keyword
MENU ▼
Read by QxMD icon Read
search

Reliability

keyword
https://www.readbyqxmd.com/read/28325018/imquant-an-image-based-fluorescence-reader-for-quantitative-lateral-flow-immunoassays
#1
Kaushik Basak Chowdhury, Jayaraj Joseph, Jayaraman Kiruthi Vasan, Mohanasankar Sivaprakasam
Fluorescence immunoassays (FIA) have strong potential in enabling rapid quantitative immunological testing at point of care. Existing state of the art instruments employ laser scanning of FIA test kits, which require the use of electromechanical systems, making the instrument bulky, heavy and less reliable in the long term. There is a growing need for an extremely compact and reliable, motion-free, automated reader for accurate quantification of immunoassays. Here, we present ImQuant, an image based FIA reader with integrated monochromatic excitation source, optical filtering and real time image capture, assisted with an intuitive graphical user interface...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28325001/reliability-of-a-cortical-surface-based-analysis-with-subcortical-regression-in-the-identification-of-resting-state-functional-networks
#2
R Lopes, P Besson, R Viard, C Bournonville, C Delmaire, X Leclerc
Many methods exist for identifying brain networks in resting-state functional magnetic resonance imaging. During the last decade, there was a growing interest in functional connectivity using surface-based analysis. However, the advantages of this approach against volume-based analysis in a data-driven model are unclear. In this study, we propose an independent component analysis based method to extract the resting-state networks directly on the cortical surface. The components associated with the subcortical regions are identified by multiple linear regressions between the signals in subcortical voxels and independent components time courses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324988/estimation-of-second-phase-insulin-secretion-in-the-zucker-fatty-rat
#3
Micaela Morettini, Francesco Di Nardo, Carla E Cogo, Emanuela Faelli, Sandro Fioretti, Laura Burattini, Piero Ruggeri
The purpose of the present study was to test the efficacy of the empiric index SPIR (Second-phase Insulin Release) in the quantification of second-phase insulin secretion in the Zucker Fatty Rat. SPIR index is defined as the area under the curve of insulin between 8 and 90 min after an Intravenous Glucose Tolerance Test (IVGTT). The validation of such index was performed against the second-phase β-cell responsiveness index (Φ2) provided by C-peptide minimal model. To this aim, Φ2 and SPIR were simultaneously computed from IVGTT data, measured in six Zucker fatty rats (ZFR), 7-to-9week-old, and seven age-matched Zucker lean rats (ZLR)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324986/electrocardiographic-waveforms-fitness-check-device-technique-for-sudden-cardiac-death-risk-screening
#4
O J Escalona, M Mendoza
A novel cardiac health device technique development for reliable, non-invasive and cost-effective heart screening in preventive cardiovascular healthcare is presented. In particular, identification of apparently healthy individuals involved in sports activities (particularly in the young, age <; 35 years) who may be at-risk of sudden-cardiac-death (SCD) is mainly focused here. Nevertheless, the same device technique may be prospectively extended for detecting cardiovascular abnormalities in children and adolescents with type1-diabetes, and also in detecting patients with Brugada syndrome...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324980/effect-of-wearable-sensor-dynamics-on-physical-activity-estimates-a-comparison-between-sci-vs-healthy-individuals
#5
C Jayaraman, C K Mummidisetty, A Jayaraman
Accuracy of physical activity estimates predicted by activity monitoring technologies may be affected by device location, analysis algorithms, type of technology (i.e. wearable/stickable) and population demographics (disability) being studied. Consequently, the main purpose of this investigation was to study such sensor dynamics (i.e. effect of device location, type and population demographics on energy expenditure estimates) of two commercial activity monitors. It was hypothesized that device location, population studied (disability), choice of proprietary algorithm and type of technology used will significantly impact the accuracy of the predicted physical activity metrics...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324969/a-clinical-study-of-short-term-sternal-photoplethysmography-recordings-from-patients-with-obstructive-airways-diseases
