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https://www.readbyqxmd.com/read/28227827/a-novel-tool-and-procedure-for-in-situ-volumetric-calibration-of-motion-capture-systems-for-breathing-analysis
#1
C Massaroni, E Schena, P Saccomandi, S Silvestri, C Massaroni, E Schena, P Saccomandi, S Silvestri, C Massaroni, P Saccomandi, E Schena, S Silvestri
Optical motion capture systems are widely used in biomechanics although have not been significantly explored for measuring volumes and volume variations yet. The aim of this study was to propose and test a completely novel procedure for the calibration of motion capture systems for the breathing analysis in terms of volume measurements, by the use of a tool consisting in an ad-hoc designed in-situ calibration device (CD) and two algorithms for calibration. Both the calibration tool and the calibration procedure performed in the range 0-2780mL on an Optoelectronic Plethysmography (OEP) system are presented...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227507/efficient-assembly-of-multi-color-fiberless-optoelectrodes-with-on-board-light-sources-for-neural-stimulation-and-recording
#2
K Kampasi, J Seymour, E Stark, G Buzsaki, K D Wise, E Yoon, K Kampasi, J Seymour, E Stark, G Buzsaki, K D Wise, E Yoon, E Yoon, K Kampasi, J Seymour, G Buzsaki, E Stark, K D Wise
Fiberless optoelectrodes are an emerging tool to enable brain circuit mapping by providing precise optical modulation and electrical monitoring of many neurons. While optoelectrodes having an on-board light source offer compact and optically efficient device solutions, many of them fail to provide robust thermal and electrical design to fully exploit the recording capabilities of the device. In this work, we present a novel fiberless multicolor optoelectrode solution, which meets the optical and thermal design requirements of an in vivo neural optoelectrode and offers potential for low-noise neural recording...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226983/perspective-imaging-of-flow-in-arterial-model-obtained-with-continuous-wave-doppler-focusing-technique
#3
Ryo Nagaoka, Katsuhiro Sasaki, Seiichi Zama, Masaaki Nagone, Hiroshi Nagai, Yasuhito Takeuchi, Yoshifumi Saijo, Ryo Nagaoka, Katsuhiro Sasaki, Seiichi Zama, Masaaki Nagone, Hiroshi Nagai, Yasuhito Takeuchi, Yoshifumi Saijo, Yoshifumi Saijo, Hiroshi Nagai, Katsuhiro Sasaki, Masaaki Nagone, Seiichi Zama, Ryo Nagaoka, Yasuhito Takeuchi
Flowing emboli in the circulatory system cause fatal diseases such as stroke or pulmonary embolism. Conventional transcranial Doppler ultrasound for detection of emboli requires precise positioning by experienced examiner. In the present study, an easier emboli detection device by visualizing perspective view of blood vessel is proposed. The perspective image was obtained with continuous wave (CW) Doppler ultrasound from 2-dimensional array probe. CW Doppler signal from each element was focused by novel beam forming algorithm to obtain en face images at arbitrary depth to form perspective image...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226400/population-pharmacokinetics-and-pharmacodynamic-target-attainment-of-ampicillin-in-neonates-with-hypoxemic-ischemic-encephalopathy-in-the-setting-of-controlled-hypothermia
#4
Jeffrey J Cies, Keri N Fugarolas, Wayne S Moore, Robert W Mason, Ogechukwu R Menkiti
STUDY OBJECTIVE: To describe the population pharmacokinetics and pharmacodynamic target attainment of ampicillin in neonates with hypoxic-ischemic encephalopathy (HIE) undergoing controlled hypothermia (CH). DESIGN: Prospective, open-label pharmacokinetic study. SETTING: 189-bed, freestanding children's tertiary care teaching hospital. PATIENTS: Thirteen neonates (three females, 10 males) with HIE encephalopathy receiving CH and ampicillin 100 mg/kg/dose intravenously every 8 hours who were admitted to the neonatal intensive care unit between May 2013 and June 2014...
