keyword
MENU ▼
Read by QxMD icon Read
search

Operant learning

keyword
https://www.readbyqxmd.com/read/28212138/deep-learning-in-mammography-diagnostic-accuracy-of-a-multipurpose-image-analysis-software-in-the-detection-of-breast-cancer
#1
Anton S Becker, Magda Marcon, Soleen Ghafoor, Moritz C Wurnig, Thomas Frauenfelder, Andreas Boss
OBJECTIVES: The aim of this study was to evaluate the diagnostic accuracy of a multipurpose image analysis software based on deep learning with artificial neural networks for the detection of breast cancer in an independent, dual-center mammography data set. MATERIALS AND METHODS: In this retrospective, Health Insurance Portability and Accountability Act-compliant study, all patients undergoing mammography in 2012 at our institution were reviewed (n = 3228). All of their prior and follow-up mammographies from a time span of 7 years (2008-2015) were considered as a reference for clinical diagnosis...
February 16, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28209701/patient-and-citizen-innovation-council-in-family-practice
#2
Ron T Garnett, Jane Bowman, Joanne Ganton
PROBLEM ADDRESSED: Patient engagement is integral to the Patient's Medical Home model. Patient-centred care is more than what happens in the examination room. Decisions around clinic processes, work flow, and initiative prioritization also warrant a patient perspective. OBJECTIVE OF PROGRAM: The Academic Family Medicine Clinic at the South Health Campus in Calgary, Alta, identified a need for patient and community advisory expertise regarding clinic initiatives and quality improvement...
February 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28209192/learning-from-2523-trauma-deaths-in-india-opportunities-to-prevent-in-hospital-deaths
#3
Nobhojit Roy, Deepa Kizhakke Veetil, Monty Uttam Khajanchi, Vineet Kumar, Harris Solomon, Jyoti Kamble, Debojit Basak, Göran Tomson, Johan von Schreeb
BACKGROUND: A systematic analysis of trauma deaths is a step towards trauma quality improvement in Indian hospitals. This study estimates the magnitude of preventable trauma deaths in five Indian hospitals, and uses a peer-review process to identify opportunities for improvement (OFI) in trauma care delivery. METHODS: All trauma deaths that occurred within 30 days of hospitalization in five urban university hospitals in India were retrospectively abstracted for demography, mechanism of injury, transfer status, injury description by clinical, investigation and operative findings...
February 16, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28205307/segmentation-of-organs-at-risks-in-head-and-neck-ct-images-using-convolutional-neural-networks
#4
Bulat Ibragimov, Lei Xing
PURPOSE: Accurate segmentation of organs-at-risks (OARs) is the key step for efficient planning of radiation therapy for head and neck (HaN) cancer treatment. In the work, we proposed the first deep learning-based algorithm, for segmentation of OARs in HaN CT images, and compared its performance against state-of-the-art automated segmentation algorithms, commercial software, and interobserver variability. METHODS: Convolutional neural networks (CNNs)-a concept from the field of deep learning-were used to study consistent intensity patterns of OARs from training CT images and to segment the OAR in a previously unseen test CT image...
February 2017: Medical Physics
https://www.readbyqxmd.com/read/28205186/optimisation-of-cognitive-performance-in-rodent-operant-touchscreen-testing-evaluation-and-effects-of-reinforcer-strength
#5
Benjamin U Phillips, Christopher J Heath, Zofia Ossowska, Timothy J Bussey, Lisa M Saksida
Operant testing is a widely used and highly effective method of studying cognition in rodents. Performance on such tasks is sensitive to reinforcer strength. It is therefore advantageous to select effective reinforcers to minimize training times and maximize experimental throughput. To quantitatively investigate the control of behavior by different reinforcers, performance of mice was tested with either strawberry milkshake or a known powerful reinforcer, super saccharin (1.5% or 2% (w/v) saccharin/1.5% (w/v) glucose/water mixture)...
