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https://www.readbyqxmd.com/read/29901628/3d-printing-of-intracranial-aneurysm-based-on-intracranial-digital-subtraction-angiography-and-its-clinical-application
#1
Jian-Li Wang, Zi-Gang Yuan, Guo-Liang Qian, Wu-Qiao Bao, Guo-Liang Jin
The study aimed to develop simulation models including intracranial aneurysmal and parent vessel geometries, as well as vascular branches, through 3D printing technology. The simulation models focused on the benefits of aneurysmal treatments and clinical education. This prospective study included 13 consecutive patients who suffered from intracranial aneurysms confirmed by digital subtraction angiography (DSA) in the Neurosurgery Department of Shaoxing People's Hospital. The original 3D-DSA image data were extracted through the picture archiving and communication system and imported into Mimics...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29898460/development-of-a-standardized-cranial-phantom-for-training-and-optimization-of-functional-stereotactic-operations
#2
Marie T Krüger, Volker A Coenen, Karl Egger, Mukesch Shah, Peter C Reinacher
BACKGROUND: In recent years, simulations based on phantom models have become increasingly popular in the medical field. In the field of functional and stereotactic neurosurgery, a cranial phantom would be useful to train operative techniques, such as stereo-electroencephalography (SEEG), to establish new methods as well as to develop and modify radiological techniques. In this study, we describe the construction of a cranial phantom and show examples for it in stereotactic and functional neurosurgery and its applicability with different radiological modalities...
June 13, 2018: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/29873765/development-and-implementation-of-an-inexpensive-easily-producible-time-efficient-external-ventricular-drain-simulator-using-3-dimensional-printing-and-image-registration
#3
Hansen Bow, Le He, Muhammad Aanish Raees, Sumit Pruthi, Rohan Chitale
BACKGROUND: External ventricular drain (EVD) placement is one of the most commonly performed procedures in neurosurgery, frequently by the junior neurosurgery resident. Simulators for EVD placement are often costly, time-intensive to create, and complicated to set up. OBJECTIVE: To describe creation of a simulator that is inexpensive, time-efficient, and simple to set up. METHODS: This simulator involves printing a hollow head using a desktop 3-dimensional (3D) printer...
June 5, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29796313/microvascular-anastomosis-training-in-neurosurgery-a-review
#4
REVIEW
Vadim A Byvaltsev, Serik K Akshulakov, Roman A Polkin, Sergey V Ochkal, Ivan A Stepanov, Yerbol T Makhambetov, Talgat T Kerimbayev, Michael Staren, Evgenii Belykh, Mark C Preul
Cerebrovascular diseases are among the most widespread diseases in the world, which largely determine the structure of morbidity and mortality rates. Microvascular anastomosis techniques are important for revascularization surgeries on brachiocephalic and carotid arteries and complex cerebral aneurysms and even during resection of brain tumors that obstruct major cerebral arteries. Training in microvascular surgery became even more difficult with less case exposure and growth of the use of endovascular techniques...
2018: Minimally Invasive Surgery
https://www.readbyqxmd.com/read/29782617/patient-specific-neurosurgical-phantom-assessment-of-visual-quality-accuracy-and-scaling-effects
#5
Felipe Wilker Grillo, Victor Hugo Souza, Renan Hiroshi Matsuda, Carlo Rondinoni, Theo Zeferino Pavan, Oswaldo Baffa, Helio Rubens Machado, Antonio Adilton Oliveira Carneiro
Background: Training in medical education depends on the availability of standardized materials that can reliably mimic the human anatomy and physiology. One alternative to using cadavers or animal bodies is to employ phantoms or mimicking devices. Styrene-ethylene/butylene-styrene (SEBS) gels are biologically inert and present tunable properties, including mechanical properties that resemble the soft tissue. Therefore, SEBS is an alternative to develop a patient-specific phantom, that provides real visual and morphological experience during simulation-based neurosurgical training...
2018: 3D printing in medicine
https://www.readbyqxmd.com/read/29765445/augmented-reality-in-neurosurgery
#6
Raniel Tagaytayan, Arpad Kelemen, Cecilia Sik-Lanyi
Neurosurgery is a medical specialty that relies heavily on imaging. The use of computed tomography and magnetic resonance images during preoperative planning and intraoperative surgical navigation is vital to the success of the surgery and positive patient outcome. Augmented reality application in neurosurgery has the potential to revolutionize and change the way neurosurgeons plan and perform surgical procedures in the future. Augmented reality technology is currently commercially available for neurosurgery for simulation and training...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29729462/interdisciplinary-prevention-and-management-of-wound-related-complications-in-extracranial-to-intracranial-bypass-surgery
#7
Rintaro Yokoyama, Takeshi Mikami, Ryo Ukai, Katsuya Komatsu, Yusuke Kimura, Hime Suzuki, Toshimi Honma, Toru Hirano, Tamotsu Saito, Ken Yamashita, Takatoshi Yotsuyanagi, Kiyohiro Houkin, Nobuhiro Mikuni
Extracranial-to-intracranial (EC-IC) bypass surgery may be necessary in patients with moyamoya disease and other ischemic conditions. However, there is a potential risk of wound-related complications in some cases. In this study, we report our approach to prevention of wound-related complications in EC-IC bypass, and technical consideration and pitfalls of surgery are discussed. This study included 89 patients with ischemic-onset moyamoya disease and atherosclerotic disease, who underwent 108 superficial temporal artery (STA)-to-middle cerebral artery bypass procedures...
