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https://www.readbyqxmd.com/read/27920940/3d-printing-in-neurosurgery-a-systematic-review
#1
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/27911234/ventriculostomy-associated-hemorrhage-a-risk-assessment-by-radiographic-simulation
#2
Faith C Robertson, Muhammad M Abd-El-Barr, Srinivasan Mukundan, William B Gormley
OBJECTIVE Ventriculostomy entry sites are commonly selected by freehand estimation of Kocher's point or approximations from skull landmarks and a trajectory toward the ipsilateral frontal horn of the lateral ventricles. A recognized ventriculostomy complication is intracranial hemorrhage from cortical vessel damage; reported rates range from 1% to 41%. In this report, the authors assess hemorrhagic risk by simulating traditional ventriculostomy trajectories and using CT angiography (CTA) with venography (CTV) data to identify potential complications, specifically from cortical draining veins...
December 2, 2016: Journal of Neurosurgery
https://www.readbyqxmd.com/read/27836702/advancement-of-surgical-visualization-methods-a-comparison-study-between-traditional-microscopic-surgery-and-a-novel-robotic-optoelectronic-visualization-tool-for-spinal-surgery
#3
Marc D Moisi, Kimberly Hoang, R Shane Tubbs, Jeni Page, Christian Fisahn, David Paulson, Shiveindra Jeyamohan, Johnny Delashaw, David Hanscom, Rod J Oskouian, Jens Chapman
INTRODUCTION: The operative microscope has become instrumental in aiding surgeons during key microdissection with greater safety and detail. An exoscope offers similar detail with improved functionality and greater implications for live-teaching and improved operating-room flow. METHODS: Eleven senior neurosurgery residents and fellows performed unilateral, single-level laminotomies on fresh cadavers using an operating microscope and exoscope. Three attending spine surgeons blinded for the visualization technique used then reviewed and graded each decompression...
November 8, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27817764/supplementary-educational-models-in-canadian-neurosurgery-residency-programs
#4
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/27733961/simulator-based-angiography-and-endovascular-neurosurgery-curriculum-a-longitudinal-evaluation-of-performance-following-simulator-based-angiography-training
#5
J Scott Pannell, David R Santiago-Dieppa, Arvin R Wali, Brian R Hirshman, Jeffrey A Steinberg, Vincent J Cheung, David Oveisi, Jon Hallstrom, Alexander A Khalessi
This study establishes performance metrics for angiography and neuroendovascular surgery procedures based on longitudinal improvement in individual trainees with differing levels of training and experience. Over the course of 30 days, five trainees performed 10 diagnostic angiograms, coiled 10 carotid terminus aneurysms in the setting of subarachnoid hemorrhage, and performed 10 left middle cerebral artery embolectomies on a Simbionix Angio Mentor™ simulator. All procedures were nonconsecutive. Total procedure time, fluoroscopy time, contrast dose, heart rate, blood pressures, medications administered, packing densities, the number of coils used, and the number of stent-retriever passes were recorded...
August 29, 2016: Curēus
https://www.readbyqxmd.com/read/27731390/in-vivo-near-infrared-virtual-intraoperative-surgical-photoacoustic-optical-coherence-tomography
#6
Donghyun Lee, Changho Lee, Sehui Kim, Qifa Zhou, Jeehyun Kim, Chulhong Kim
Since its first implementation in otolaryngological surgery nearly a century ago, the surgical microscope has improved the accuracy and the safety of microsurgeries. However, the microscope shows only a magnified surface view of the surgical region. To overcome this limitation, either optical coherence tomography (OCT) or photoacoustic microscopy (PAM) has been independently combined with conventional surgical microscope. Herein, we present a near-infrared virtual intraoperative photoacoustic optical coherence tomography (NIR-VISPAOCT) system that combines both PAM and OCT with a conventional surgical microscope...
October 12, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27715440/the-impact-of-several-craniotomies-on-transcranial-motor-evoked-potential-monitoring-during-neurosurgery
#7
Ryosuke Tomio, Takenori Akiyama, Masahiro Toda, Takayuki Ohira, Kazunari Yoshida
OBJECTIVE Transcranial motor evoked potential (tMEP) monitoring is popular in neurosurgery; however, the accuracy of tMEP can be impaired by craniotomy. Each craniotomy procedure and changes in the CSF levels affects the current spread. The aim of this study was to investigate the influence of several craniotomies on tMEP monitoring by using C3-4 transcranial electrical stimulation (TES). METHODS The authors used the finite element method to visualize the electric field in the brain, which was generated by TES, using realistic 3D head models developed from T1-weighted MR images...
October 7, 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/27572392/population-pharmacokinetics-and-dosing-regimen-optimization-of-meropenem-in-cerebrospinal-fluid-and-plasma-in-patients-with-meningitis-after-neurosurgery
#10
Cheng Lu, Yuyi Zhang, Mingyu Chen, Ping Zhong, Yuancheng Chen, Jicheng Yu, Xiaojie Wu, Jufang Wu, Jing Zhang
Meropenem is used to manage post-neurosurgical meningitis, but its population pharmacokinetics (PPK) in plasma and cerebrospinal fluid (CSF) in this patient group is not well known. Our aims were: (i) characterizing meropenem PPK in plasma and CSF; (ii) recommending favorable dosing regimens in post-neurosurgical meningitis patients. 82 patients were enrolled to receive 2g q8h, 1g q8h or 1g q6h meropenem infusion for at least 3 days. Serial blood and CSF samples were collected, with concentrations determined and analyzed via population modeling...
