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https://www.readbyqxmd.com/read/28945054/intracranial-stereotactic-radiosurgery
#1
Andrew A Fanous, Dheerendra Prasad, David Mathieu, Andrew J Fabiano
Stereotactic radiosurgery (SRS) is the use of a single high dose of radiation, stereotactically directed to an intracranial region of interest, in order to create a lesion or obliterate a preexisting one. This technology has evolved over the years into the use of multiple radiation sources oriented at a variety of angles, thus permitting the creation of various treatment target shapes. This allows for non-open surgical treatment of intracranial pathologies, which significantly decreases the risk of morbidity...
September 22, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28945052/negative-influence-of-preoperative-tinnitus-on-hearing-preservation-in-vestibular-schwannoma-surgery
#2
Luciano Mastronardi, Guglielmo Cacciotti, Raffaellino Roperto, Ettore DI Scipio
BACKGROUNDS: Goals of vestibular schwannoma (VS) microsurgery are: maximal resection, facial nerve (FN) preservation and, in selected cases, hearing preservation (HP). Postoperative HP rates are related to clinical and radiographic factors: size of tumor, preoperative hearing, hypertension, diabetes, and presence or absence of preoperative tinnitus. In this retrospective review we evaluated the influence of preoperative tinnitus on HP after VS surgery in patients with preoperative socially useful hearing (SUH)...
September 22, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28944903/gpvi%C3%A2-fc%C3%A2-peg-improves-cerebral-infarct-volume-and-cerebral-thrombosis-in-mouse-model-with-cerebral-thrombosis
#3
Yimae Wufuer, Xuefeng Shan, Magaoweiya Sailike, Kamile Adilaimu, Songfeng Ma, Huguo Wang
Cerebral thrombosis is one of the most common causes of cerebral infarction, and anticoagulation therapy is a routine treatment in patients with hemorrhagic cerebral venous thrombosis. The hemostatic function of platelets is important for the anticoagulation therapy of thrombosis. Glycoprotein VI (GPVI) is reported as the major signaling receptor for collagen and is exclusively expressed on platelets and megakaryocytes, initiating platelet recruitment at sites of vascular injury and demonstrating numerous beneficial effects for patients with cerebral thrombosis...
September 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944764/decorating-fiber-nanotip-with-single-perovskite-quantum-dot-and-other-luminescent-nanocrystals-synthesized-in-oil-phase
#4
Yu Qian, Xing Xing, Ya Xu, Zhenda Lu, Weihua Zhang
We report a simple yet robust method for fabricating single perovskite quantum dot decorated fiber nanotips. In this method, a single quantum dot is directly picked up and subsequently glued on the apex of a specially fabricated cantilever fiber tip with a high success rate (approx. 70%) without using expensive close-loop feedback systems. Thanks to the flexibility and robustness of the fiber tips, no damage of the tips was observed in the process. Moreover, nanocrystal dispersing technique was developed to avoid undesired aggregations of quantum dots, and it guarantees that only one quantum dot is glued for each time...
September 25, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28944759/optimization-of-an-ultralow-dose-high-resolution-pediatric-pet-scanner-design-based-on-monolithic-scintillators-with-dual-sided-digital-sipm-readout-a-simulation-study
#5
Ekaterina Mikhaylova, Valerio Tabacchini, Giacomo Borghi, Pieter Mollet, Ester D'Hoe, Dennis R Schaart, Stefaan Vandenberghe
The goal of this simulation study is the performance evaluation and comparison of six potential designs for a time-of-flight PET scanner for pediatric patients of up to about 12 years of age. It is designed to have a high sensitivity and provide high-contrast and high-resolution images. The simulated pediatric PET is a full ring scanner, consisting of 32 × 32 mm<sup>2</sup> monolithic LYSO:Ce crystals coupled to digital silicon photomultiplier (dSiPM) arrays. The six considered designs differ in axial lengths (27...