February 15, 2017: Learning & Behavior
https://www.readbyqxmd.com/read/28205035/serial-improvement-of-quality-metrics-in-pediatric-thoracoscopic-lobectomy-for-congenital-lung-malformation-an-analysis-of-learning-curve
#6
Samina Park, Eung Re Kim, Yoohwa Hwang, Hyun Joo Lee, In Kyu Park, Young Tae Kim, Chang Hyun Kang
Video-assisted thoracic surgery (VATS) pulmonary resection in children is a technically demanding procedure that requires a relatively long learning period. This study aimed to evaluate the serial improvement of quality metrics according to case volume experience in pediatric VATS pulmonary resection of congenital lung malformation (CLM). Methods VATS anatomical resection in CLM was attempted in 200 consecutive patients. The learning curve for the operative time was modeled by cumulative sum analysis. Quality metrics were used to measure technical achievement and efficiency outcomes...
February 15, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28203416/learning-curve-and-established-phase-for-uniportal-vats-lobectomies-the-papworth-experience
#7
Benedetta Bedetti, Luca Bertolaccini, Piergiorgio Solli, Marco Scarci
BACKGROUND: Uniportal video-assisted thoracoscopy (VATS) has increasingly gained importance in the thoracic surgery scenario. The use of this technique can reduce postoperative pain and length of stay and gives the surgeon the same operative perspective as open surgery. METHODS: We retrospectively analysed the data of 73 patients who underwent uniportal VATS lobectomies from November 2014 to December 2015 in our institution. We divided the patients in two groups (group 1: first 30 patients vs...
January 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28203055/resident-surgeon-efficiency-in-femtosecond-laser-assisted-cataract-surgery
#8
Andrew C Pittner, Brian R Sullivan
PURPOSE: Comparison of resident surgeon performance efficiencies in femtosecond laser-assisted cataract surgery (FLACS) versus conventional phacoemulsification. PATIENTS AND METHODS: A retrospective cohort study was conducted on consecutive patients undergoing phacoemulsification cataract surgery performed by senior ophthalmology residents under the supervision of 1 attending physician during a 9-month period in a large Veterans Affairs medical center. Medical records were reviewed for demographic information, preoperative nucleus grade, femtosecond laser pretreatment, operative procedure times, total operating room times, and surgical complications...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28199479/when-and-where-learning-is-taking-place-multisynaptic-changes-in-strength-during-different-behaviors-related-to-the-acquisition-of-an-operant-conditioning-task-by-behaving-rats
#9
Iván Fernández-Lamo, José M Delgado-García, Agnès Gruart
No abstract text is available yet for this article.
February 14, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28197870/intravascular-ultrasound-guidance-of-percutaneous-coronary-intervention-in-ostial-chronic-total-occlusions-a-description-of-the-technique-and-procedural-results
#10
Nicola Ryan, Nieves Gonzalo, Philip Dingli, Oscar Vedia Cruz, Pilar Jiménez-Quevedo, Luis Nombela-Franco, Ivan Nuñez-Gil, María Del Trigo, Pablo Salinas, Carlos Macaya, Antonio Fernandez-Ortiz, Javier Escaned
Inability to cross the lesion with a guidewire is the most common reason for failure in percutaneous revascularization (PCI) of chronic total occlusions (CTOs). An ostial or stumpless CTO is an acknowledged challenge for CTO recanalization due to difficulty in successful wiring. IVUS imaging provides the opportunity to visualize the occluded vessel and to aid guidewire advancement. We review the value of this technique in a single-centre experience of CTO PCI. This series involves 22 patients who underwent CTO-PCI using IVUS guidance for stumpless CTO wiring at our institution...