May 2, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29595352/the-inhibitory-effect-of-functional-lesions-on-eloquent-brain-areas-from-research-bench-to-operating-bed
#8
Mojtaba Rismanchi
OBJECTIVES: Functioning, but injured cerebral connections are hypothesized to inhibit cortical plasticity. Study of neural networks can validate this hypothesis, and provide further practical clues for clinical and surgical options to restore function in eloquent brain areas. MATERIAL AND METHODS: Cortical lesions in eloquent areas were simulated by means of artificial neural networks. Next, functional restoration of these networks after lesional bypass was studied...
April 23, 2018: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29554379/effectiveness-of-the-thoracic-pedicle-screw-placement-using-the-virtual-surgical-training-system-a-cadaver-study
#9
Yang Hou, Yanping Lin, Jiangang Shi, Huajiang Chen, Wen Yuan
BACKGROUND: The virtual simulation surgery has initially exhibited its promising potentials in neurosurgery training. OBJECTIVE: To evaluate effectiveness of the Virtual Surgical Training System (VSTS) on novice residents placing thoracic pedicle screws in a cadaver study. METHODS: A total of 10 inexperienced residents participated in this study and were randomly assigned to 2 groups. The group using VSTS to learn thoracic pedicle screw fixation was the simulation training (ST) group and the group receiving an introductory teaching session was the control group...
March 14, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29479103/robotics-in-neurosurgery-a-literature-review
#10
Syed Ijlal Ahmed, Gohar Javed, Bakhtawar Mubeen, Syeda Beenish Bareeqa, Hiba Rasheed, Alizay Rehman, Masroor Mubeen Phulpoto, Syeda Sana Samar, Kashif Aziz
Robotic surgery has been the forte of minimally invasive stereo-tactic procedures for some decades now. Ongoing advancements and evolutionary developments require substantial evidence to build the consensus about its efficacy in the field of neurosurgery. Main obstacle in obtaining successful results in neurosurgery is fine neural structures and other anatomical limitations. Currently, human rationalisation and robotic precision works in symbiosis to provide improved results. We reviewed the current data about recent interventions...
February 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/29415505/in-vivo-evaluation-of-cerebral-hemodynamics-and-tissue-morphology-in-rats-during-changing-fraction-of-inspired-oxygen-based-on-spectrocolorimetric-imaging-technique
#11
Afrina Mustari, Takuya Kanie, Satoko Kawauchi, Shunichi Sato, Manabu Sato, Yasuaki Kokubo, Izumi Nishidate
During surgical treatment for cerebrovascular diseases, cortical hemodynamics are often controlled by bypass graft surgery, temporary occlusion of arteries, and surgical removal of veins. Since the brain is vulnerable to hypoxemia and ischemia, interruption of cerebral blood flow reduces the oxygen supply to tissues and induces irreversible damage to cells and tissues. Monitoring of cerebral hemodynamics and alteration of cellular structure during neurosurgery is thus crucial. Sequential recordings of red-green-blue (RGB) images of in vivo exposed rat brains were made during hyperoxia, normoxia, hypoxia, and anoxia...
February 6, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29325962/systematic-review-of-factors-influencing-surgical-performance-practical-recommendations-for-microsurgical-procedures-in-neurosurgery
#12
Evgenii Belykh, Naomi R Onaka, Irakliy T Abramov, Kaan Yağmurlu, Vadim A Byvaltsev, Robert F Spetzler, Peter Nakaj, Mark C Preul
BACKGROUND: Microneurosurgical techniques involve complex manual skills and hand-eye coordination that require substantial training. Many factors affect microneurosurgical skills. The goal of this study was to use a systematic evidence-based approach to analyze the quality of evidence for intrinsic and extrinsic factors that influence microneurosurgical performance and to make weighted practical recommendations. METHODS: A literature search of factors that may affect microsurgical performance was conducted using PubMed and Embase...
April 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29301059/objective-validation-of-perfusion-based-human-cadaveric-simulation-training-model-for-management-of-internal-carotid-artery-injury-in-endoscopic-endonasal-sinus-and-skull-base-surgery
#13
Jasper Shen, Kevin Hur, Zhipeng Zhang, Michael Minneti, Martin Pham, Bozena Wrobel, Gabriel Zada
BACKGROUND: The emergence of minimally invasive endoscopic endonasal skull base surgery has necessitated reproducible and realistic simulators of rare vascular injuries. OBJECTIVE: To assess the face and content validity of an innovative perfusion-based cadaveric model developed to simulate internal carotid artery (ICA) injury during endoscopic surgery. METHODS: Otolaryngology and neurosurgery trainees attempted 3 consecutive trials of endoscopic control of a parasellar ICA injury, with standardized technical feedback...
