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Neurosurgical planning

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https://www.readbyqxmd.com/read/29330751/prospective-trial-evaluating-the-sensitivity-and-specificity-of-3-4-dihydroxy-6-18f-fluoro-l-phenylalanine-18f-dopa-pet-and-mri-in-patients-with-recurrent-gliomas
#1
Ryan S Youland, Deanna H Pafundi, Debra H Brinkmann, Val J Lowe, Jonathan M Morris, Bradley J Kemp, Christopher H Hunt, Caterina Giannini, Ian F Parney, Nadia N Laack
Treatment-related changes can be difficult to differentiate from progressive glioma using MRI with contrast (CE). The purpose of this study is to compare the sensitivity and specificity of 18F-DOPA-PET and MRI in patients with recurrent glioma. Thirteen patients with MRI findings suspicious for recurrent glioma were prospectively enrolled and underwent 18F-DOPA-PET and MRI for neurosurgical planning. Stereotactic biopsies were obtained from regions of concordant and discordant PET and MRI CE, all within regions of T2/FLAIR signal hyperintensity...
January 13, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29319647/transition-to-critical-care-practice-within-an-academic-service-partnership-a-case-report-of-the-first-3-years-of-clinical-immersion-in-trauma-burn-and-neuroscience-critical-care
#2
Esther Bay, Andrea Sherzer, Emily Darnbrook
In response to regulators of nursing education and the Institute of Medicine, an academic-service partnership was formed between a research-intensive school of nursing and a tertiary health care facility. In that partnership, clinical experiences occurred mostly within 1 organization. This case report showcases the development, implementation, and revisions within our capstone immersion course, designed to ease the new graduates' transition into practice, including transitions to critical care nursing. Herein, we highlight our successes and challenges of implementing the clinical component within 2 critical care units focused on trauma and neurosurgical care of complex patients...
January 2018: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
https://www.readbyqxmd.com/read/29319208/image-registration-to-compensate-for-epi-distortion-in-patients-with-brain-tumors-an-evaluation-of-tract-specific-effects
#3
Angela Albi, Antonio Meola, Fan Zhang, Pegah Kahali, Laura Rigolo, Chantal M W Tax, Pelin Aksit Ciris, Walid I Essayed, Prashin Unadkat, Isaiah Norton, Yogesh Rathi, Olutayo Olubiyi, Alexandra J Golby, Lauren J O'Donnell
BACKGROUND AND PURPOSE: Diffusion magnetic resonance imaging (dMRI) provides preoperative maps of neurosurgical patients' white matter tracts, but these maps suffer from echo-planar imaging (EPI) distortions caused by magnetic field inhomogeneities. In clinical neurosurgical planning, these distortions are generally not corrected and thus contribute to the uncertainty of fiber tracking. Multiple image processing pipelines have been proposed for image-registration-based EPI distortion correction in healthy subjects...
January 10, 2018: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/29288394/endoscopic-transorbital-route-to-the-petrous-apex-a-feasibility-anatomic-study
#4
Alberto Di Somma, Norberto Andaluz, Luigi Maria Cavallo, Thomaz E Topczewski, Federico Frio, Rosa Maria Gerardi, Jose Pineda, Domenico Solari, Joaquim Enseñat, Alberto Prats-Galino, Paolo Cappabianca
BACKGROUND: While the subtemporal approach represents the surgical module milestone designed to reach the petrous apex, a novel ventral route, which is the superior eyelid endoscopic transorbital approach, has been proposed to access the skull base. Accordingly, we aimed to evaluate the feasibility of this route to the petrous apex, providing a qualitative and quantitative analysis of this relatively novel pathway. METHODS: Five human cadaveric heads were dissected at the Laboratory of Surgical NeuroAnatomy of the University of Barcelona...