February 14, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28197083/balb-c-mice-can-learn-touchscreen-visual-discrimination-and-reversal-tasks-faster-than-c57bl-6-mice
#11
Karly M Turner, Christopher G Simpson, Thomas H J Burne
Touchscreen technology is increasingly being used to characterize cognitive performance in rodent models of neuropsychiatric disorders. Researchers are attracted to the automated system and translational potential for touchscreen-based tasks. However, training time is extensive and some mouse strains have struggled to learn touchscreen tasks. Here we compared the performance of commonly used C57BL/6 mice against the BALB/c mice, which are considered a poor performing strain, using a touchscreen task. BALB/c and C57BL/6 mice were trained to operate the touchscreens before learning a visual discrimination (VD) and reversal task...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28197082/the-role-of-acetaldehyde-in-the-increased-acceptance-of-ethanol-after-prenatal-ethanol-exposure
#12
Mirari Gaztañaga, Asier Angulo-Alcalde, Norman E Spear, M Gabriela Chotro
Recent studies show that acetaldehyde, the first metabolite in the oxidation of ethanol, can be responsible for both, the appetitive and the aversive effects produced by ethanol intoxication. More specifically, it has been hypothesized that acetaldehyde produced in the periphery by the liver is responsible for the aversive effects of ethanol, while the appetitive effects relate to the acetaldehyde produced centrally through the catalase system. On the other hand, from studies in our and other laboratories, it is known that ethanol exposure during the last gestational days (GD) consistently enhances the postnatal acceptance of ethanol when measured during early ontogeny in the rat...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28197029/stepwise-case-selection-using-guy-s-stone-score-reduces-complications-during-percutaneous-nephrolithotomy-training
#13
Jiten Jaipuria, Manav Suryavanshi, Amitsinh P Desai, Sanjay Goyal, Kaushal Patel, Sandip S Parhad, Santosh K Subudhi, Chandrashekar V Rao, Satish P Kumar, Tridib K Sen
INTRODUCTION: Traditional percutaneous nephrolithotomy (PCNL) training involved subjective award of cases to the trainee. We restructured this according to the Guy's stone score (GSS) such that each trainee stepwise completed 25 cases of each grade before progressing. This study compares the outcomes of training with traditional versus stepwise approach. METHODS: Four hundred consecutive cases equally distributed for two trainees in each group were compared in terms of complications (Clavien-Dindo), stone free rate (SFR), operative and fluoroscopy time...
January 2017: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/28196627/environmental-enrichment-enhances-cognitive-flexibility-in-c57bl-6-mice-on-a-touchscreen-reversal-learning-task
#14
Ariel Zeleznikow-Johnston, Emma L Burrows, Thibault Renoir, Anthony J Hannan
Environmental enrichment (EE) is any positive modification of the 'standard housing' (SH) conditions in which laboratory animals are typically held, usually involving increased opportunity for cognitive stimulation and physical activity. EE has been reported to enhance baseline performance of wild-type animals on traditional cognitive behavioural tasks. Recently, touchscreen operant testing chambers have emerged as a way of performing rodent cognitive assays, providing greater reproducibility, translatability and automatability...
February 11, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28195646/ns1209-spd-502-a-novel-selective-ampa-antagonist-for-stroke-neuropathic-pain-or-epilepsy-drug-development-lessons-learned
#15
Jan M Keppel Hesselink
Preclinical Research The selective AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor antagonist, NS1209 (also known as SPD 502) has been explored in several research and development campaigns since its selection as a lead drug candidate in the early 1990s by the Danish biotechnology company, NeuroSearch. The compound was successively tested in animal models of stroke, neuropathic pain and epilepsy. The preclinical data to support development for the treatment of stroke were incomplete, as the compound was administered after the stroke episode, and did not protect subcortical areas of the brain...
