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https://www.readbyqxmd.com/read/29134342/an-introduction-and-overview-of-machine-learning-in-neurosurgical-care
#1
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...
November 13, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29101896/a-simplified-application-app-for-the-parametric-design-of-screw-plate-fixation-of-bone-fractures
#2
Chen-Yuan Chung
Screw and plate fixation is commonly used to treat bone fractures. A prototype application (APP) for presurgical simulation was developed and validated by comparing it with current analytical approach and other models. In this APP, alternative plate designs and materials to limit the effects of stress shielding could be tested. In addition, the number and position of screws and the gap between bone and plate that achieved acceptable stability were predicted. The fixation stability providing a situation of interfragmentary strain between 2% and 10% is necessary for callus formation...
November 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29100900/comparison-of-dietary-habits-and-plans-for-dietary-changes-in-black-and-white-women-seeking-bariatric-surgery
#3
Kendall L McLean, Carolyn E Moore, Derek C Miketinas, Catherine M Champagne
BACKGROUND: Achieving weight loss after bariatric surgery depends on the individual's ability to sustain lifestyle changes involving dietary modifications. Presurgical dietary assessment is critical to evaluate usual dietary habits and identify the need for intervention before surgery. OBJECTIVES: The objective of this study was to identify usual dietary habits of black and white women seeking bariatric surgery and to examine potential differences between these ethnic groups...
September 20, 2017: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/29060548/low-grade-glioma-growth-modeling-considering-chemotherapy-and-radiotherapy-effects-from-magnetic-resonance-images
#4
Ahmed Elazab, Hongmin Bai, Xiaodong Zhang, Qingmao Hu
Studying tumor growth using mathematical models from magnetic resonance (MR) images is an important application that is believed to play a major role in cancer treatment by predicting tumor evolution, quantifying the response to therapy, and treatment planning. Reaction diffusion is the most popular model because of its simplicity and consistency with the biological growth process. However, most of the current growth models focus on presurgical images and likely without treatment. In this paper, we propose a new reaction diffusion model to consider the chemotherapy and radiotherapy effects on the tumor growth modelling for patients with low grade glioma...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29049429/correlation-of-handheld-reflectance-confocal-microscopy-with-radial-video-mosaicing-for-margin-mapping-of-lentigo-maligna-and-lentigo-maligna-melanoma
#5
Oriol Yélamos, Miguel Cordova, Nina Blank, Kivanc Kose, Stephen W Dusza, Erica Lee, Milind Rajadhyaksha, Kishwer S Nehal, Anthony M Rossi
Importance: The management of lentigo maligna (LM) and LM melanoma (LMM) is challenging because of extensive subclinical spread and its occurrence on cosmetically sensitive areas. Reflectance confocal microscopy (RCM) improves diagnostic accuracy for LM and LMM and can be used to delineate their margins. Objectives: To evaluate whether handheld RCM with radial video mosaicing (HRCM-RV) offers accurate presurgical assessment of LM and LMM margins. Design, Setting, and Participants: This prospective study included consecutive patients with biopsy-proven LM and LMM located on the head and neck area who sought consultation for surgical management from March 1, 2016, through March 31, 2017, at the Dermatology Service of the Memorial Sloan Kettering Cancer Center...
October 11, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/29044894/immediate-implant-placement-and-provisionalization-following-tumor-resective-surgery-in-the-midfacial-region-a-case-series
#6
Nelson Fernandes, Jacobus van den Heever, Leanne Sykes
Surgical and prosthodontic restoration of the midfacial region following tumor resection has always posed a considerable challenge, as this area serves crucial functional and esthetic roles. Being diagnosed and subsequently treated for facial tumors can have an immense psychosocial impact on a patient, as the resulting defects are often disfiguring, and lead to an inability to masticate, swallow, and speak clearly. Provision of an immediate facial and dental prosthesis at the time of surgery can limit these side effects and help reduce mental duress on these patients and their families, as well as aid in the process of rehabilitation...
October 18, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29027866/magnetic-resonance-imaging-guided-laser-interstitial-thermal-therapy-as-treatment-for-intractable-insular-epilepsy-in-children
#7
M Scott Perry, David J Donahue, Saleem I Malik, Cynthia G Keator, Angel Hernandez, Rohit K Reddy, Freedom F Perkins, Mark R Lee, Dave F Clarke
OBJECTIVE Seizure onset within the insula is increasingly recognized as a cause of intractable epilepsy. Surgery within the insula is difficult, with considerable risks, given the rich vascular supply and location near critical cortex. MRI-guided laser interstitial thermal therapy (LiTT) provides an attractive treatment option for insular epilepsy, allowing direct ablation of abnormal tissue while sparing nearby normal cortex. Herein, the authors describe their experience using this technique in a large cohort of children undergoing treatment of intractable localization-related epilepsy of insular onset...