December 29, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29285657/inter-individual-variations-and-hemispheric-asymmetries-in-structural-connectivity-patterns-of-the-inferior-fronto-occipital-fascicle-a-diffusion-tensor-imaging-tractography-study
#5
François Vassal, Benjamin Pommier, Anna Sontheimer, Jean-Jacques Lemaire
PURPOSE: Precise knowledge of the structural connectivity of white matter fascicles could yield new insights into function and is important for neurosurgical planning. Therefore, we aimed to provide a detailed map of the cortical terminations of the inferior fronto-occipital fascicle (IFOF), with special emphasis on putative inter-individual variations and hemispheric asymmetries. METHODS: Deterministic diffusion tensor imaging-based tractography was used to perform virtual dissection of the IFOF in 20 healthy subjects...
December 28, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/29262389/-pontine-hemorrhage-suspected-due-to-dural-arteriovenous-fistula-at-the-craniocervical-junction-a-case-report
#6
Shou Nishii, Tomohiro Araki, Kazuhide Hamada, Yotaro Kitano, Yoichi Miura, Kenji Kanamaru
Dural arteriovenous fistulas occurring at the craniocervical junction(CCJd-AVF)are uncommon; however, they demonstrate a wide range of clinical presentations. We describe the case of a patient with pontine hemorrhage suspected due to CCJd-AVF. A 68-year-old man presented to our hospital with a sudden onset of left hemiparesis. Cranial computed tomography(CT)revealed pontine and subarachnoid hemorrhage. Magnetic resonance imaging, as well as MR, CT, and left vertebral angiograms were performed and showed a CCJd-AVF in addition to a varix coincident with the hematoma cavities...
December 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29241171/virtual-reality-surgical-simulation-implications-for-resection-of-intracranial-gliomas
#7
Ayoub Dakson, Murray Hong, David B Clarke
Surgical simulation has the potential to play important roles in surgical training and preoperative planning. The advent of virtual reality (VR) with tactile haptic feedback has revolutionized surgical simulation, creating a novel environment for residents to learn manual skills without compromising patient safety. This concept is particularly relevant in neurosurgical training where the acquired skill set demands performance of technically challenging tasks under pressure and where the consequences of error are significant...
2018: Progress in Neurological Surgery
https://www.readbyqxmd.com/read/29229344/cavernous-sinus-hemangioma-a-rare-vascular-tumor-of-the-cavernous-sinus
#8
Joshua Bakhsheshian, Gabriel Zada, Martin H Pham
Cavernous sinus hemangiomas (CSH) are rare vascular tumors, which are infrequently encountered in everyday neurosurgical practice. Attempted resection of this lesion without preoperative planning carries a high risk for significant blood loss and cranial neuropathies. Radiation treatments can provide an alternative and safe treatment modality for these lesions. Therefore, an increased awareness is warranted for their clinical suspicion. We reported on a patient that presented with visual deficits and a mass in the sellar, suprasellar and middle fossa regions...
December 8, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29198889/virtual-reality-based-simulators-for-cranial-tumor-surgery-a-systematic-review
#9
REVIEW
Travis Mazur, Tarek R Mansour, Luke Mugge, Azedine Medkour
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 for pre-surgical planning. VR has demonstrated effectiveness in multiple surgical specialties, yet its use in the field of neurosurgery remains limited to date. OBJECTIVES: To examine all current literature on VR based simulation for pre-surgical planning and training in cranial tumor surgeries and to assess the quality of these studies...
November 30, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29194275/preoperative-exposure-of-sigmoid-sinus-trajectory-in-posterolateral-cranial-base-approaches-using-a-new-landmark-through-a-neurosurgical-perspective
#10
Ihsan Doğan, Onur Özgüral, Ümit Eroğlu, Eyyub S M Al-Beyati, Cemil M Kilinç, Ayhan Cömert, Hasan Çağlar Uğur
The location of burr holes in posterolateral cranial base approaches should be appropriate to provide an adequate operative field, and surgical freedom is crucial for bone window opening. The aim of this study was to search for more convenient and easily detectable landmarks in comparison with current landmarks in posterolateral cranial base surgery. Twenty 3-dimensional reconstructed head and neck computed tomography angiography images (group 1) and 20 cadaver heads (group 2) were evaluated. An imaginary line connecting the angle of the mandible and the mastoid tip was extended upward...