September 25, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28944711/a-hybrid-composite-system-of-biphasic-calcium-phosphate-granules-loaded-with-hyaluronic-acid-gelatin-hydrogel-for-bone-regeneration
#6
Omar Faruq, Boram Kim, Andrew R Padalhin, Gun Hee Lee, Byong-Taek Lee
An ideal bone substitute should be made of biocompatible materials that mimic the structure, characteristics, and functions of natural bone. Many researchers have worked on the fabrication of different bone scaffold systems including ceramic-polymer hybrid system. In the present study, we incorporated hyaluronic acid-gelatin hydrogel to micro-channeled biphasic calcium phosphate granules as a carrier to improve cell attachment and proliferation through highly interconnected porous structure. This hybrid system is composed of ceramic biphasic calcium phosphate granules measuring 1 mm in diameter with seven holes and hyaluronic acid-gelatin hydrogel...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28944643/injury-rates-in-martial-art-athletes-anthropometric-parameters-and-training-volume-but-not-foot-morphology-indexes-are-predictive-risk-factors-for-lower-limb-injuries
#7
Jacopo A Vitale, Tito Bassani, Fabio Galbusera, Alberto Bianchi, Nicolò Martinelli
BACKGROUND: Previous studies attempted to identify possible risk factors for acute and overuse injuries in several sports disciplines such as running, gymnastics or team sports. Given the lack of scientific works focused on risk factors for lower limb injuries in martial arts, the present study was aimed to investigate foot anatomy, anthropometric measures, and other background information as possible risk factors of injury in barefoot athletes practicing judo, karate, kung fu, thai boxe, or aikido...
September 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28944583/venous-anastomosis-using-a-nonpenetrating-vascular-closure-system-in-orthotopic-liver-transplantation
#8
Yuan Wang, Zhao Xin, Bing Pan, Shao-Cheng Lv, Xing-Mao Zhang, Zhi-Hua Zhang, Li-Xin Li, Xian-Liang Li, Qiang He
BACKGROUND: A nonpenetrating vessel closure system (VCS-AnastoClip(®) ) may facilitate vascular anastomosis. The purpose of this study is to explore the utilization of a nonpenetrating VCS in orthotopic liver transplantation (OLT). METHODS: From January 2015 to February 2017, patients who underwent OLT were divided into two groups, i.e., those who underwent nonpenetrating VCS application for inferior vena cava (IVC) and portal vein (PV) reconstructions and those who underwent hand sewing for these purposes...
September 25, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28944528/using-species-traits-to-predict-detectability-of-animals-on-aerial-surveys
#9
S Schlossberg, M J Chase, C R Griffin
In animal surveys, detectability can vary widely across species. We hypothesized that detectability of animals should be a function of species traits such as mass, color, and mean herd size. We also hypothesized that models of detectability based on species traits can be used to predict detectability for new species not in the original dataset, leading to substantial benefits for ecology and conservation. We tested these hypotheses with double-observer aerial surveys of 10 mammal species in northern Botswana...
September 25, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28944517/biomechanical-comparison-of-xenogeneic-bone-material-treated-with-different-methods
#10
Wei Feng, Dongsong Li, Junting Zang, Li Fu
Bone xenografting is considered one of the most effective ways to address the shortage of bone autografts and allografts. Various methods have been employed to minimize the immune rejection issues associated with bone xenografts. However, the side effects of such methods on bone biomechanical properties remain unclear. As such, the objective of this study was to compare the influence of different treatments on the biomechanical properties of porcine bones. Fresh pig ribs were cut into 1.5 × 0.5 × 0.4 cm specimens, which were randomly divided into four groups and subjected to different modification regimes: group A by degreasing and partial deproteinization, group B by cryopreservation, group C by cryopreservation and enzyme digestion, and group D was a control group using fresh bone...
