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https://www.readbyqxmd.com/read/28637820/dynamic-mechanisms-of-visually-guided-3d-motion-tracking
#1
Kathryn L Bonnen, Alexander C Huk, Lawrence Kevin Cormack
The continuous perception of motion-through-depth is critical both for navigation and interacting with objects in a dynamic three dimensional (3D) world. Here we used 3D tracking to simultaneously assess the perception of motion in all directions, facilitating comparisons of responses to motion-through-depth to frontoparallel motion. Observers manually tracked a stereoscopic target as it moved in a 3D Brownian random walk. We found that continuous tracking of motion-through-depth was selectively impaired, showing different spatiotemporal properties compared to frontoparallel motion tracking...
June 21, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28626978/a-fast-multi-target-inverse-treatment-planning-strategy-optimizing-dosimetric-measures-for-high-dose-rate-hdr-brachytherapy
#2
Christian V Guthier, Antonio L Damato, Akila N Viswanathan, Juergen W Hesser, Robert A Cormack
PURPOSE: In this study, we introduce a novel, fast, inverse treatment planning strategy for interstitial high-dose-rate (HDR) brachytherapy with multiple regions of interest solely based on dose-volume-histogram-related dosimetric measures (DMs). METHODS: We present a new problem formulation of the objective function that approximates the indicator variables of the standard DM optimization problem with a smooth logistic function. This problem is optimized by standard gradient-based methods...
June 19, 2017: Medical Physics
https://www.readbyqxmd.com/read/28620866/high-levels-of-igf-1-predict-difficult-intubation-of-patients-with-acromegaly
#3
Yu Zhang, Xiaopeng Guo, Lijian Pei, Zhuhua Zhang, Gang Tan, Bing Xing
PURPOSE: To investigate the characteristics of difficult intubation and identify novel efficient predictors in patients with acromegaly. METHODS: Patients with either untreated acromegaly or non-functional pituitary adenomas were enrolled. Patients with acromegaly underwent hormone assays, upper airway computed tomography and magnetic resonance imaging examinations and preoperative overnight polysomnography. The modified Mallampati classification, mouth opening, neck circumference, and neck extension were assessed, and the Cormack-Lehane grades and the time of tracheal intubation were recorded...
June 15, 2017: Endocrine
https://www.readbyqxmd.com/read/28607336/cervical-spine-motion-during-tracheal-intubation-with-king-visiontm-video-laryngoscopy-and-conventional-laryngoscopy-a-crossover-randomized-study
#4
Mohamed R El-Tahan, Samah El Kenany, Alaa M Khidr, Abdulmohsen A Al Ghamdi, Ahmed M Tawfik, Abdullah S Al Mulhim
BACKGROUND: The King VisonTM (KVL) videolaryngoscope with a wide field of view could potentially reduce cervical spine motion during intubation. We aimed to compare the extent of cervical spine movement during laryngoscopy using the KVL and Macintosh laryngoscopes. METHODS: Following ethical approval, 29 patients with a normal cervical spine requiring general anesthesia and tracheal intubation were randomly subjected to both KVL and Macintosh laryngoscopy in a crossover...
June 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28588178/assessment-of-difficulties-associated-with-endotracheal-intubation-using-modified-mallampati-and-upper-lip-bite-test
#5
D Banik, L Ray, A K Akhtaruzzaman, D K Bhowmick, M S Hossain, M S Islam, M F Haque
This study was aimed at finding the parameters for prediction of difficulty in endotracheal intubation, that are easy to examine and that could better predict difficulty. The current observational prospective, cross sectional study was conducted in the department of Anaesthesia, Analgesia and Intensive Care Medicine, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from March 2015 to September 2015 comprising 180 patient of both sexes requiring endotracheal intubation were arranged into two groups, Group A: Modified Mallampati test Group and Group B: Modified Mallampati & upper lip bite test group (combined) Assessment of difficulty in intubation was done by Cormack & Lehane direct Laryngoscopic grading...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28581411/computerized-system-for-safety-verification-of-external-beam-radiation-therapy-planning
#6
Clay Holdsworth, Jacek Kukluk, Christina Molodowitch, Maria Czerminska, Cindy Hancox, Robert A Cormack, Kevin Beaudette, Joseph H Killoran
PURPOSE: To report an assessment of in-house software, Verifier, developed to improve efficacy and efficiency of the radiation therapy (RT) treatment planning process and quality control review (QCR). METHODS AND MATERIALS: Radiation therapy plan parameters retrieved from our treatment planning database are used by automated tests to give 75 types of warnings, such as prescription and plan discrepancies. The software is continuously updated on the basis of new issues, ideas, and planning policies...