February 13, 2017: Drug Development Research
https://www.readbyqxmd.com/read/28194637/robotic-assisted-laparoscopy-in-reproductive-surgery-a-contemporary-review
#16
REVIEW
Jayapriya Jayakumaran, Sejal D Patel, Bhushan K Gangrade, Deepa Maheswari Narasimhulu, Soundarya Ramanatha Pandian, Celso Silva
Robotic surgery is a conceptual fusion of the conventional open surgery and the minimally invasive laparoscopic surgery. We reviewed the current role of robotic-assisted laparoscopy in the field of reproductive surgery by a literature search in PubMed database. We analyzed the reported advantages and limitations of the use of robotics in reproductive surgeries like myomectomy, tubal reanastomosis, endometriosis, ovarian tissue cryopreservation, and ovarian transposition. Overall, robotic assistance in reproductive surgery resulted in decreased blood loss, less post-operative pain, shorter hospital stay, and faster convalescence, whereas reproductive outcomes were similar to open/laparoscopic approaches...
February 14, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28194595/double-balloon-colonoscopy-has-a-higher-cecal-intubation-rate-than-conventional-colonoscopy-using-a-colon-simulator
#17
Keijiro Sunada, Satoshi Shinozaki, Tomonori Yano, Yoshikazu Hayashi, Hirotsugu Sakamoto, Alan Kawarai Lefor, Hironori Yamamoto
BACKGROUND/AIM: Cecal intubation using conventional colonoscopy (CC) requires substantial training. We hypothesized that double-balloon colonoscopy (DBC) facilitates cecal intubation by endoscopy naïve operators. The aim of this study is to evaluate the cecal intubation rate and learning curve of DBC compared with CC. METHODS: Eighteen endoscopy naïve medical students were allocated to two groups and attempted cecal intubation within 20 min using a colon simulator...
February 13, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28190709/training-in-minimally-invasive-pancreatic-resections-a-paradigm-shift-away-from-see-one-do-one-teach-one
#18
Melissa E Hogg, Marc G Besselink, Pierre-Alain Clavien, Abe Fingerhut, D Rohan Jeyarajah, David A Kooby, A James Moser, Henry A Pitt, Oliver A Varban, Charles M Vollmer, Herbert J Zeh, Paul Hansen
BACKGROUND: Increased incorporation of minimally invasive pancreatic resections (MIPR) has emerged into hepato-pancreato-biliary practice, however, no standardization exists for its safe adoption. Novel strategies are presented for dissemination of safe MIPR. METHODS: An international State-of-the-Art conference evaluating multiple aspects of MIPR was conducted by a panel of pancreas experts in Sao Paulo, Brazil on April 20, 2016. Training and education issues were discussed regarding the introduction of novel strategies for safe dissemination of MIPR...
February 9, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28190372/training-performance-of-laparoscopic-surgery-in-two-and-three-dimensional-displays
#19
Chiuhsiang Joe Lin, Chih-Feng Cheng, Hung-Jen Chen, Kuan-Ying Wu
INTRODUCTION: This research investigated differences in the effects of a state-of-art stereoscopic 3-dimensional (3D) display and a traditional 2-dimensional (2D) display in simulated laparoscopic surgery over a longer duration than in previous publications and studied the learning effects of the 2 display systems on novices. METHODS: A randomized experiment with 2 factors, image dimensions and image sequence, was conducted to investigate differences in the mean movement time, the mean error frequency, NASA-TLX cognitive workload, and visual fatigue in pegboard and circle-tracing tasks...
February 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28190371/occupational-radiation-exposure-of-anesthesia-providers
#20
Rachel R Wang, Amanda H Kumar, Pedro Tanaka, Alex Macario
Anesthesia providers are frequently exposed to radiation during routine patient care in the operating room and remote anesthetizing locations. Eighty-two percent of anesthesiology residents (n = 57 responders) at our institution had a "high" or "very high" concern about the level of ionizing radiation exposure, and 94% indicated interest in educational materials about radiation safety. This article highlights key learning points related to basic physical principles, effects of ionizing radiation, radiation exposure measurement, occupational dose limits, considerations during pregnancy, sources of exposure, factors affecting occupational exposure such as positioning and shielding, and monitoring...
February 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
keyword
keyword
9066
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"