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https://www.readbyqxmd.com/read/28811078/mentoring-models-in-neurosurgical-training-review-of-literature
#1
REVIEW
Taiwo Akhigbe, Ardalan Zolnourian, Diederik Bulters
BACKGROUND: Effective mentoring is an invaluable element in the development of next generation of neurosurgeons. A mentor helps to develop professional core values, technical and non-technical skills, attitudes and disposition required to be qualified and competent neurosurgeon. Giving the invaluable significance of mentoring in neurosurgery, we undertook this literature review to identify mentoring models evaluating its success and relative benefit. METHODS: Literature search identified using MeSH word 'mentor', mentoring, mentorship, mentoring model, neurosurgery' in MEDLINE, EMBASE and Scopus databases from 1990 to 2016...
August 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28774433/a-high-resolution-model-for-soft-tissue-deformation-based-on-point-primitives
#2
Yanni Zou, Peter X Liu
BACKGROUND AND OBJECTIVES: In order to achieve a high degree of visual realism in surgery simulation, we propose a new model, which is based on point primitives and continuous elastic mechanics theory, for soft tissue deformation, tearing and/or cutting. METHODS: The model can be described as a two-step local high-resolution strategy. First, appropriate volumetric data are sampled and assigned with proper physical properties. Second, sparsely sampled points in non-deformed regions and densely-sampled points in the deformed zone are selected and evaluated...
September 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28765716/simulation-training-in-neurosurgery-advances-in-education-and-practice
#3
REVIEW
Sanjay Konakondla, Reginald Fong, Clemens M Schirmer
The current simulation technology used for neurosurgical training leaves much to be desired. Significant efforts are thoroughly exhausted in hopes of developing simulations that translate to give learners the "real-life" feel. Though a respectable goal, this may not be necessary as the application for simulation in neurosurgical training may be most useful in early learners. The ultimate uniformly agreeable endpoint of improved outcome and patient safety drives these investments. We explore the development, availability, educational taskforces, cost burdens and the simulation advancements in neurosurgical training...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28756040/viscoelastic-parameter-identification-of-human-brain-tissue
#4
S Budday, G Sommer, G A Holzapfel, P Steinmann, E Kuhl
Understanding the constitutive behavior of the human brain is critical to interpret the physical environment during neurodevelopment, neurosurgery, and neurodegeneration. A wide variety of constitutive models has been proposed to characterize the brain at different temporal and spatial scales. Yet, their model parameters are typically calibrated with a single loading mode and fail to predict the behavior under arbitrary loading conditions. Here we used a finite viscoelastic Ogden model with six material parameters-an elastic stiffness, two viscoelastic stiffnesses, a nonlinearity parameter, and two viscous time constants-to model the characteristic nonlinearity, conditioning, hysteresis and tension-compression asymmetry of the human brain...
July 11, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28754068/a-new-head-mounted-display-based-augmented-reality-system-in-neurosurgical-oncology-a-study-on-phantom
#5
Fabrizio Cutolo, Antonio Meola, Marina Carbone, Sara Sinceri, Federico Cagnazzo, Ennio Denaro, Nicola Esposito, Mauro Ferrari, Vincenzo Ferrari
PURPOSE: Benefits of minimally invasive neurosurgery mandate the development of ergonomic paradigms for neuronavigation. Augmented Reality (AR) systems can overcome the shortcomings of commercial neuronavigators. The aim of this work is to apply a novel AR system, based on a head-mounted stereoscopic video see-through display, as an aid in complex neurological lesion targeting. Effectiveness was investigated on a newly designed patient-specific head mannequin featuring an anatomically realistic brain phantom with embedded synthetically created tumors and eloquent areas...
December 2017: Computer Assisted Surgery (Abingdon, England)
https://www.readbyqxmd.com/read/28750949/a-machine-learning-approach-for-real-time-modelling-of-tissue-deformation-in-image-guided-neurosurgery
#6
Michele Tonutti, Gauthier Gras, Guang-Zhong Yang
OBJECTIVES: Accurate reconstruction and visualisation of soft tissue deformation in real time is crucial in image-guided surgery, particularly in augmented reality (AR) applications. Current deformation models are characterised by a trade-off between accuracy and computational speed. We propose an approach to derive a patient-specific deformation model for brain pathologies by combining the results of pre-computed finite element method (FEM) simulations with machine learning algorithms...
