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https://www.readbyqxmd.com/read/29160345/influence-of-the-cranial-base-flexion-on-class-i-ii-and-iii-malocclusions-a-systematic-review
#1
Kélei Cristina Mathias de Almeida, Taísa Boamorte Raveli, Camila Ivini Viana Vieira, Ary Dos Santos-Pinto, Dirceu Barnabé Raveli
OBJECTIVE: The aim of this study was to perform a systematic review on the morphological characteristics of the skull base (flexion, anterior length and posterior length) and the concomitant development of malocclusions, by comparing differences in dimorphism, ethnicity and age. METHODS: The articles were selected by means of electronic search on BBO, MEDLINE and LILACS databases from 1966 to 2016. A qualitative evaluation of the methodologies used on the articles was also performed...
September 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29160343/the-effect-of-hard-tissue-surgical-changes-on-soft-tissue-displacement-a-pilot-cbct-study
#2
Leonardo Koerich, Daniel Paludo Brunetto, Eduardo Terumi Blatt Ohira
INTRODUCTION: This pilot study had as main objective to test the reliability of a new method to evaluate orthognathic surgery outcomes and also, to understand the effect of hard tissue changes on soft tissue displacement. METHODS: The sample consisted of eight patients that underwent bimaxillary advancement and had CBCT at two time points (before surgery and 6-8 months follow-up). Voxel-based cranial base superimposition was used to register the scans. A different technique of iterative closest point (ICP) was used to measure and correlate the changes...
September 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29152642/variability-of-characteristics-of-cranial-projectile-trauma-in-skeletal-material
#3
Caitlin Humphrey, Jaliya Kumaratilake, Maciej Henneberg
In cranial firearm trauma, where soft tissues have decomposed, determining the manner of death can pose difficultly for a forensic anthropologist. Detailed analysis of skeletal wounds may lead to reconstruction of the events surrounding death, however considerable research has been conducted on soft tissue details and less has focused on skeletal wounds alone. Macroscopic descriptive observations were carried out on thirteen skulls from the Hamman-Todd Human Osteological Collection at the Cleveland Museum of Natural History, Ohio which had documented cranial projectile trauma to analyse wound location, shape, size, beveling and projectile paths...
November 14, 2017: Anthropologischer Anzeiger; Bericht über die Biologisch-anthropologische Literatur
https://www.readbyqxmd.com/read/29149358/clinically-directed-neuroimaging-of-ophthalmoplegia
#4
REVIEW
Lucia Danieli, Margherita Montali, Luca Remonda, Hanspeter E Killer, Cesare Colosimo, Alessandro Cianfoni
PURPOSE: Ophthalmoplegia (OP) can have numerous etiologies and different clinical presentations. Most causes of OP can be narrowed down to specific anatomical locations based on clinical information. The aim of this study was to outline the different categories of diseases encountered in patients with OP, based on the location along the ocular motor pathways, and the most appropriate imaging modality for the given scenarios. METHODS: Representative neuroimaging examples of pathological processes causing OP are displayed, sequenced by anatomical location and disease category...
November 17, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29148040/the-endocranial-shape-of-australopithecus-africanus-surface-analysis-of-the-endocasts-of-sts-5-and-sts-60
#5
Amélie Beaudet, Jean Dumoncel, Frikkie de Beer, Stanley Durrleman, Emmanuel Gilissen, Anna Oettlé, Gérard Subsol, John Francis Thackeray, José Braga
Assessment of global endocranial morphology and regional neuroanatomical changes in early hominins is critical for the reconstruction of evolutionary trajectories of cerebral regions in the human lineage. Early evidence of cortical reorganization in specific local areas (e.g. visual cortex, inferior frontal gyrus) is perceptible in the non-human South African hominin fossil record. However, to date, little information is available regarding potential global changes in the early hominin brain. The introduction of non-invasive imaging techniques opens up new perspectives for the study of hominin brain evolution...