October 13, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29027863/potential-utility-of-flair-in-mri-negative-cushing-s-disease
#8
Grégoire P Chatain, Nicholas Patronas, James G Smirniotopoulos, Martin Piazza, Sarah Benzo, Abhik Ray-Chaudhury, Susmeeta Sharma, Maya Lodish, Lynnette Nieman, Constantine A Stratakis, Prashant Chittiboina
OBJECTIVE Accurate presurgical localization of microadenomas in Cushing's disease (CD) leads to improved remission rates and decreased adverse events. Volumetric gradient recalled echo (3D-GRE) MRI detects pituitary microadenomas in CD in up to 50%-80% cases as a focus of hypointensity due to delayed contrast wash-in. The authors have previously reported that postcontrast FLAIR imaging may be useful in detecting otherwise MRI-negative pituitary microadenomas as foci of hyperintensity. This reflects theoretically complementary imaging of microadenomas due to delayed contrast washout...
October 13, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28987192/bioimaging-and-surgery-of-brain-tumors
#9
Georg Widhalm, Tatjana Traub-Weidinger, Johannes A Hainfellner, Michal Bienkowski, Stefan Wolfsberger, Thomas Czech
Bioimaging of brain tumors using nuclear medicine techniques complements computed tomography (CT) and magnetic resonance imaging (MRI), thus allowing more accurate diagnosis in clinically ambiguous situations. Special tracers for positron emission tomography (PET) have been developed which allow monitoring and planning of therapy. PET data may provide also presurgical evidence with regard to the presence of clinically relevant molecular brain tumor biomarkers. Combined PET/CT and PET/MR hybrid imaging systems will further enhance bioimaging-based brain tumor analysis...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28985934/application-of-resting-state-functional-mr-imaging-to-presurgical-mapping-language-mapping
#10
REVIEW
Haris I Sair, Shruti Agarwal, Jay J Pillai
Resting state functional MR imaging (rs-fMR imaging) has become an indispensable tool for examining brain function. The greatest opportunity to translate rs-fMR imaging from the research domain into clinical use is as a tool for examining intrinsic brain networks for preoperative planning. Many studies have demonstrated concordance of intrinsic motor networks from rs-fMR imaging data with task-fMR imaging and direct cortical stimulation. Earlier reports show concordance of language networks as well, although more recent studies with larger numbers of subjects demonstrate subject-level variability that needs to be further investigated and addressed before widespread implementation of rs-fMR imaging for preoperative planning...
November 2017: Neuroimaging Clinics of North America
https://www.readbyqxmd.com/read/28965456/adolescent-idiopathic-scoliosis-risk-factors-for-complications-and-the-effect-of-hospital-volume-on-outcomes
#11
Richard P Menger, Piyush Kalakoti, Andrew J Pugely, Anil Nanda, Anthony Sin
OBJECTIVE Adolescent idiopathic scoliosis (AIS) is the most common form of scoliosis. Limited literature exists defining risk factors associated with outcomes during initial hospitalization in these patients. In this study, the authors investigated patient demographics, clinical and hospital characteristics impacting short-term outcomes, and costs in adolescent patients undergoing surgical deformity correction for idiopathic scoliosis. Additionally, the authors elucidate the impact of hospital surgical volume on outcomes for these patients...
October 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28964546/three-dimensional-printing-role-in-neurologic-disease
#12
REVIEW
Adrien-Maxence Hespel
Three-dimensional printing has evolved dramatically in recent years and is now available for clinical use. Technical operations of 2 of the most common rapid prototyping processes (stereolithography and fused deposition modeling) and the steps involved in the creation of a prototype are discussed. Current applications in human neurosurgery including presurgical planning and educational opportunities are reviewed before focusing on the current applications in veterinary neurology.
September 27, 2017: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/28962738/facial-improvement-after-mandibular-midline-distraction-and-surgically-assisted-rapid-maxillary-expansion
#13
C Maarten Suttorp, Dries J S Desmedt, Thomas J J Maal, K Hero Breuning
This case report describes the retreatment of a 49-year-old woman with severe crowding in the mandibular incisor region and tapered maxillary and mandibular arches. Treatment consisted of mandibular midline distraction and surgically assisted rapid maxillary expansion to increase arch length. The need for proper presurgical orthodontics is described, and the complications during treatment are discussed. The results of treatment, including the superimposition of 3-dimensional facial scans, are presented. The treatment approach we used is typically indicated for patients with previous extractions of all first premolars who develop significant crowding after treatment...
October 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28952404/partial-resection-of-presurgical-fmri-activation-is-associated-with-a-postsurgical-loss-of-language-function-after-frontal-lobe-epilepsy-surgery
#14
Kirsten Labudda, Markus Mertens, Thilo Kalbhenn, Reinhard Schulz, Friedrich G Woermann
We describe five patients with frontal lobe epilepsy who underwent electrocortical stimulation (ES) for language localization and language functional magnetic resonance imaging (fMRI) prior to epilepsy surgery. Six months after surgery, three patients suffered from a drop of verbal fluency. In all of them, frontal areas with presurgical language fMRI activity were resected. Our results suggest that resection in regions of areas with presurgical fMRI activation is not without risk for a postsurgical loss of function, even when ES results were negative for language function in these areas...