July 24, 2017: Artificial Intelligence in Medicine
https://www.readbyqxmd.com/read/28721533/minimum-norm-estimation-of-motor-representations-in-navigated-tms-mappings
#7
Minna Pitkänen, Elisa Kallioniemi, Petro Julkunen, Maria Nazarova, Jaakko O Nieminen, Risto J Ilmoniemi
Navigated transcranial magnetic stimulation (nTMS) can be applied to locate and outline cortical motor representations. This may be important, e.g., when planning neurosurgery or focused nTMS therapy, or when assessing plastic changes during neurorehabilitation. Conventionally, a cortical location is considered to belong to the motor cortex if the maximum electric field (E-field) targeted there evokes a motor-evoked potential in a muscle. However, the cortex is affected by a broad E-field distribution, which tends to broaden estimates of representation areas by stimulating also the neighboring areas in addition to the maximum E-field location...
July 18, 2017: Brain Topography
https://www.readbyqxmd.com/read/28666846/-3d-printing-in-neurosurgery-a-specific-model-for-patients-with-craniosynostosis
#8
Borja Jiménez Ormabera, Ricardo Díez Valle, Javier Zaratiegui Fernández, Marcos Llorente Ortega, Xabier Unamuno Iñurritegui, Sonia Tejada Solís
INTRODUCTION: Craniosynostosis is a rare condition and requires a personalised surgical approach, which is why we consider the use of 3D printed models beneficial in the surgical planning of this procedure. MATERIAL AND METHODS: Acrylonitrile butadiene styrene plastic skull models were designed and printed from CT images of patients between 3 and 6 months of age with craniosynostosis of different sutures. The models were used to simulate surgical procedures. RESULTS: Four models of four patients with craniosynostosis were produced: two with closure of the metopic suture and two with sagittal suture closure...
June 27, 2017: Neurocirugía
https://www.readbyqxmd.com/read/28651099/brain-shift-compensation-using-intraoperative-ultrasound-and-constraint-based-biomechanical-simulation
#9
Fanny Morin, Hadrien Courtecuisse, Ingerid Reinertsen, Florian Le Lann, Olivier Palombi, Yohan Payan, Matthieu Chabanas
PURPOSE: During brain tumor surgery, planning and guidance are based on preoperative images which do not account for brain-shift. However, this deformation is a major source of error in image-guided neurosurgery and affects the accuracy of the procedure. In this paper, we present a constraint-based biomechanical simulation method to compensate for craniotomy-induced brain-shift that integrates the deformations of the blood vessels and cortical surface, using a single intraoperative ultrasound acquisition...
June 15, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28637947/neurosurgical-virtual-reality-simulation-for-brain-tumor-using-high-definition-computer-graphics-a-review-of-the-literature
#10
Taichi Kin, Hirofumi Nakatomi, Naoyuki Shono, Seiji Nomura, Toki Saito, Hiroshi Oyama, Nobuhito Saito
Simulation and planning of surgery using a virtual reality model is becoming common with advances in computer technology. In this study, we conducted a literature search to find trends in virtual simulation of surgery for brain tumors. A MEDLINE search for "neurosurgery AND (simulation OR virtual reality)" retrieved a total of 1,298 articles published in the past 10 years. After eliminating studies designed solely for education and training purposes, 28 articles about the clinical application remained. The finding that the vast majority of the articles were about education and training rather than clinical applications suggests that several issues need be addressed for clinical application of surgical simulation...
June 22, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28600218/systematic-review-of-patient-specific-surgical-simulation-toward-advancing-medical-education-%C3%A2
#11
Won Hyung A Ryu, Navjit Dharampal, Ahmed E Mostafa, Ehud Sharlin, Gail Kopp, William Bradley Jacobs, Robin John Hurlbert, Sonny Chan, Garnette R Sutherland
OBJECTIVE: Simulation-based education has been shown to be an effective tool to teach foundational technical skills in various surgical specialties. However, most of the current simulations are limited to generic scenarios and do not allow continuation of the learning curve beyond basic technical skills to prepare for more advanced expertise, such as patient-specific surgical planning. The objective of this study was to evaluate the current medical literature with respect to the utilization and educational value of patient-specific simulations for surgical training...
June 6, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28599904/youtube-as-a-source-of-information-on-neurosurgery
#12
Nardin Samuel, Naif M Alotaibi, Andres M Lozano
BACKGROUND: The importance of videos in social media communications in the context of healthcare and neurosurgery is becoming increasingly recognized. However, to date, there has not yet been a systematic analysis of these neurosurgery-related communications. Accordingly, this study was aimed at characterizing the online video content pertaining to neurosurgery. METHODS: Neurosurgery-related videos uploaded on YouTube were collected using a comprehensive search strategy...
June 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28573545/a-software-framework-for-real-time-multi-modal-detection-of-microsleeps
#13
Simon J Knopp, Philip J Bones, Stephen J Weddell, Richard D Jones
A software framework is described which was designed to process EEG, video of one eye, and head movement in real time, towards achieving early detection of microsleeps for prevention of fatal accidents, particularly in transport sectors. The framework is based around a pipeline structure with user-replaceable signal processing modules. This structure can encapsulate a wide variety of feature extraction and classification techniques and can be applied to detecting a variety of aspects of cognitive state. Users of the framework can implement signal processing plugins in C++ or Python...