November 16, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/29142779/-comparative-analysis-of-grade-i-vs-grade-ii-intracranial-meningiomas-in-a-retrospective-series-of-63-patients
#6
Federico Coppola, Juan Iaconis Campbell, Juan Manuel Herrero, Emilio Volpe, Tito Cersosimo
Objective: We aimed to demonstrate the differences between grade I and II (OMS classification) of intracranial meningiomas. We evaluate their location, Simpson resection grade, re-operations rate, adjuvant treatment and patient outcomes. Methods: We conduct a retrospective review of Sixty- three clinical records of patients who were diagnosed with meningiomas grade I and II (OMS) between 2009-2015 and received surgical treatment at our Hospital. We evaluated different variables such as age, sex, histological type, Simpson grade resection, location, symptoms, radiotherapy, follow-up, mortality rate and patient outcome...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/29140981/wavelet-brain-angiography-suggests-arteriovenous-pulse-wave-phase-locking
#7
William E Butler
When a stroke volume of arterial blood arrives to the brain, the total blood volume in the bony cranium must remain constant as the proportions of arterial and venous blood vary, and by the end of the cardiac cycle an equivalent volume of venous blood must have been ejected. I hypothesize the brain to support this process by an extraluminally mediated exchange of information between its arterial and venous circulations. To test this I introduce wavelet angiography methods to resolve single moving vascular pulse waves (PWs) in the brain while simultaneously measuring brain pulse motion...
2017: PloS One
https://www.readbyqxmd.com/read/29140904/reconstruction-of-microtias-with-constricted-ear-features-a-22-year-experience
#8
Chul Park, Jung Youl Park
BACKGROUND: The surgical correction of 'microtias with constricted ear features' has remained a challenge due to the variable shape and large volume of the remnant cartilage and skin involved. In order to clarify how this remnant cartilage and skin should be treated, we have reviewed and analyzed cases operated at our Center. METHODS: A total of 167 cases of Microtia with Constricted Ear Features, operated from 1992 to 2014, were included in the study. They were reviewed through medical records and photographs, analysis of surgical methods, and postoperative outcomes...
November 11, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29135814/neuro-ophthalmology-at-a-tertiary-eye-care-centre-in-india
#9
Rebika Dhiman, Digvijay Singh, Shiva P Gantayala, Vaitheeswaran L Ganesan, Pradeep Sharma, Rohit Saxena
BACKGROUND: Neuro-ophthalmology as a specialty is underdeveloped in India. The aim of our study was to determine the spectrum and profile of patients presenting to a tertiary eye care center with neuro-ophthalmic disorders. METHODS: A retrospective hospital-based study was conducted, and records of all patients seen at the neuro-ophthalmology clinic of Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India, over a 1-year period were retrieved and evaluated...
November 9, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/29135804/surgical-management-of-tumors-involving-meckel-s-cave-and-cavernous-sinus-role-of-an-extended-middle-fossa-and-lateral-sphenoidectomy-approach
#10
Daniel Q Sun, Arnold H Menezes, Matthew A Howard, Bruce J Gantz, David M Hasan, Marlan R Hansen
OBJECTIVE: To study the indications and outcomes of lateral sphenoidectomy as part of a combined skull base approach in the treatment of tumors involving Meckel's cave (MC) and cavernous sinus (CS). STUDY DESIGN: Retrospective patient series. SETTING: Tertiary referral center. PATIENTS: Twenty-two consecutive patients (mean age: 45 yr, range: 16-76) who underwent transzygomatic, extended middle fossa approaches for tumors involving MC and CS...
November 13, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/29135041/risk-factors-for-tibial-damage-associated-with-the-modified-maquet-technique-in-174-stifles
#11
Michael D Lefebvre, Olivier R Broux, Nicolas P Barthélémy, Martin Hamon, Evelyne V Moyse, Bernard M Bouvy, Marc H Balligand
OBJECTIVE: To identify risk factors for tibial damage associated with the modified Maquet technique (MMT) in dogs with cranial cruciate ligament (CCL) disease. STUDY DESIGN: Retrospective study. SAMPLE POPULATION: One hundred and seventy-four stifles from 147 client-owned dogs. METHODS: Medical records of dogs diagnosed with CCL disease and treated with the current version of MMT were reviewed. Dogs were included if immediate postoperative radiographs were available...