July 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28577883/corrigendum-to-comparison-of-outcomes-for-mr-guided-versus-ct-guided-high-dose-rate-interstitial-brachytherapy-in-women-with-locally-advanced-carcinoma-of-the-cervix-gynecol-oncol-145-2017-284-290
#7
Sophia C Kamran, Matthias M Manuel, Linda P Cho, Antonio L Damato, Ehud J Schmidt, Clare Tempany, Robert A Cormack, Akila N Viswanathan
No abstract text is available yet for this article.
May 31, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28564686/bayesian-depth-estimation-from-monocular-natural-images
#8
Che-Chun Su, Lawrence K Cormack, Alan C Bovik
Estimating an accurate and naturalistic dense depth map from a single monocular photographic image is a difficult problem. Nevertheless, human observers have little difficulty understanding the depth structure implied by photographs. Two-dimensional (2D) images of the real-world environment contain significant statistical information regarding the three-dimensional (3D) structure of the world that the vision system likely exploits to compute perceived depth, monocularly as well as binocularly. Toward understanding how this might be accomplished, we propose a Bayesian model of monocular depth computation that recovers detailed 3D scene structures by extracting reliable, robust, depth-sensitive statistical features from single natural images...
May 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28539007/videolaryngoscopy-versus-direct-laryngoscopy-for-tracheal-intubation-in-children-excluding-neonates
#9
REVIEW
Ibtihal S Abdelgadir, Robert S Phillips, Davinder Singh, Michael P Moncreiff, Joanne L Lumsden
BACKGROUND: Direct laryngoscopy is the method currently used for tracheal intubation in children. It occasionally offers unexpectedly poor laryngeal views. Indirect laryngoscopy involves visualizing the vocal cords by means other than obtaining a direct sight, with the potential to improve outcomes. We reviewed the current available literature and performed a meta-analysis to compare direct versus indirect laryngoscopy, or videolaryngoscopy, with regards to efficacy and adverse effects...
May 24, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28527873/comparison-of-xenon-with-led-illuminant-in-difficult-and-inhalation-injury-airway-scenario-a-randomized-crossover-manikin-study
#10
Andreas Moritz, Johannes Prottengeier, Joachim Schmidt
PURPOSE: The purpose of this study was to compare the effectiveness of a Xenon halogen with a light-emitting diode (LED) laryngoscope light handle in a difficult airway scenario, as well as in an inhalation injury airway scenario that combines a difficult airway and a limited view. METHODS: We recruited forty-two anesthetists into a randomized crossover trial. Each performed tracheal intubation (TI) with a Xenon halogen and a LED light handle in the two manikin scenarios...
May 8, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28525401/glidescope-versus-airtraq-dl-for-double-lumen-tracheal-tube-insertion-in-patients-with-a-predicted-or-known-difficult-airway-a-randomised-study
#11
Olivier Belze, Evan Lepage, Yvan Bazin, Pierre Kerourin, Jacques Fusciardi, Francis Remérand, Fabien Espitalier
BACKGROUND: Double-lumen tracheal tube (DLT) insertion can be managed with videolaryngoscopes such as the Glidescope or indirect laryngoscopes like the Airtraq DL. No study has compared both devices when a difficult intubation is predicted. OBJECTIVE: Our hypothesis was that the Glidescope is superior to the Airtraq for double-lumen tube insertion in patients with a predicted or known difficult airway. DESIGN: Randomised study. PATIENTS: Adults scheduled for thoracic elective surgery, requiring one-lung ventilation with a predicted difficult intubation score of at least 7 (Arné risk index)...