August 29, 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27532036/presurgical-rehearsals-for-patients-considering-awake-deep-brain-stimulation
#11
Ramsey A Falconer, Sean L Rogers, Cristie M Brewer, Franco Piscitani, Mahesh B Shenai
Simulated surgical environments are rapidly gaining adoption in training students, residents, and members of specialized surgical teams. However, minimal attention has been given to the use of simulated surgical environments to educate patients on surgical processes, particularly procedures that require the active participation of the patient. "Awake" neurosurgery provides a unique situation in which patients openly participate in their operation. We describe a case report, in which a 62-year-old male was referred for "awake" deep brain stimulation implantation, in relation to medically refractory Parkinson's disease...
2016: Frontiers in Surgery
https://www.readbyqxmd.com/read/27473019/resident-simulation-training-in-endoscopic-endonasal-surgery-utilizing-haptic-feedback-technology
#12
Jayesh P Thawani, Ashwin G Ramayya, Kalil G Abdullah, Eric Hudgins, Kerry Vaughan, Matthew Piazza, Peter J Madsen, Vivek Buch, M Sean Grady
Simulated practice may improve resident performance in endoscopic endonasal surgery. Using the NeuroTouch haptic simulation platform, we evaluated resident performance and assessed the effect of simulation training on performance in the operating room. First- (N=3) and second- (N=3) year residents were assessed using six measures of proficiency. Using a visual analog scale, the senior author scored subjects. After the first session, subjects with lower scores were provided with simulation training. A second simulation served as a task-learning control...
July 26, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/27413477/deep-brain-stimulation-versus-motor-cortex-stimulation-for-neuropathic-pain-a-minireview-of-the-literature-and-proposal-for-future-research
#13
REVIEW
C Michael Honey, Volker M Tronnier, Christopher R Honey
The treatment of neuropathic pain remains a public health concern. A growing cohort of patients is plagued by medically refractory, unrelenting severe neuropathic pain that ruins their quality of life and productivity. For this group, neurosurgery can offer two different kinds of neuromodulation that may help: deep brain simulation (DBS) and motor cortex stimulation (MCS). Unfortunately, there is no consensus on how to perform these procedures, which stimulation parameters to select, how to measure success, and which patients may benefit...
2016: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/27399533/335%C3%A2-a-modular-multimodality-integrative-pipeline-for-neurosurgery-simulation-and-visualization
#14
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/27387301/in-vivo-investigation-of-the-effectiveness-of-a-hyper-viscoelastic-model-in-simulating-brain-retraction
#15
Ping Li, Weiwei Wang, Chenxi Zhang, Yong An, Zhijian Song
Intraoperative brain retraction leads to a misalignment between the intraoperative positions of the brain structures and their previous positions, as determined from preoperative images. In vitro swine brain sample uniaxial tests showed that the mechanical response of brain tissue to compression and extension could be described by the hyper-viscoelasticity theory. The brain retraction caused by the mechanical process is a combination of brain tissue compression and extension. In this paper, we first constructed a hyper-viscoelastic framework based on the extended finite element method (XFEM) to simulate intraoperative brain retraction...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27331235/-new-simulation-technologies-in-neurosurgery
#16
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
#17
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/27285896/reconstruction-of-frontal-bone-with-custom-made-prosthesis-using-rapid-prototyping
#18
Vinícius Gabriel Barros Florentino, Diego Santiago de Mendonça, Ariel Valente Bezerra, Leonardo de Freitas Silva, Rafael Figueirêdo Pontes, Carlos Vinícius Mota de Melo, Manoel de Jesus Rodrigues Mello, Andréa Silvia Walter de Aguiar
Frontal bone fracture treatment is still an issue of research in craniofacial surgery and neurosurgery. The aims of the treatment are to reduce the complication risks and to keep the aesthetic of the face. Before the management of this fracture type, it is necessary to consider the permanence or not of the frontal sinus function. Rapid prototyping has been an aid tool on planning and simulation of the surgical procedure, improving the diagnostic quality and the implant manufacture, beyond reducing the operative time...
June 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27261943/simulation-in-craniomaxillofacial-training
#19
Daniel J Meara, Susan Coffey Zern
PURPOSE OF REVIEW: Simulation in healthcare is no longer a novel idea. Simulation continues to rapidly permeate and transform both clinical practice and medical education. Craniomaxillofacial surgery is comprised of multiple surgical disciplines, including neurosurgery, plastic surgery, otolaryngology, ophthalmology, and oral and maxillofacial surgery. All of these specialties are performing surgery in an era of evolving technology, cost containment, reduced resident work hours, and a focus on patient safety...
August 2016: Current Opinion in Otolaryngology & Head and Neck Surgery
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
#20
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
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