September 24, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28944376/effect-of-dentin-moisture-and-application-mode-of-universal-adhesives-on-the-adhesion-of-glass-fiber-posts-to-root-canal
#11
Yançanã Luizy Gruber, Thaís Emanuelle Bakaus, Osnara Maria Mongruel Gomes, Alessandra Reis, Giovana Mongruel Gomes
PURPOSE: To evaluate the effect of dentin moisture and application mode of universal adhesives on bond strength (BS) and nanoleakage (NL) of fiber posts bonded to root dentin. MATERIALS AND METHODS: The roots of 96 extracted human canines were treated endodontically, and the fiber posts were cemented according to the combination of the following factors: dentin moisture (dry and wet), cementation system [Single Bond Universal/RelyX ARC (SBU) and Prime&Bond elect/Enforce (PBE)], and adhesive application [active (A) and passive (P)] in accordance with the manufacturer's instructions...
September 21, 2017: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/28944371/prosthetic-protocols-in-implant-based-oral-rehabilitations-a-systematic-review-on-the-clinical-outcome-of-monolithic-all-ceramic-single-and-multi-unit-prostheses
#12
Frank A Spitznagel, Sebastian D Horvath, Petra C Gierthmuehlen
AIM: The purpose of this systematic review was to assess the clinical performance of implant-supported monolithic all-ceramic single- and multi-unit restorations. MATERIALS AND METHODS: The electronic databases of MEDLINE via PubMed, the Cochrane Library (CENTRAL) and EMBASE were searched for clinical studies on monolithic all-ceramic single and multi-unit implant-supported fixed dental prostheses. Human studies with a mean follow-up of at least 2 years and published in English or German language peer-reviewed journals up until August 2016 were included...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28944359/crestal-sinus-lift-using-an-implant-with-an-internal-l-shaped-channel-1-year-after-loading-results-from-a-prospective-cohort-study
#13
Marco Tallarico, David L Cochran, Erta Xhanari, Claudia Dellavia, Elena Canciani, Eitan Mijiritsky, Silvio Mario Meloni
PURPOSE: To evaluate the clinical and radiographic outcomes of a one-stage crestal sinus elevation procedure using a self-tapping endosseous implant system (iRaise, Maxillent, Herzliya, Israel) developed for sinus augmentation, 1 year after loading. MATERIALS AND METHODS: Patients needing restoration in the posterior maxilla with a residual alveolar crest of 3 to 8 mm in height and 5 mm in width distal to the canine as measured on CBCT scan were treated using the iRaise sinus lift system...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28944358/ceramic-vs-composite-veneering-of-full-arch-implant-supported-zirconium-frameworks-assessing-patient-preference-and-satisfaction-a-crossover-double-blind-randomised-controlled-trial
#14
Mauro Merli, Eugenio Bianchini, Giorgia Mariotti, Marco Moscatelli, Matteo Piemontese, Giorgio Rappelli, Michele Nieri
PURPOSE: The objectives of this two-period, crossover, mono-centred, double-blind, randomised controlled trial (RCT) were to compare two different materials used for full arch implant-supported prosthetic restorations with regard to patient preference and impact on a patient's quality of life. MATERIALS AND METHODS: Edentulous patients requesting one full arch restoration in the mandible or maxilla supported by dental implants were included in this study. Patients were randomised to receive either a full arch zirconia framework hand-veneered with ceramic, or a full arch zirconia framework hand-veneered with composite material...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28944357/endodontic-retreatment-vs-dental-implants-of-teeth-with-an-uncertain-endodontic-prognosis-1-year-results-from-a-randomised-controlled-trial
#15
Marco Esposito, Marco Tallarico, Anna Trullenque-Eriksson, Rodolfo Gianserra
PURPOSE: To ascertain whether in the presence of a previously endodontically treated tooth with a periapical pathology and/or symptoms and an uncertain prognosis, it is better to endodontically retreat it or to replace the tooth with a single implant-supported crown. MATERIALS AND METHODS: Forty patients requiring the treatment of a previously endodontically treated tooth, with a periapical pathology and/or symptoms of endodontic origin and an uncertain prognosis, as judged by the recruiting investigators, were randomly allocated to endodontic retreatment (endo group; 20 patients) or tooth extraction and replacement with an implant-supported crown (implant group; 20 patients) according to a parallel group design at two different centres...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/28944301/intravenous-rehydration-of-malnourished-children-with-acute-gastroenteritis-and-severe-dehydration-a-systematic-review
#16
Kirsty A Houston, Jack G Gibb, Kathryn Maitland
Background: Rehydration strategies in children with severe acute malnutrition (SAM) and severe dehydration are extremely cautious. The World Health Organization (WHO) SAM guidelines advise strongly against intravenous fluids unless the child is shocked or severely dehydrated and unable to tolerate oral fluids. Otherwise, guidelines recommend oral or nasogastric rehydration using low sodium oral rehydration solutions. There is limited evidence to support these recommendations. Methods: We conducted a systematic review of randomised controlled trials (RCTs) and observational studies on 15 (th) June 2017 comparing different strategies of rehydration therapy in children with acute gastroenteritis and severe dehydration, specifically relating to intravenous rehydration, using standard search terms...