November 20, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29191534/microsurgical-clipping-of-a-giant-middle-cerebral-artery-aneurysm-with-successful-postoperative-endovascular-mechanical-thrombectomy-for-treatment-of-emergent-large-vessel-occlusion
#11
Joshua T Prickett, Brendan J Klein, Joshua A Cuoco, Biraj M Patel, John C Fraser, Eric A Marvin
BACKGROUND: Giant intracranial aneurysms (>25mm) are uncommon. These lesions typically manifest clinically due to mass effect, acute hemorrhage, or thromboembolic events. To minimize the chances of poor clinical outcome, detailed operative planning and fully integrated considerations and collaboration among neurosurgical and endovascular techniques are essential prior to microsurgical clipping of ruptured giant aneurysms. CASE DESCRIPTION: We describe a case involving a 15 year-old male with a ruptured giant middle cerebral artery aneurysm, treated with microsurgical clipping...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29191526/clinical-application-of-an-open-source-3d-volume-rendering-software-to-neurosurgical-approaches
#12
Bruno Fernandes de Oliveira Santos, Marcos Devanir Silva da Costa, Ricardo Silva Centeno, Sergio Cavalheiro, Manoel Antônio de Paiva Neto, Michael T Lawton, Feres Chaddad-Neto
OBJECTIVE: Preoperative recognition of the anatomic individualities of each patient can help in achieving more precise and less invasive approaches. Moreover, this may help with anticipating potential complications and intraoperative difficulties. To describe the use, accuracy, and precision of a free tool for planning microsurgical approaches using three-dimensional reconstructions from magnetic resonance images. METHODS: We used the 3D Volume Rendering tool of an open source and free software program for three-dimensional reconstruction of images of surgical sites obtained by MRI volumetric acquisitions...
November 27, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29184656/multimodal-connectivity-based-eloquence-score-computation-and-visualisation-for-computer-aided-neurosurgical-path-planning
#13
Saeed M Bakhshmand, Roy Eagleson, Sandrine de Ribaupierre
Non-invasive assessment of cognitive importance has been a major challenge for planning of neurosurgical procedures. In the past decade, in vivo brain imaging modalities have been considered for estimating the 'eloquence' of brain areas. In order to estimate the impact of damage caused by an access path towards a target region inside of the skull, multi-modal metrics are introduced in this paper. Accordingly, this estimated damage is obtained by combining multi-modal metrics. In other words, this damage is an aggregate of intervened grey matter volume and axonal fibre numbers, weighted by their importance within the assigned anatomical and functional networks...
October 2017: Healthcare Technology Letters
https://www.readbyqxmd.com/read/29174238/association-of-hospital-teaching-status-with-neurosurgical-outcomes-an-instrumental-variable-analysis
#14
Kimon Bekelis, Symeon Missios, Shannon Coy, Todd A MacKenzie
BACKGROUND: The interpretation of the results of prior studies on the association of hospital teaching status with surgical outcomes is limited by selection bias. We investigated whether undergoing surgical operations in teaching hospitals is associated with improved outcomes. METHODS: We performed a cohort study of all patients undergoing spine and cranial operations who were registered in the New York Statewide Planning and Research Cooperative System (SPARCS) database from 2009-2013...
November 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29165746/computed-tomographic-localization-of-the-central-sulcus-a-morphometric-study-in-adult-patients
#15
Dan Zimelewicz Oberman, Jorge Rasmussen, Maximiliano Toscano, Ezequiel Goldschmidt, Pablo Ajler
AIM: Despite advances in intraoperative navigation and electrocorticography, neuroanatomical knowledge is an essential tool for neurosurgical planning. The aim of this study was to accurately describe the relations between the anatomical landmarks of the cranial convexity and the main cortical structures. MATERIAL AND METHODS: A retrospective cross-sectional, observational study was performed. Computed tomography scans of 71 adult patients with no pathological imaging were analyzed...