November 14, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/29134167/postoperative-imaging-findings-associated-with-transpalpebral-craniotomy-approach-to-anterior-cranial-fossa
#12
Dennis Monks, Allison Weyer, Peter Thurlow, Khaled Aziz, Erik Happ, Michael Goldberg
Background and Purpose  The transpalpebral "eyelid" approach is a novel alternative to the traditional ciliary or supraciliary incision for supraorbital frontal craniotomy and access to the anterior cranial fossa. Though a prior publication from our institution has described the surgical approach in detail along with cosmetic and clinical outcomes, postoperative imaging findings have not yet been described. As this surgical technique becomes more widely practiced, it is essential for neuroradiologists, oculoplastic surgeons, and skull base neurosurgeons to be familiar with the expected postoperative imaging findings, especially those that prompt subsequent intervention...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29134162/lesions-mimicking-small-vestibular-schwannomas
#13
Matthias Scheich, Rudolf Hagen, Desiree Ehrmann-Müller, Brigitte Bison, Thomas Günthner-Lengsfeld, Camelia-Maria Monoranu, Hans-Ullrich Völker
Objective  Most tumors of the internal auditory canal and cerebellopontine angle (CPA) are vestibular schwannomas (VSs). Preoperative diagnosis is based on typical clinical symptoms and radiological findings. In rare cases, histopathology can, however, show different results. Design  This is a retrospective chart and database review. Setting  The study was conducted at a tertiary skull base referral center at a university hospital. Participants  A total of 207 consecutive cases of VS surgery via the middle cranial fossa approach performed between December 2005 and January 2015 were reviewed...
December 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/29131807/towards-frameless-maskless-srs-through-real-time-6dof-robotic-motion-compensation
#14
Andrew H Belcher, Xinmin Liu, Steven Chmura, Kamil Yenice, Rodney D Wiersma
Stereotactic radiosurgery (SRS) uses precise dose placement to treat conditions of the CNS. Frame-based SRS uses a metal head ring fixed to the patient's skull to provide high treatment accuracy, but patient comfort and clinical workflow may suffer. Frameless SRS, while potentially more convenient, may increase uncertainty of treatment accuracy and be physiologically confining to some patients. By incorporating highly precise robotics and advanced software algorithms into frameless treatments, we present a novel frameless and maskless SRS system where a robot provides real-time 6DoF head motion stabilization allowing positional accuracies to match or exceed those of traditional frame-based SRS...
November 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29130555/ethmoidal-adenocarcinoma-treated-by-exclusive-endoscopic-approach-focus-on-learning-curve-and-modification-of-management
#15
Natalie Oker, Benjamin Verillaud, Michel Wassef, Sébastien Froelich, Damien Bresson, Romain Kania, Philippe Herman
BACKGROUND: The purpose of this study was to investigate the outcome and recurrences for ethmoidal adenocarcinomas treated by exclusive endoscopic surgery in curative intent and investigate the role of the learning curve. METHODS: We conducted a single-center retrospective study, including 60 patients separated in 2 groups (2002-2011 n = 28 and 2012-2015 n = 32). RESULTS: The global survival rate at 5 years was 72.6%, and the global and local recurrence rates were 21...
November 11, 2017: Head & Neck
https://www.readbyqxmd.com/read/29128915/mri-kinematic-analysis-of-t1-sagittal-motion-between-cervical-flexion-and-extension-positions-in-145-patients
#16
Koji Tamai, Zorica Buser, Permsak Paholpak, Kittipong Sessumpun, Patrick C Hsieh, Hiroaki Nakamura, Jeffrey C Wang
PURPOSE: Although the T1 vertebra is considered as an important factor of cervical balance, little is known about its motion between flexion and extension. The purpose of present study was to analyze the T1 sagittal motion using kinematic magnetic resonance imaging (kMRI), and to identify factors that relate to T1 sagittal motion. METHODS: We retrospectively analyzed 145 kMR images taken in weight-bearing neutral, flexion and extension positions. Cervical balance parameters were evaluated in each position...