2017: Wellcome Open Research
https://www.readbyqxmd.com/read/28944287/detection-of-pentosidine-cross-links-in-cell-secreted-decellularized-matrices-using-time-resolved-fluorescence-spectroscopy
#17
Debika Mitra, Hussain Fatakdawala, Michael Nguyen-Truong, Amy Creecy, Jeffry Nyman, Laura Marcu, J Kent Leach
Hyperglycemia-mediated, nonenzymatic collagen cross-links such as pentosidine (PENT) can have deleterious effects on cellular interactions with the extracellular matrix (ECM). Present techniques to quantify PENT are limited, motivating the need for improved methods to study the accumulation and contribution of PENT toward diabetic clinical challenges such as impaired bone healing. Current methods for studying PENT are destructive, laborious, and frequently employ oversimplified collagen films that lack the complexity of the native ECM...
September 11, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/28944248/use-of-promis-for-patients-undergoing-primary-total-shoulder-arthroplasty
#18
S Blake Dowdle, Natalie Glass, Chris A Anthony, Carolyn M Hettrich
BACKGROUND: The Patient-Reported Outcomes Measurement Information System (PROMIS) consists of question banks for health domains through computer adaptive testing (CAT). HYPOTHESIS: For patients with glenohumeral arthritis, (1) there would be high correlation between traditional patient-reported outcome (PRO) measures and the PROMIS upper extremity item bank (PROMIS UE) and PROMIS physical function CAT (PROMIS PF CAT), and (2) PROMIS PF CAT would not demonstrate ceiling effects...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28944198/long-term-outcome-of-highly-myopic-foveoschisis-treated-by-vitrectomy-with-or-without-gas-tamponade
#19
Li-Na Yun, Yi-Qiao Xing
AIM: To evaluate the long-term safety and efficacy of vitrectomy and internal limiting membrane (ILM) peeling with or without gas tamponade for highly myopic foveoschisis. METHODS: We performed an open-label, observer-blinded clinical trial of 85 patients with myopic foveoschisis between 2000 and 2012. Patients were randomly allocated to one of two groups, those who received vitrectomy and ILM peeling without gas tamponade (no-gas group) or those who with gas tamponade (gas group) and follow up at least 5y...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28944174/hypertrophic-obstructive-cardiomyopathy-the-leipzig-experience
#20
Jawad Khalil, Michael Kuehl, Pirose Davierwala, Friedrich Wilhelm Mohr, Martin Misfeld
BACKGROUND: Management of hypertrophic obstructive cardiomyopathy (HOCM) has evolved considerably over the last fifty years, and includes medical treatment as well as septal myectomy (SM) to relief symptoms caused by left ventricular outflow tract obstruction (LVOTO). We report the Leipzig Heart Center experience in the surgical management of patients with HOCM. METHODS: We collected data from all patient treated surgically with a myectomy for LVOTO in patients with HOCM between 1997 and 2016...
July 2017: Annals of Cardiothoracic Surgery
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