the-next-step-in-the-search-of-the-perfect-neurosurgical-simulator
#20
Juan Del Castillo-Calcáneo, Jacob Alexander Donoghue
No abstract text is available yet for this article.
July 2016: World Neurosurgery
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