September 27, 2017: Neurocase
https://www.readbyqxmd.com/read/28945910/natural-and-artificial-intelligence-in-neurosurgery-a-systematic-review
#15
Joeky T Senders, Omar Arnaout, Aditya V Karhade, Hormuzdiyar H Dasenbrock, William B Gormley, Marike L Broekman, Timothy R Smith
BACKGROUND: Machine learning (ML) is a domain of artificial intelligence that allows computer algorithms to learn from experience without being explicitly programmed. OBJECTIVE: To summarize neurosurgical applications of ML where it has been compared to clinical expertise, here referred to as "natural intelligence." METHODS: A systematic search was performed in the PubMed and Embase databases as of August 2016 to review all studies comparing the performance of various ML approaches with that of clinical experts in neurosurgical literature...
September 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28932053/management-of-squamous-cell-carcinoma-of-the-maxillary-sinus
#16
Kanva Ramasanjeevaiah Jnanadev, H S Sheethal, H S Suraj, K B Rudresh
Surgical management of malignant tumors disfigures and demoralizes individuals. Management of such patients requires concern humane approach, meticulous planning and judicious management of a case. It is the responsibility of a dentist to restore the lost function, speech and esthetics. This clinical case report signifies the role of the dentist starting from diagnosis, presurgical phase, surgical phase and postsurgical phase of a patient diagnosed with squamous cell carcinoma of the right maxilla.
May 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28913492/incorporating-airway-examination-photography-into-the-electronic-record
#17
Joshua W Sappenfield, Nik Gravenstein, Judith M Wishin, Chukwudi Obiora Chiaghana, David Smyth, Brenda G Fahy, Terrie Vasilopoulos, Laurie Davies, F Kayser Enneking
BACKGROUND: Photography of the airway has been used in research to validate preoperative airway assessment and the likelihood of identifying the difficult-to-mask ventilate and/or intubate patient. Up till now, no study has demonstrated the perceived utility of incorporation of airway photographs into the anesthesia preassessment. METHODS: The University of Florida Health Presurgical Clinic routinely incorporates three photographs of all adult patients during their preanesthesia visit...
April 2017: Rom J Anaesth Intensive Care
https://www.readbyqxmd.com/read/28882861/real-time-motor-cortex-mapping-for-the-safe-resection-of-glioma-an-intraoperative-resting-state-fmri-study
#18
T-M Qiu, F-Y Gong, X Gong, J-S Wu, C-P Lin, B B Biswal, D-X Zhuang, C-J Yao, X-L Zhang, J-F Lu, F-P Zhu, Y Mao, L-F Zhou
BACKGROUND AND PURPOSE: Resting-state functional MR imaging has been used for motor mapping in presurgical planning but never used intraoperatively. This study aimed to investigate the feasibility of applying intraoperative resting-state functional MR imaging for the safe resection of gliomas using real-time motor cortex mapping during an operation. MATERIALS AND METHODS: Using interventional MR imaging, we conducted preoperative and intraoperative resting-state intrinsic functional connectivity analyses of the motor cortex in 30 patients with brain tumors...
September 7, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28875957/transition-from-tumor-tissue-to-bone-marrow-in-patients-with-appendicular-osteosarcoma-after-neoadjuvant-chemotherapy
#19
Zhi-Ping Deng, Bao-Yue Liu, Yang Sun, Tao Jin, Bin Li, Yi Ding, Xiao-Hui Niu
Background: Limb-salvage surgery is the standard procedure for the treatment of appendicular osteosarcoma. Precise resection is the trend in limb-salvage surgery. The aim of this study was to evaluate a large series of cases to identify the histological relationship between the tumor and marrow and determine the intramedullary transition type and width from the tumor to normal marrow in patients with osteosarcoma after neoadjuvant chemotherapy. Methods: One hundred and six osteosarcoma specimens were evaluated...
September 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28870986/factors-affecting-seizure-outcome-after-epilepsy-surgery-an-observational-series
#20
Gail S Bell, Jane de Tisi, Juan Carlos Gonzalez-Fraile, Janet L Peacock, Andrew W McEvoy, William F J Harkness, Jacqueline Foong, Rebecca A Pope, Beate Diehl, Josemir W Sander, John S Duncan
IMPORTANCE: Surgical treatment can bring seizure remission in people with focal epilepsy but requires careful selection of candidates. OBJECTIVES: To determine which preoperative factors are associated with postoperative seizure outcome. DESIGN: We audited seizure outcome of 693 adults who had resective epilepsy surgery between 1990 and 2010 and used survival analysis to detect preoperatively identifiable risk factors of poor seizure outcome...
November 2017: Journal of Neurology, Neurosurgery, and Psychiatry
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