#6
Shadi S Chreiteh, Dorthe B Saadi, Bo Belhage, Nassim Nabipour, Karsten Hoppe, Erik V Thomsen
Traditionally, measurements of the oxygen saturation (SpO2) has been confound to the extremities. In this study, we therefore investigated the possibility for reliable estimation of clinically relevant SpO2 levels from photoplethysmography (PPG) obtained on the sternum of patients with obstructive airway diseases. We initiated the study with a calibration of a prototype sternal PPG sensor. In accordance with the ISO 80601-2-61:2011 guidelines, the calibration was conducted as a controlled desaturation study...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324956/a-graphene-oxide-ph-sensor-for-wound-monitoring
#7
B Melai, P Salvo, N Calisi, L Moni, A Bonini, C Paoletti, T Lomonaco, V Mollica, R Fuoco, F Di Francesco
This article describes the fabrication and characterization of a pH sensor for monitoring the wound status. The pH sensitive layer consists of a graphene oxide (GO) layer obtained by drop-casting 5 μΐ of GO dispersion onto the working electrode of a screen-printed substrate. Sensitivity was 31.8 mV/pH with an accuracy of 0.3 unit of pH. Open-circuit potentiometry was carried out to measure pH in an exudate sample. The GO pH sensor proved to be reliable as the comparison with results obtained from a standard glass electrode pH-meter showed negligible differences (<; 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324908/-magnetic-sentinel-lymph-node-detection-in-prostate-cancer-after-intraprostatic-injection-of-superparamagnetic-iron-oxide-nanoparticles
#8
Alexander Winter, Svenja Engels, Tobias Kowald, Tina Susanne Paulo, Holger Gerullis, Ajay Chavan, Friedhelm Wawroschek
In prostate cancer, reliable information about the lymph node status is of great importance for accurate staging and the optimal planning of treatment. Despite recent advances in imaging, the histological detection of metastases, or pelvic lymphadenectomy (PLND), continues to be the most reliable method for lymph node staging in clinically localised prostate cancer, especially as this procedure enables the detection of small or micrometastases. Radioisotope-guided sentinel PLND (sPLND) demonstrates high sensitivity in the detection of lymph node metastases as well as low morbidity in prostate cancer because of the targeted removal of a relatively small number of lymph nodes...
March 21, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28324891/multicenter-prospective-evaluation-of-the-reliability-of-the-combined-use-of-two-models-to-predict-non-sentinel-lymph-node-status-in-breast-cancer-patients-with-metastatic-sentinel-lymph-nodes-the-mskcc-nomogram-and-the-tenon-score-results-of-the-notegs-study
#9
Roman Rouzier, Catherine Uzan, Alexandra Rousseau, Eugénie Guillot, Sonia Zilberman, Charles Meyer, Pablo Estevez, Pierre-Francois Dupre, David Kere, Virginie Doridot, Gauthier D'halluin, Xavier Fritel, Nicolas Pouget, Clémentine Jankowski, Chafika Mazouni, Tabassome Simon, Charles Coutant
BACKGROUND: The purpose of this study was to prospectively evaluate the combined use of The Memorial Sloan Kettering Cancer Center nomogram and Tenon score to select, in patients with metastatic sentinel lymph node (SN), those at low risk of metastatic non-SN for whom additional axillary lymph node dissection (ALND) could be avoided. METHODS: From January 2011 to July 2012, a prospective non-interventional nationwide study was conducted (NCT01509963). We sought to identify the false reassurance rate (FRR, a negative test result is false) in patients with both a ⩽10% probability of metastatic non-SN with the MSKCC nomogram and a Tenon score ⩽3...
March 21, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28324821/muscular-activity-and-torque-of-the-foot-dorsiflexor-muscles-during-decremental-isometric-test-a-cross-sectional-study
#10
Maria Ruiz-Muñoz, Manuel González-Sánchez, Jaime Martín-Martín, Antonio I Cuesta-Vargas
PURPOSE: To analyse the torque variation level that could be explained by the muscle activation (EMG) amplitude of the three major foot dorsiflexor muscles (tibialis anterior (TA), extensor digitorum longus (EDL), extensor hallucis longus (EHL)) during isometric foot dorsiflexion at different intensities. METHODS: In a cross-sectional study, forty-one subjects performed foot dorsiflexion at 100%, 75%, 50% and 25% of maximal voluntary contractions (MVC) with the hip and knee flexed 90° and the ankle in neutral position (90° between leg and foot)...