November 1, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29161465/neuromuscular-electrical-stimulation-for-the-prevention-of-venous-thromboembolism
#16
REVIEW
Shahab Hajibandeh, Shahin Hajibandeh, George A Antoniou, James Rh Scurr, Francesco Torella
BACKGROUND: Venous thromboembolism (VTE) is a serious but preventable cause of morbidity and mortality. Neuromuscular electrical stimulation systems (NMES) for the prevention of VTE may be beneficial for patients in whom pharmacological or standard mechanical prophylaxis methods are contraindicated or are regarded as unsafe or impractical. Although findings of experimental studies suggest that NMES reduce venous stasis, the clinical utility and effectiveness of NMES in VTE prevention remain controversial...
November 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29155706/comprehensive-endovascular-and-open-surgical-management-of-cerebral-arteriovenous-malformations
#17
Robert C Rennert, Jeffrey A Steinberg, Vincent J Cheung, David R Santiago-Dieppa, Jeffrey Scott Pannell, Alexander A Khalessi
Arteriovenious malformations (AVMs) are associated with significant morbidity and mortality, and have a rupture risk of ~3% per year. Treatment of AVMs must be tailored specifically to the lesion, with surgical resection being the gold standard for small, accessible lesions. Pre-operative embolization of AVMs can reduce nidal blood flow and remove high-risk AVM features such as intranidal or venous aneurysms, thereby simplifying a challenging neurosurgical procedure. Herein, we describe our approach for the staged endovascular embolization and open resection of AVMs, and highlight the advantages of having a comprehensively trained neurovascular surgeon leading a multi-disciplinary clinical team...
October 20, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29139096/the-modified-frailty-index-and-30-day-adverse-events-in-oncologic-neurosurgery
#18
Brett E Youngerman, Alfred I Neugut, Jingyan Yang, Dawn L Hershman, Jason D Wright, Jeffrey N Bruce
The modified frailty index (mFI) is emerging as a leading measure for preoperative risk assessment using routinely available medical record data. Our objective was to determine if mFI predicts morbidity and mortality in the diverse national cohort of patients undergoing neurosurgery for intracranial neoplasms. We identified patients in the National Surgical Quality Improvement Program who underwent oncologic neurosurgery procedures between 2008 and 2012. The mFI, ranging from 0 to 1, was calculated as the proportion of 11 possible risk factors present...
November 14, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29134342/an-introduction-and-overview-of-machine-learning-in-neurosurgical-care
#19
REVIEW
Joeky T Senders, Mark M Zaki, Aditya V Karhade, Bliss Chang, William B Gormley, Marike L Broekman, Timothy R Smith, Omar Arnaout
BACKGROUND: Machine learning (ML) is a branch of artificial intelligence that allows computers to learn from large complex datasets without being explicitly programmed. Although ML is already widely manifest in our daily lives in various forms, the considerable potential of ML has yet to find its way into mainstream medical research and day-to-day clinical care. The complex diagnostic and therapeutic modalities used in neurosurgery provide a vast amount of data that is ideally suited for ML models...
January 2018: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29132231/the-use-of-desflurane-for-neurosurgical-procedures-in-rhesus-macaque-macaca-mulatta
#20
Henri Gmj Bertrand, Charlotte Sandersen, Paul A Flecknell
Volatile agents are widely used to anaesthetise laboratory non-human primates as they allow a rapid induction and recovery as well as an easy adjustment of the anaesthesia plan. Desflurane is currently the volatile agent with the lowest solubility in blood, and hence enables the most rapid onset of anaesthesia and most rapid recovery. This study aimed to investigate the suitability of desflurane for maintenance of general anaesthesia in rhesus macaques undergoing elective experimental neurosurgery. Fourteen primates (five males and nine females) were sedated with ketamine (10 mg kg(-1)) and anaesthesia was induced with propofol (usually 8 mg kg(-1) IV)...
January 1, 2017: Laboratory Animals
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