December 29, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29229134/animal-models-in-plastic-and-reconstructive-surgery-simulation-a-review
#14
REVIEW
Charles Yuen Yung Loh, Aline Yen Ling Wang, Vincent Tze Yang Tiong, Thanassi Athanassopoulos, Meiling Loh, Philip Lim, Huang-Kai Kao
BACKGROUND: The use of live and cadaveric animal models in surgical training is well established as a means of teaching and improving surgical skill in a controlled setting. We aim to review, evaluate, and summarize the models published in the literature that are applicable to Plastic Surgery training. MATERIALS AND METHODS: A PubMed search for keywords relating to animal models in Plastic Surgery and the associated procedures was conducted. Animal models that had cross over between specialties such as microsurgery with Neurosurgery and pinnaplasty with ear, nose, and throat surgery were included as they were deemed to be relevant to our training curriculum...
January 2018: Journal of Surgical Research
https://www.readbyqxmd.com/read/29219894/crisis-management-simulation-establishing-a-dual-neurosurgery-and-anesthesia-training-experience
#15
Jeremy Ciporen, Haley Gillham, Michele Noles, Dawn Dillman, Mark Baskerville, Caleb Haley, Donn Spight, Ryan C Turner, Brandon P Lucke-Wold
BACKGROUND: Simulation training has been shown to be an effective teaching tool. Learner management of an intraoperative crisis such as a major cerebrovascular bleed requires effective teamwork, communication, and implementation of key skill sets at appropriate time points. This study establishes a first of a kind simulation experience in a neurosurgery/anesthesia resident (learners) team working together to manage an intraoperative crisis. METHODS: Using a cadaveric cavernous carotid injury perfusion model, 7 neurosurgery and 6 anesthesia learners, were trained on appropriate vascular injury management using an endonasal endoscopic technique...
January 2018: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/29198889/virtual-reality-based-simulators-for-cranial-tumor-surgery-a-systematic-review
#16
REVIEW
Travis Mazur, Tarek R Mansour, Luke Mugge, Azedine Medhkour
BACKGROUND: Virtual reality (VR) simulators have become useful tools in various fields of medicine. Prominent uses of VR technologies include assessment of physician skills and presurgical planning. VR has shown effectiveness in multiple surgical specialties, yet its use in neurosurgery remains limited. OBJECTIVE: To examine all current literature on VR-based simulation for presurgical planning and training in cranial tumor surgeries and to assess the quality of these studies...
February 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29197347/sample-size-calculations-based-on-a-difference-in-medians-for-positively-skewed-outcomes-in-health-care-studies
#17
Aidan G O'Keeffe, Gareth Ambler, Julie A Barber
BACKGROUND: In healthcare research, outcomes with skewed probability distributions are common. Sample size calculations for such outcomes are typically based on estimates on a transformed scale (e.g. log) which may sometimes be difficult to obtain. In contrast, estimates of median and variance on the untransformed scale are generally easier to pre-specify. The aim of this paper is to describe how to calculate a sample size for a two group comparison of interest based on median and untransformed variance estimates for log-normal outcome data...
December 2, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/29119039/osirix-software-as-a-preoperative-planning-tool-in-cranial-neurosurgery-a-step-by-step-guide-for-neurosurgical-residents
#18
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/29106668/usim-a-new-device-and-app-for-case-specific-intraoperative-ultrasound-simulation-and-rehearsal-in-neurosurgery-a-preliminary-study
#19
Alessandro Perin, Francesco Ugo Prada, Michela Moraldo, Andrea Schiappacasse, Tommaso Francesco Galbiati, Enrico Gambatesa, Piergiorgio d'Orio, Nicole Irene Riker, Curzio Basso, Matteo Santoro, Torstein Ragnar Meling, Karl Schaller, Francesco DiMeco
BACKGROUND: Intraoperative ultrasound (iUS) is an excellent aid for neurosurgeons to perform better and safer operations thanks to real time, continuous, and high-quality intraoperative visualization. OBJECTIVE: To develop an innovative training method to teach how to perform iUS in neurosurgery. METHODS: Patients undergoing surgery for different brain or spine lesions were iUS scanned (before opening the dura) in order to arrange a collection of 3-dimensional, US images; this set of data was matched and paired to preoperatively acquired magnetic resonance images in order to create a library of neurosurgical cases to be studied offline for training and rehearsal purposes...
May 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29029228/development-of-a-whole-task-simulator-for-carotid-endarterectomy
#20
Gabrielle Santangelo, Doran Mix, Ahmed Ghazi, Michael Stoner, G Edward Vates, Jonathan J Stone
BACKGROUND: Surgical education relies on operative exposure with live patients. Carotid endarterectomy (CEA) demands an experienced surgeon with a very low complication rate. The high-risk nature of this procedure and the decline in number of CEAs performed annually has created a gap in residency training. OBJECTIVE: To develop a high-fidelity whole-task simulation for CEA that demonstrates content, construct, and face validity. METHODS: Anatomically accurate models of the human neck were created using multilayered poly-vinyl alcohol hydrogels...
June 1, 2018: Operative Neurosurgery (Hagerstown, Md.)
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