keyword
MENU ▼
Read by QxMD icon Read
search

Computer use

keyword
https://www.readbyqxmd.com/read/28528479/accuracy-of-a-new-intraoperative-cone-beam-ct-imaging-technique-artis-zeego-ii-compared-to-postoperative-ct-scan-for-assessment-of-pedicle-screws-placement-and-breaches-detection
#1
Virginie Cordemans, Ludovic Kaminski, Xavier Banse, Bernard G Francq, Olivier Cartiaux
PURPOSE: The goal of this study was to compare the accuracy of a novel intraoperative cone beam computed tomography (CBCT) imaging technique with that of conventional computed tomography (CT) scans for assessment of pedicle screw placement and breach detection. METHODS: Three hundred and forty-eight pedicle screws were inserted in 58 patients between October 2013 and March 2016. All patients had an intraoperative CBCT scan and a conventional CT scan to verify the placement of the screws...
May 20, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28528465/contrast-induced-nephropathy-cin-of-patients-with-renal-dysfunction-in-ct-examination
#2
Yasuhiro Fukushima, Hitomi Miyazawa, Junpei Nakamura, Ayako Taketomi-Takahashi, Takayuki Suto, Yoshito Tsushima
PURPOSE: To investigate the incidence and risk factors of contrast induced nephropathy (CIN) after contrast enhanced (CE) computed tomography (CT) in patients with renal dysfunction. MATERIALS AND METHODS: Two hundred sixteen inpatients with estimated glomerular filtration rates (eGFR) <60 ml/min/1.73 m(2) underwent CE CT using iodine doses of 420 or 480 mg I/kg. Data of all enrolled patients was collected for baseline serum creatinine level (SCr), post-CE CT SCr within 3 days after CE CT, and conditions considered risk factors for CIN [renal dysfunction, contrast media dose, advanced age, diabetes mellitus, no intravenous hydration, cardiac dysfunction (left ventricular ejection fraction <60%) and intensive-care unit (ICU) admission]...
May 20, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/28528461/novel-imaging-using-a-touchless-display-for-computer-assisted-hepato-biliary-surgery
#3
Yukio Oshiro, Kenoki Ohuchida, Toshiyuki Okada, Makoto Hashizume, Nobuhiro Ohkohchi
PURPOSE: We developed a touchless display system that allows the user to control the medical imaging software via hand gestures in the air. We conducted this study to verify the effectiveness of this novel touchless display system as a tool for assisting with surgical imaging. METHODS: The patient's computed tomography (CT) data are generally observed on a display during surgery. The "Dr. aeroTAP" touchless display system was developed to generate virtual mouse events based on the position of one hand...
May 20, 2017: Surgery Today
https://www.readbyqxmd.com/read/28528295/a-machine-learning-graph-based-approach-for-3d-segmentation-of-bruch-s-membrane-opening-from-glaucomatous-sd-oct-volumes
#4
Mohammad Saleh Miri, Michael D Abràmoff, Young H Kwon, Milan Sonka, Mona K Garvin
Bruch's membrane opening-minimum rim width (BMO-MRW) is a recently proposed structural parameter which estimates the remaining nerve fiber bundles in the retina and is superior to other conventional structural parameters for diagnosing glaucoma. Measuring this structural parameter requires identification of BMO locations within spectral domain-optical coherence tomography (SD-OCT) volumes. While most automated approaches for segmentation of the BMO either segment the 2D projection of BMO points or identify BMO points in individual B-scans, in this work, we propose a machine-learning graph-based approach for true 3D segmentation of BMO from glaucomatous SD-OCT volumes...
May 6, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28528255/molecular-structure-second-and-third-order-nonlinear-optical-properties-and-dft-studies-of-a-novel-non-centrosymmetric-chalcone-derivative-2e-3-4-fluorophenyl-1-4-1e-4-fluorophenyl-methylene-amino-phenyl-prop-2-en-1-one
#5
Shivaraj R Maidur, Parutagouda Shankaragouda Patil, Anusha Ekbote, Tze Shyang Chia, Ching Kheng Quah
In the present work, the title chalcone, (2E)-3-(4-fluorophenyl)-1-(4-{[(1E)-(4-fluorophenyl) methylene]amino}phenyl)prop-2-en-1-one (abbreviated as FAMFC), was synthesized and structurally characterized by single-crystal X-ray diffraction. The compound is crystallized in the monoclinic system with non-centrosymmetric space group P21 and hence it satisfies the essential condition for materials to exhibit second-order nonlinear optical properties. The molecular structure was further confirmed by using FT-IR and (1)H NMR spectroscopic techniques...