November 11, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29128167/a-prospective-evaluation-of-hippocampal-radiation-dose-volume-effects-and-memory-deficits-following-cranial-irradiation
#17
Ting Martin Ma, Jimm Grimm, Riley McIntyre, Heather Anderson-Keightly, Lawrence R Kleinberg, Russell K Hales, Joseph Moore, Tracy Vannorsdall, Kristin J Redmond
BACKGROUND AND PURPOSE: To prospectively evaluate hippocampal radiation dose volume effects and memory decline following cranial irradiation. MATERIAL AND METHODS: Effects of hippocampal radiation over a wide range of doses were investigated by combining data from three prospective studies. In one, adults with small cell lung cancer received hippocampal-avoidance prophylactic cranial irradiation. In the other two, adults with glioblastoma multiforme received neural progenitor cell sparing radiation or no sparing with extra dose delivered to subventricular zone...
November 8, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29126120/cranial-chordoma-a-new-preoperative-grading-system
#18
Harley Brito da Silva, David Straus, Jason K Barber, Robert C Rostomily, Manuel Ferreira, Laligam N Sekhar
BACKGROUND: Chordomas are rare but challenging neoplasms involving the skull base. A preoperative grading system will be useful to identify both areas for treatment and risk factors, and correlate to the degree of resection, complications, and recurrence. OBJECTIVE: To propose a new grading system for cranial chordomas designed by the senior author. Its purpose is to enable comparison of different tumors with a similar pathology to clivus chordoma, and statistically correlate with postoperative outcomes...
November 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29125646/epidural-abscess-caused-by-schizophyllum-commune-a-rare-case-of-rhinogenic-cranial-complication-by-a-filamentous-basidiomycete
#19
Kazuya Tone, Ryuichi Fujisaki, Shigehiro Hagiwara, Takashi Tamura, Shinobu Ishigaki, Mohamed Mahdi Alshahni, Makoto Takehisa, Takehiro Watanabe, Takuya Yasui, Takuo Tokairin, Toshiyo Sagawa, Tetsuya Sakamoto, Ken Ito, Kazuyoshi Kuwano, Koichi Makimura
Central nervous system (CNS) infections due to filamentous basidiomycetes are extremely rare. We encountered a case of epidural abscess due to Schizophyllum commune that extended from sinusitis. A 53-year-old Japanese man presented at our hospital with a headache. Computed tomography (CT) of the cranium and sinuses showed ethmoid and sphenoid sinusitis with no intracranial abnormalities. The patient was diagnosed with acute sinusitis and underwent antibiotic treatment. However, the symptoms deteriorated, and the patient came to our hospital again with consciousness disturbance...
November 10, 2017: Mycoses
https://www.readbyqxmd.com/read/29122535/limited-output-transcranial-electrical-stimulation-lotes-2017-engineering-principles-regulatory-statutes-and-industry-standards-for-wellness-over-the-counter-or-prescription-devices-with-low-risk
#20
Marom Bikson, Bhaskar Paneri, Andoni Mourdoukoutas, Zeinab Esmaeilpour, Bashar W Badran, Robin Azzam, Devin Adair, Abhishek Datta, Xiao Hui Fang, Brett Wingeier, Daniel Chao, Miguel Alonso-Alonso, Kiwon Lee, Helena Knotkova, Adam J Woods, David Hagedorn, Doug Jeffery, James Giordano, William J Tyler
We present device standards for low-power non-invasive electrical brain stimulation devices classified as limited output transcranial electrical stimulation (tES). Emerging applications of limited output tES to modulate brain function span techniques to stimulate brain or nerve structures, including transcranial direct current stimulation (tDCS), transcranial alternating current stimulation (tACS), and transcranial pulsed current stimulation (tPCS), have engendered discussion on how access to technology should be regulated...
October 17, 2017: Brain Stimulation
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