November 30, 2016: Foot
https://www.readbyqxmd.com/read/28324809/the-internet-as-a-source-of-information-used-by-women-after-childbirth-to-meet-their-need-for-information-a-web-based-survey
#11
J Slomian, O Bruyère, J Y Reginster, P Emonts
OBJECTIVE: the aims of this survey were: (a) to evaluate the need of information after childbirth and what questions do 'new' mothers ask themselves; (b) to assess why and how women use the Internet to meet their need of information; (c) to describe how the respondents evaluate the reliability of the information found; (d) to understand how the information found on the Internet affects women's decision-making; and (e) to appreciate how health professionals react to the information found by the women...
March 14, 2017: Midwifery
https://www.readbyqxmd.com/read/28324769/factors-associated-with-latent-fingerprint-exclusion-determinations
#12
Bradford T Ulery, R Austin Hicklin, Maria Antonia Roberts, JoAnn Buscaglia
Exclusion is the determination by a latent print examiner that two friction ridge impressions did not originate from the same source. The concept and terminology of exclusion vary among agencies. Much of the literature on latent print examination focuses on individualization, and much less attention has been paid to exclusion. This experimental study assesses the associations between a variety of factors and exclusion determinations. Although erroneous exclusions are more likely to occur on some images and for some examiners, they were widely distributed among images and examiners...
February 22, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28324694/screening-of-autism-based-on-task-free-fmri-using-graph-theoretical-approach
#13
Masoumeh Sadeghi, Reza Khosrowabadi, Fatemeh Bakouie, Hoda Mahdavi, Changiz Eslahchi, Hamidreza Pouretemad
Studies on autism spectrum disorder (ASD) have indicated several dysfunctions in the structure, and functional organization of the brain. However, findings have not been established as a general diagnostic tool yet. In this regard, current study proposed an automatic screening method for recognition of ASDs from healthy controls (HCs) based on their brain functional abnormalities. In this paradigm, brain functional networks of 60 adolescent and young adult males (29 ASDs and 31 HCs) were estimated from subjects' task-free fMRI data...
March 9, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28324682/gene-expression-analysis-in-untreated-absence-epilepsy-demonstrates-an-inconsistent-pattern
#14
Markus von Deimling, Robert Häsler, Verena Steinbach, Paul-Martin Holterhus, Sarah von Spiczak, Ulrich Stephani, Ingo Helbig, Hiltrud Muhle
OBJECTIVE: Childhood and Juvenile Absence Epilepsy account for 30% of all genetic generalized epilepsies with a strong genetic contribution. At the current state the genetic background remains to be resolved. The aim of this study was to identify disease associated transcripts pinpointing potential underlying disease mechanisms in patients with CAE and JAE. METHODS: We performed gene expression analysis from peripheral blood mononuclear cells (PBMCs) in 30 patients with newly-diagnosed absence epilepsy prior to initiating treatment and 30 healthy age - and gender-matched pediatric controls...
February 28, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28324644/synthesis-of-the-t-705-ribonucleoside-and-ribonucleotide-and-studies-on-the-chemical-stability
#15
Johanna Huchting, Matthias Winkler, Hiba Nasser, Chris Meier
T-705 (favipiravir) is a fluorinated hydroxypyrazine carboxamide that exhibits antiviral activities against a variety of RNA viruses. Due to the lack of potent agents to combat these infections caused by a large number of these high-impacting pathogens, huge emphasis has been put on the studies of T-705's antiviral properties and its mechanism of action. T-705 acts as a nucleobase analogue; hence, it is metabolized to the corresponding ribonucleoside triphosphate intracellularly. We herein report a reliable synthesis of T-705-ribonucleoside and its 5'-monophosphate...