May 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28528146/prognostic-value-of-coronary-ct-angiography-with-selective-pet-perfusion-imaging-in-coronary-artery-disease
#6
Teemu Maaniitty, Iida Stenström, Jeroen J Bax, Valtteri Uusitalo, Heikki Ukkonen, Sami Kajander, Maija Mäki, Antti Saraste, Juhani Knuuti
OBJECTIVES: The purpose of this study was to evaluate the prognostic value of sequential hybrid imaging strategy in which positron emission tomography (PET) perfusion imaging is performed selectively in patients with suspected obstructive coronary artery disease (CAD) on coronary computed tomography angiography (CTA). BACKGROUND: Coronary CTA is an accurate diagnostic test for excluding obstructive CAD. However, the positive predictive value is suboptimal. METHODS: We investigated 864 consecutive symptomatic patients with intermediate probability of CAD who adhered to the sequential imaging approach...
May 15, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28528016/the-influence-of-humeral-neck-shaft-angle-and-glenoid-lateralization-on-range-of-motion-in-reverse-shoulder-arthroplasty
#7
Birgit S Werner, Jean Chaoui, Gilles Walch
BACKGROUND: Recent developments in reverse shoulder arthroplasty (RSA) have focused on changes in several design-related parameters, including humeral component design, to allow for easier convertibility. Alterations in humeral inclination and offset on shoulder kinematics may have a relevant influence on postoperative outcome. This study used a virtual computer simulation to evaluate the influence of humeral neck shaft angle and glenoid lateralization on range of motion in onlay design RSA...
May 17, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28527967/feasibility-and-safety-of-the-transbronchial-access-tool-for-peripheral-pulmonary-nodule-and-mass
#8
Mark R Bowling, Craig Brown, Carlos J Anciano
BACKGROUND: Navigational bronchoscopy and other imaging modalities have improved the ability to evaluate pulmonary nodules/mass. Many of these lesions are located outside the bronchial airway and are difficult to access even with these devices. The Transbronchial Access Tool (Medtronic, Minneapolis, MN) allows the bronchoscopist to create a pathway from the bronchial airway, across the lung parenchyma, and into the target lesion. We are reporting the feasibility and safety of this new device...
May 17, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527929/new-predictors-of-complications-in-carotid-body-tumor-resection
#9
Gloria Y Kim, Peter F Lawrence, Rameen S Moridzadeh, Kate Zimmerman, Alberto Munoz, Kuauhyama Luna-Ortiz, Gustavo S Oderich, Juan de Francisco, Jorge Ospina, Santiago Huertas, Leonardo R de Souza, Thomas C Bower, Steven Farley, Hugh A Gelabert, Marcus R Kret, E John Harris, Giovanni De Caridi, Francesco Spinelli, Matthew R Smeds, Christos D Liapis, John Kakisis, Anastasios P Papapetrou, Eike S Debus, Christian-A Behrendt, Edgar Kleinspehn, Joshua D Horton, Firas F Mussa, Stephen W K Cheng, Mark D Morasch, Khurram Rasheed, Matthew E Bennett, Jean Bismuth, Alan B Lumsden, Christopher J Abularrage, Alik Farber
OBJECTIVE: This study examined the relationship between two new variables, tumor distance to base of skull (DTBOS) and tumor volume, with complications of carotid body tumor (CBT) resection, including bleeding and cranial nerve injury. METHODS: Patients who underwent CBT resection between 2004 and 2014 were studied using a standardized, multi-institutional database. Demographic, perioperative, and outcomes data were collected. CBT measurements were determined from computed tomography, magnetic resonance imaging, and ultrasound examination...