July 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28515522/comparison-of-airtraq%C3%A2-mccoy%C3%A2-and-macintosh-laryngoscopes-for-endotracheal-intubation-in-patients-with-cervical-spine-immobilisation-a-randomised-clinical-trial
#12
Vinod Hosalli, B K Arjun, Uday Ambi, Shivanand Hulakund
BACKGROUND AND AIMS: The study aimed at comparing the performance of the novel optical Airtraq™ laryngoscope with the McCoy™ and conventional Macintosh laryngoscopes for ease of endotracheal intubation in patients with neck immobilisation using manual inline axial cervical spine stabilisation (MIAS) technique. METHODS: Ninety consenting American Society of Anaesthesiologist's physical status I-II patients, aged 18-60 years, scheduled for various surgeries requiring tracheal intubation were randomly assigned into three groups of thirty each to undergo intubation with Macintosh, Airtraq™, or McCoy™ laryngoscope with neck immobilisation by MIAS technique...
April 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28500233/nanoformulation-of-olaparib-amplifies-parp-inhibition-and-sensitizes-pten-tp53-deficient-prostate-cancer-to-radiation
#13
Anne L van de Ven, Shifalika Tangutoori, Paige Baldwin, Ju Qiao, Codi Gharagouzloo, Nina Seitzer, John G Clohessy, G Mike Makrigiorgos, Robert Cormack, Pier Paolo Pandolfi, Srinivas Sridhar
The use of PARP inhibitors in combination with radiation therapy is a promising strategy to locally enhance DNA-damage in tumors. Here we show that radiation-resistant cells and tumors derived from a Pten/Trp53-deficient mouse model of advanced prostate cancer are rendered radiation-sensitive following treatment with NanoOlaparib, a lipid-based injectable nanoformulation of Olaparib. This enhancement in radiosensitivity is accompanied by radiation dose-dependent changes in γ-H2AX expression and is specific to NanoOlaparib alone...
May 12, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28487139/a-multicenter-randomized-trial-of-ramped-position-versus-sniffing-position-during-endotracheal-intubation-of-critically-ill-adults
#14
Matthew W Semler, David R Janz, Derek W Russell, Jonathan D Casey, Robert J Lentz, Aline N Zouk, Bennett P deBoisblanc, Jairo I Santanilla, Yasin A Khan, Aaron M Joffe, William S Stigler, Todd W Rice
BACKGROUND: Hypoxemia is the most common complication during endotracheal intubation of critically ill adults. Intubation in the ramped position has been hypothesized to prevent hypoxemia by increasing functional residual capacity and decreasing the duration of intubation, but has never been studied outside of the operating room. METHODS: Multicenter, randomized trial comparing ramped position (head of the bed elevated to 25 degrees) to sniffing position (torso supine, neck flexed, head extended) among 260 adults undergoing endotracheal intubation by Pulmonary and Critical Care Medicine fellows in four intensive care units between July 22, 2015 and July 19, 2016...
May 6, 2017: Chest
https://www.readbyqxmd.com/read/28479280/pelagic-and-benthic-communities-of-the-antarctic-ecosystem-of-potter-cove-genomics-and-ecological-implications
#15
REVIEW
D Abele, S Vazquez, A G J Buma, E Hernandez, C Quiroga, C Held, S Frickenhaus, L Harms, J L Lopez, E Helmke, W P Mac Cormack
Molecular technologies are more frequently applied in Antarctic ecosystem research and the growing amount of sequence-based information available in databases adds a new dimension to understanding the response of Antarctic organisms and communities to environmental change. We apply molecular techniques, including fingerprinting, and amplicon and metagenome sequencing, to understand biodiversity and phylogeography to resolve adaptive processes in an Antarctic coastal ecosystem from microbial to macrobenthic organisms and communities...