June 1, 2017: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/28524798/revisiting-the-rules-for-freehand-ventriculostomy-a-virtual-reality-analysis
#14
Clemens Raabe, Jens Fichtner, Jürgen Beck, Jan Gralla, Andreas Raabe
OBJECTIVE Frontal ventriculostomy is one of the most frequent and standardized procedures in neurosurgery. However, many first and subsequent punctures miss the target, and suboptimal placement or misplacement of the catheter is common. The authors therefore reexamined the landmarks and rules to determine the entry point and trajectory with the best hit rate (HtR). METHODS The authors randomly selected CT scans from their institution's DICOM pool that had been obtained in 50 patients with normal ventricular and skull anatomy and without ventricular puncture...
May 19, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28479787/indigenous-inexpensive-practice-models-for-skill-development-in-neuroendoscopy
#15
Jitin Bajaj, Yad Ram Yadav, Anurag Pateriya, Vijay Parihar, Shailendra Ratre, Amitesh Dubey
INTRODUCTION: Neurosurgery is a branch having a tough learning curve. Residents generally get very less hands-on exposure for advanced procedures like neuroendoscopy. With the limited number of cadavers available and ethical issues associated with animal models, practice models, and simulators are becoming the able alternative. Most of these simulators are very costly. We tried to build indigenous inexpensive practice models that can help in developing most of the skills of neuroendoscopy...
April 2017: Journal of Neurosciences in Rural Practice
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/28438070/creation-of-a-novel-simulator-for-minimally-invasive-neurosurgery-fusion-of-3d-printing-and-special-effects
#17
Peter Weinstock, Roberta Rehder, Sanjay P Prabhu, Peter W Forbes, Christopher J Roussin, Alan R Cohen
OBJECTIVE Recent advances in optics and miniaturization have enabled the development of a growing number of minimally invasive procedures, yet innovative training methods for the use of these techniques remain lacking. Conventional teaching models, including cadavers and physical trainers as well as virtual reality platforms, are often expensive and ineffective. Newly developed 3D printing technologies can recreate patient-specific anatomy, but the stiffness of the materials limits fidelity to real-life surgical situations...
July 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28389794/construct-and-face-validity-of-the-educational-computer-based-environment-ece-assessment-scenarios-for-basic-endoneurosurgery-skills
#18
Nergiz Ercil Cagiltay, Erol Ozcelik, Gokhan Sengul, Mustafa Berker
BACKGROUND: In neurosurgery education, there is a paradigm shift from time-based training to criterion-based model for which competency and assessment becomes very critical. Even virtual reality simulators provide alternatives to improve education and assessment in neurosurgery programs and allow for several objective assessment measures, there are not many tools for assessing the overall performance of trainees. This study aims to develop and validate a tool for assessing the overall performance of participants in a simulation-based endoneurosurgery training environment...
April 7, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28343727/carbapenemase-producing-acinetobacter-baumannii-an-outbreak-report-with-special-highlights-on-economic-burden
#19
J Gagnaire, A Gagneux-Brunon, A Pouvaret, F Grattard, A Carricajo, H Favier, A Mattei, B Pozzetto, C Nuti, F Lucht, P Berthelot, E Botelho-Nevers
OBJECTIVE: We aimed to describe the management of a carbapenemase-producing Acinetobacter baumannii (CP-AB) outbreak using the Outbreak Reports and Intervention Studies of Nosocomial Infection (ORION) statement. We also aimed to evaluate the cost of the outbreak and simulate costs if a dedicated unit to manage such outbreak had been set-up. METHODS: We performed a prospective epidemiological study. Multiple interventions were implemented including cohorting measures and limitation of admissions...
March 23, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28341408/the-effect-of-3-dimensional-simulation-on-neurosurgical-skill-acquisition-and-surgical-performance-a-review-of-the-literature
#20
Anna D Clark, Damiano G Barone, Nicholas Candy, Mathew Guilfoyle, Karol Budohoski, Riikka Hofmann, Thomas Santarius, Ramez Kirollos, Rikin A Trivedi
OBJECTIVE: In recent years, 3-dimensional (3D) simulation of neurosurgical procedures has become increasingly popular as an addition to training programmes. However, there remains little objective evidence of its effectiveness in improving live surgical skill. This review analysed the current literature in 3D neurosurgical simulation, highlighting remaining gaps in the evidence base for improvement in surgical performance and suggests useful future research directions. DESIGN: An electronic search of the databases was conducted to identify studies investigating 3D virtual reality (VR) simulation for various types of neurosurgery...
March 22, 2017: Journal of Surgical Education
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