June 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28527919/mechanisms-of-the-amplifying-pathway-of-insulin-secretion-in-the-%C3%AE-cell
#10
REVIEW
Michael A Kalwat, Melanie Cobb
Pancreatic islet β cells secrete insulin in response to nutrient secretagogues, like glucose, dependent on calcium influx and nutrient metabolism. One of the most intriguing qualities of β cells is their ability to use metabolism to amplify the amount of secreted insulin independent of further alterations in intracellular calcium. Many years studying this amplifying process have shaped our current understanding of β cell stimulus-secretion coupling; yet, the exact mechanisms of amplification have been elusive...
May 17, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28527861/cellular-computational-generalized-neuron-network-for-frequency-situational-intelligence-in-a-multi-machine-power-system
#11
Yawei Wei, Ganesh Kumar Venayagamoorthy
To prevent large interconnected power system from a cascading failure, brownout or even blackout, grid operators require access to faster than real-time information to make appropriate just-in-time control decisions. However, the communication and computational system limitations of currently used supervisory control and data acquisition (SCADA) system can only deliver delayed information. However, the deployment of synchrophasor measurement devices makes it possible to capture and visualize, in near-real-time, grid operational data with extra granularity...
April 4, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/28527853/influence-of-intracanal-materials-in-vertical-root-fracture-pathway-detection-with-cone-beam-computed-tomography
#12
Kamile Leonardi Dutra, Camila Pachêco-Pereira, Eduardo Antunes Bortoluzzi, Carlos Flores-Mir, Manuel O Lagravère, Márcio Corrêa
INTRODUCTION: Investigating the vertical root fracture (VRF) pathway under different clinical scenarios may help to diagnose this condition properly. We aimed to determine the capability and intrareliability of VRF pathway detection through cone-beam computed tomographic (CBCT) imaging as well as analyze the influence of different intracanal and crown materials. METHODS: VRFs were mechanically induced in 30 teeth, and 4 clinical situations were reproduced in vitro: no filling, gutta-percha, post, and metal crown...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527848/combined-therapy-for-a-rare-case-of-type-iii-dens-invaginatus-in-a-mandibular-central-incisor-with-a-periapical-lesion-a-case-report
#13
Ping Zhang, Xin Wei
Type III dens invaginatus has a complex root canal structure that poses a greater challenge when endodontic treatment is necessary. Type III dens invaginatus rarely affects mandibular central incisors. In this case, we reported a combined therapy of type III dens invaginatus in a mandibular central incisor with a periapical lesion. Cone-beam computed tomographic (CBCT) imaging was used in the diagnosis and management of the unusual anatomy of dens invaginatus. First, the hard tissue of the dens invaginatus was removed using a dental operating microscope...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527842/diagnostic-accuracy-of-periapical-radiography-and-cone-beam-computed-tomography-in-identifying-root-canal-configuration-of-human-premolars
#14
Thiago Oliveira Sousa, Francisco Haiter-Neto, Eduarda Helena Leandro Nascimento, Leonardo Vieira Peroni, Deborah Queiroz Freitas, Bassam Hassan
INTRODUCTION: The aim of this study was to assess the diagnostic accuracy of periapical radiography (PR) and cone-beam computed tomographic (CBCT) imaging in the detection of the root canal configuration (RCC) of human premolars. METHODS: PR and CBCT imaging of 114 extracted human premolars were evaluated by 2 oral radiologists. RCC was recorded according to Vertucci's classification. Micro-computed tomographic imaging served as the gold standard to determine RCC...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527841/a-comparison-of-2-and-3-dimensional-healing-assessment-after-endodontic-surgery-using-cone-beam-computed-tomographic-volumes-or-periapical-radiographs
#15
Tom Schloss, David Sonntag, Meetu R Kohli, Frank C Setzer
INTRODUCTION: The aim of this study was to compare the assessment of healing after endodontic microsurgery using 2-dimensional (2D) periapical films versus 3-dimensional (3D) cone-beam computed tomographic (CBCT) imaging. METHODS: The healing of 51 teeth from 44 patients was evaluated using Molven's criteria (2D) and modified PENN 3D criteria. The absolute area (2D) and volume (3D) changes of apical lesions preoperatively and at follow-up were calculated by segmentation using OsiriX software (Pixmeo, Bernex, Switzerland) and ITK-Snap (free software)...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28527809/accuracy-of-genomic-predictions-in-gyr-bos-indicus-dairy-cattle