March 21, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28324340/quantitative-18-f-fluorocholine-positron-emission-tomography-for-prostate-cancer-correlation-between-kinetic-parameters-and-gleason-scoring
#16
Joshua J D Schaefferkoetter, Ziting Wang, Mary C Stephenson, Sharmili Roy, Maurizio Conti, Lars Eriksson, David W Townsend, Thomas Thamboo, Edmund Chiong
BACKGROUND: The use of radiolabeled choline as a positron emission tomography (PET) agent for imaging primary tumors in the prostate has been evaluated extensively over the past two decades. There are, however, conflicting reports of its sensitivity and the relationship between choline PET imaging and disease staging is not fully understood. Moreover, relatively few studies have investigated the correlation between tracer uptake and histological tumor grade. This work quantified (18)F-fluorocholine in tumor and healthy prostate tissue using pharmacokinetic modeling and stratified uptake parameters by histology grade...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28324130/the-oblique-popliteal-ligament-an-anatomic-and-mri-investigation
#17
Mandy Hedderwick, Mark D Stringer, Liam McRedmond, Grant R Meikle, Stephanie J Woodley
PURPOSE: Despite being the largest ligament on the posterior aspect of the knee, relatively little is known about the normal morphology of the oblique popliteal ligament (OPL). The aim of this study was to investigate the detailed anatomy of the OPL in cadavers and healthy volunteers. METHODS: The posterior knee was investigated in 25 cadaver lower limbs (mean age 76 ± 9.5 years; 7 men) by dissection, histology, and serial plastination and in 14 healthy individuals (mean age 23 ± 3...
March 21, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28324066/hippocampal-aromatization-modulates-spatial-memory-and-characteristics-of-the-synaptic-membrane-in-the-male-zebra-finch
#18
David J Bailey, Yekaterina V Makeyeva, Elizabeth R Paitel, Alyssa L Pedersen, Angel T Hon, Jordan A Gunderson, Colin J Saldanha
The estrogen-synthesizing enzyme aromatase is abundant at the synapse in the zebra finch hippocampus (HP) and its inhibition impairs spatial memory function. To more fully test the role of local estradiol (E2) synthesis in memory, the HP of adult male zebra finches was exposed to either control pellets or those containing the aromatase inhibitor ATD, ATD and E2, ATD and the G protein-coupled estrogen receptor (GPER) agonist G1, or the antagonist G15 alone. Birds were tested for spatial memory acquisition and performance, and HP levels of the postsynaptic protein PSD95 were measured...
January 27, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323944/from-pregnancy-to-preeclampsia-a-key-role-for-estrogens
#19
Nadia Berkane, Philippe Liere, Jean-Paul Oudinet, Alexandre Hertig, Guillaume Lefèvre, Nicola Pluchino, Michael Schumacher, Nathalie Chabbert-Buffet
Preeclampsia (PE) results of placental dysfunction and is one of the primary causes of maternal and fetal mortality and morbidity. During pregnancy, estrogen is produced primarily in the placenta by conversion of androgen precursors originating from maternal and fetal adrenal glands. These processes lead to increased plasma estrogen concentrations compared to non-pregnant women. Aberrant production of estrogens could play a key role in PE symptoms, since they are exclusively produced by the placenta and they promote angiogenesis and vasodilation...
March 3, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/28323862/is-floral-structure-a-reliable-indicator-of-breeding-system-in-the-brassicaceae
#20
Phillip A Salisbury, Yvonne J Fripp, Allison M Gurung, Warren M Williams
This study investigated the usefulness of floral characters as a potential indicator of breeding system in the Brassicaceae. Initially, pod set, seed set and pollen tube growth experiments were carried out to confirm the breeding systems of 53 lines representing 25 different cultivated and weedy species from the Brassicaceae. The results of the pod set tests clearly differentiated between self-compatible and self-incompatible species. Floral characters were then evaluated on one or more lines of each of the 25 species...
2017: PloS One
keyword
keyword
4853
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"