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https://www.readbyqxmd.com/read/28269442/development-of-a-finger-like-mechanism-of-end-effector-for-micro-surgery
#1
S M Kim, C M Park, J H Yoo, K Kim
Neurosurgery had been considered nearly impossible due to its technical difficulty and the danger to its special target organ, but with endoscopic methods, many such surgeries can be made safely through the nose. Endoscopic neurosurgery is limited by available instruments, however, and there remain some areas of the human body inaccessible to standard surgical tools. To overcome some of these limitations, in this study we developed a simple mechanism that could form a high curvature in a narrow space. The end product is a finger-like mechanism consisting of five body parts and four joints...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227688/development-of-a-finger-like-mechanism-of-end-effector-for-micro-surgery
#2
S M Kim, C M Park, J H Yoo, K Kim, S M Kim, C M Park, J H Yoo, K Kim, J H Yoo, K Kim, C M Park, S M Kim
Neurosurgery had been considered nearly impossible due to its technical difficulty and the danger to its special target organ, but with endoscopic methods, many such surgeries can be made safely through the nose. Endoscopic neurosurgery is limited by available instruments, however, and there remain some areas of the human body inaccessible to standard surgical tools. To overcome some of these limitations, in this study we developed a simple mechanism that could form a high curvature in a narrow space. The end product is a finger-like mechanism consisting of five body parts and four joints...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28175541/335%C3%A2-a-modular-multimodality-integrative-pipeline-for-neurosurgery-simulation-and-visualization
#3
Anthony Beardsworth Costa, Joshua B Bederson
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28169225/intensity-based-2d-3d-registration-for-lead-localization-in-robot-guided-deep-brain-stimulation
#4
Stefan Hunsche, Dieter Sauner, Faycal El Majdoub, Clemens Neudorfer, Jörg Poggenborg, Axel Goßmann, Mohammad Maarouf
Intraoperative assessment of lead localization has become a standard procedure during deep brain stimulation surgery in many centers, allowing immediate verification of targeting accuracy and, if necessary, adjustment of the trajectory. The most suitable imaging modality to determine lead positioning, however, remains controversially discussed. Current approaches entail the implementation of computed tomography and magnetic resonance imaging. In the present study, we adopted the technique of intensity-based 2D 3D registration that is commonly employed in stereotactic radiotherapy and spinal surgery...
March 21, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28047334/su-f-j-02-flexible-training-of-mr-guided-laser-ablation-models-via-global-optimization
#5
S J Fahrenholtz, R J Stafford, R Madankan, J D Hazle, D Fuentes
PURPOSE: MR-guided laser ablation is currying interest in neurosurgery as a minimally invasive procedure. The procedure is planned via an assumed lesion overlaid on various anatomic and functional images. Computational models of heat transfer may further inform planning the intervention, reducing surgical morbidity and ensuring therapeutic effect. These models require physical parameter data, via less relevant literature values. Using commercialized laser ablation equipment combined with MR temperature imaging (MRTI) feedback, recent work has demonstrated the use of inverse problems as a means to gain the necessary information via retrospective analysis...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27981065/art-3-5d-an-algorithm-to-label-arteries-and-veins-from-three-dimensional-angiography
#6
Beatrice Barra, Elena De Momi, Giancarlo Ferrigno, Guglielmo Pero, Francesco Cardinale, Giuseppe Baselli
Preoperative three-dimensional (3-D) visualization of brain vasculature by digital subtraction angiography from computerized tomography (CT) in neurosurgery is gaining more and more importance, since vessels are the primary landmarks both for organs at risk and for navigation. Surgical embolization of cerebral aneurysms and arteriovenous malformations, epilepsy surgery, and stereoelectroencephalography are a few examples. Contrast-enhanced cone-beam computed tomography (CE-CBCT) represents a powerful facility, since it is capable of acquiring images in the operation room, shortly before surgery...
October 2016: Journal of Medical Imaging
https://www.readbyqxmd.com/read/27943227/practical-aspects-in-neuroendoscopic-techniques-and-complication-avoidance-a-systematic-review
#7
Yad Ram Yadav, Jitin Bajaj, Vijay Parihar, Shailendra Ratre, Anurag Pateriya
Although endoscopic techniques have many advantages including improved visualizations and magnification., these are also associated with limitations. Objective of this study is to discuss practical aspects that can reduce complications after endoscopic procedures, and their management. Review is based on personal experience of more than 2000 neuroendoscopic procedures performed by the senior author. Topic search was made on PubMed using Neuroendoscopy, complications and neuroendoscopy, complication avoidance and neuroendoscopy, endoscopic neurosurgery, and minimally invasive neurosurgery...
November 11, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27920940/3d-printing-in-neurosurgery-a-systematic-review
#8
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
#9
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-comparison-study-between-traditional-microscopic-surgery-and-a-novel-robotic-optoelectronic-visualization-tool-for-spinal-surgery
#10
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 operating microscope (OM) 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 OM and exoscope. Three attending spine surgeons blinded for the visualization technique used then reviewed and graded each decompression...
February 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27817764/supplementary-educational-models-in-canadian-neurosurgery-residency-programs
#11
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...
March 2017: 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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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/27532036/presurgical-rehearsals-for-patients-considering-awake-deep-brain-stimulation
#18
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
#19
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...
December 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
#20
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
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