#16
S A Boison, A T H Utsunomiya, D J A Santos, H H R Neves, R Carvalheiro, G Mészáros, Y T Utsunomiya, A S do Carmo, R S Verneque, M A Machado, J C C Panetto, J F Garcia, J Sölkner, M V G B da Silva
Genomic selection may accelerate genetic progress in breeding programs of indicine breeds when compared with traditional selection methods. We present results of genomic predictions in Gyr (Bos indicus) dairy cattle of Brazil for milk yield (MY), fat yield (FY), protein yield (PY), and age at first calving using information from bulls and cows. Four different single nucleotide polymorphism (SNP) chips were studied. Additionally, the effect of the use of imputed data on genomic prediction accuracy was studied...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527788/taking-control-structural-and-behavioural-plasticity-in-response-to-game-based-inhibition-training-in-older-adults
#17
Simone Kühn, Robert C Lorenz, Markus Weichenberger, Maxi Becker, Marten Haesner, Julie O'Sullivan, Anika Steinert, Elisabeth Steinhagen-Thiessen, Susanne Brandhorst, Thomas Bremer, Jürgen Gallinat
While previous attempts to train self-control in humans have frequently failed, we set out to train response inhibition using computer-game elements. We trained older adults with newly developed game-based inhibition training on a tablet for two months and compared them to an active and passive control group. Behavioural effects reflected in shorter stop signal response times were observed only in the inhibition-training group. This was accompanied by structural growth of right inferior frontal gyrus (rIFG) triangularis cortical thickness, a brain region that has been associated with response inhibition...
May 17, 2017: NeuroImage
https://www.readbyqxmd.com/read/28527731/the-effect-of-activities-of-daily-living-on-the-self-care-agency-of-patients-in-a-cardiovascular-surgery-clinic
#18
Papatya Karakurt, Necla Kasimoğlu, Aybike Bahçeli, Sebahat Atalikoğlu Başkan, Burcu Ağdemir
Cardiovascular diseases are the leading cause of death globally, and nurses have a crucial role in informing cardiovascular disease patients about their diseases. The aim of the present study was to identify the effect of activities of daily living on the self-care agency of patients in a cardiovascular surgery clinic. This descriptive study was conducted between June 2014 and January 2015 with 180 patients hospitalized in the cardiovascular surgery clinic of a university hospital in the province of Erzincan in the Eastern region of Turkey...
June 2017: Journal of Vascular Nursing: Official Publication of the Society for Peripheral Vascular Nursing
https://www.readbyqxmd.com/read/28527626/the-impact-of-economic-conditions-on-the-disablement-process-a-markov-transition-approach-using-share-data
#19
Y Arrighi, T Rapp, N Sirven
A growing number of studies underline the relationship between socioeconomic status and health at older ages. Following that literature, we explore the impact of economic conditions on changes in functional health overtime. Frailty, a state of physiological instability, has been identified in the public health literature as a candidate for disability prevention but received little attention from health economists. Using SHARE panel data, respondents aged 50 and over from ten European countries were categorised as robust, frail and dependent...
May 10, 2017: Health Policy
https://www.readbyqxmd.com/read/28527594/whole-globe-biomechanics-using-high-field-mri
#20
Andrew P Voorhees, Leon C Ho, Ning-Jiun Jan, Huong Tran, Yolandi van der Merwe, Kevin Chan, Ian A Sigal
The eye is a complex structure composed of several interconnected tissues acting together, across the whole globe, to resist deformation due to intraocular pressure (IOP). However, most work in the ocular biomechanics field only examines the response to IOP over smaller regions of the eye. We used high-field MRI to measure IOP induced ocular displacements and deformations over the whole globe. Seven sheep eyes were obtained from a local abattoir and imaged within 48 h using MRI at multiple levels of IOP. IOP was controlled with a gravity perfusion system and a cannula inserted into the anterior chamber...
May 17, 2017: Experimental Eye Research
keyword
keyword
42936
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"