June 2017: Marine Genomics
https://www.readbyqxmd.com/read/28445110/normobaric-hypoxia-increases-the-growth-hormone-response-to-maximal-resistance-exercise-in-trained-men
#16
Dean Filopoulos, Stuart J Cormack, Douglas G Whyte
This study examined the effect of hypoxia on growth hormone (GH) release during an acute bout of high-intensity, low-volume resistance exercise. Using a single-blinded, randomised crossover design, 16 resistance-trained males completed two resistance exercise sessions in normobaric hypoxia (HYP; inspiratory oxygen fraction, (FiO2) 0.12, arterial oxygen saturation (SpO2) 82 ± 2%) and normoxia (NOR; FiO2 0.21, SpO2 98 ± 0%). Each session consisted of five sets of three repetitions of 45° leg press and bench press at 85% of one repetition maximum...
August 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28443579/determining-the-efficiency-of-different-preoperative-difficult-intubation-tests-on-patients-undergoing-caesarean-section
#17
İlker Yıldırım, Mehmet Turan İnal, Dilek Memiş, F Nesrin Turan
BACKGROUND: Pregnancy induced anatomical and physiological changes in the airway makes airway management difficult in obstetric patients, thus the preoperative evaluation of the airway is important for obstetric patients. AIMS: The first aim was determine the effectiveness of the modified mallampati test, the interincisor, sternomental, thyromental distances, the upper limb bite tests and the second aim was to access the effectiveness of the combination of the upper limb bite test with the other tests in obstetric patients...
April 13, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28443560/advances-in-nutrition-of-the-newborn-infant
#18
REVIEW
Jane E Harding, Barbara E Cormack, Tanith Alexander, Jane M Alsweiler, Frank H Bloomfield
Nutrition of newborn infants, particularly of those born preterm, has advanced substantially in recent years. Extremely preterm infants have high nutrient demands that are challenging to meet, such that growth faltering is common. Inadequate growth is associated with poor neurodevelopmental outcomes, and although improved early growth is associated with better cognitive outcomes, there might be a trade-off in terms of worse metabolic outcomes, although the contribution of early nutrition to these associations is not established...
April 22, 2017: Lancet
https://www.readbyqxmd.com/read/28422546/competition-sleep-is-not-compromised-compared-to-habitual-in-elite-australian-footballers
#19
Benita J Lalor, Shona L Halson, Jacquie Tran, Justin G Kemp, Stuart J Cormack
PURPOSE: To assess the impact of match start time and days relative to match compared to the habitual sleep characteristics of elite Australian Football (AF) players. METHODS: 45 elite male AF players were assessed during the pre-season (habitual) and across four home matches during the season. Players wore an activity monitor the night before (-1), night of (0), one night after (+1), and two nights (+2) after each match and completed a self-reported rating of sleep quality...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28412838/self-reported-sleep-complaints-are-associated-with-adverse-health-outcomes-cross-sectional-analysis-of-the-2002-03-new-zealand-health-survey
#20
Sarah-Jane Paine, Ricci Harris, Donna Cormack, James Stanley
OBJECTIVE: The aim was to investigate the prevalence of self-reported sleep complaints in New Zealand adults and determine the independent association of sleep complaints with adverse health outcomes. DESIGN: We used 2002/03 New Zealand Health Survey data (n = 12,500 adults, ≥15 years). The prevalence of self-reported sleep complaints was estimated by ethnicity. The relationship between sleep complaints and mental health, physical health and health risk behaviors were investigated using multivariable logistic regression models...
April 15, 2017: Ethnicity & Health
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