February 22, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28225820/analysis-of-spatial-mobility-in-subjects-from-a-dengue-endemic-urban-locality-in-morelos-state-mexico
#5
Jorge Abelardo Falcón-Lezama, René Santos-Luna, Susana Román-Pérez, Ruth Aralí Martínez-Vega, Marco Arieli Herrera-Valdez, Ángel Fernando Kuri-Morales, Ben Adams, Pablo Antonio Kuri-Morales, Malaquías López-Cervantes, José Ramos-Castañeda
INTRODUCTION: Mathematical models and field data suggest that human mobility is an important driver for Dengue virus transmission. Nonetheless little is known on this matter due the lack of instruments for precise mobility quantification and study design difficulties. MATERIALS AND METHODS: We carried out a cohort-nested, case-control study with 126 individuals (42 cases, 42 intradomestic controls and 42 population controls) with the goal of describing human mobility patterns of recently Dengue virus-infected subjects, and comparing them with those of non-infected subjects living in an urban endemic locality...
2017: PloS One
https://www.readbyqxmd.com/read/28225357/robust-sound-speed-estimation-for-ultrasound-based-hepatic-steatosis-assessment
#6
Imbault Marion, Alex Faccinetto, Bruno-Felix Osmanski, Antoine Tissier, Thomas Deffieux, Jean-Luc Gennisson, Valerie Vilgrain, Mickael Tanter
Hepatic steatosis is a common condition, the prevalence of which is increasing along with non-alcoholic fatty liver disease (NAFLD). Currently, the most accurate noninvasive imaging method for diagnosing and quantifying hepatic steatosis is MRI, which estimates the Proton-Density Fat Fraction (PDFF) as a measure of fractional fat content. However, MRI suffers several limitations including cost, contra-indications and poor availability. Although conventional ultrasound is widely used by radiologists for hepatic steatosis assessment, it remains qualitative and operator dependent...
February 22, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28225348/the-effects-of-smoking-on-treatment-outcome-in-patients-newly-diagnosed-with-pulmonary-tuberculosis
#7
M R Masjedi, M Hosseini, M Aryanpur, E Mortaz, P Tabarsi, H Soori, H Emami, G Heidari, M K Dizagie, M Baikpour
SETTING: Smoking is reported to be associated with tuberculosis (TB), but its effect on sputum smear conversion remains a matter for discussion. OBJECTIVE: To assess the effects of smoking and smoking cessation on treatment outcomes in patients newly diagnosed with TB in Iran. DESIGN: Newly diagnosed smear-positive TB patients were included in the study. All smokers participated in a smoking cessation programme. Sputum smear status was evaluated at the end of month 2, 5 and 6 of treatment, and smoking status was evaluated at the end of month 2...
March 1, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28225304/column-switching-uhplc-ms-ms-with-restricted-access-material-for-the-determination-of-cns-drugs-in-plasma-samples
#8
Vinicius Ricardo Acquaro, Diego Soares Domingues, Maria Eugênia Costa Queiroz
BACKGROUND: Polypharmacy is a common practice in schizophrenia. Consequently, therapeutic drug monitoring is usually adopted to maintain the concentrations of the drugs in the plasma within a targeted therapeutic range, to maximize therapeutic efficiency and to diminish adverse side effects. METHODOLOGY: This study reports on a column switching UHPLC-MS/MS method to determine psychotropic drugs in plasma samples simultaneously. RESULTS: The method was linear from 0...
February 22, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28224771/comparison-of-the-qiagen-artus-hbv-qs-rgq-assay-with-the-roche-cobas-ampliprep-cobas-taqman-hbv-assay-for-quantifying-viral-dna-in-sera-of-chronic-hepatitis-b-patients
#9
Mi Soon Han, Yongjung Park, Hyunjin Nah, Hyon Suk Kim
BACKGROUND: Hepatitis B virus DNA quantification is essential for managing chronic hepatitis B (CHB). We compared the performance of artus HBV QS-RGQ (QIAGEN GmbH, Germany) and CAP/CTM v2.0 HBV assays (Roche Molecular Diagnostics, USA) in CHB patients. METHODS: A comparative evaluation between two assays was performed with 508 clinical serum samples. Precision, linearity, and the limit of detection (LOD) of QS-RGQ assay was evaluated by using the WHO standard 97/750 and clinical samples...
May 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28224247/a-simplified-lc-ms-ms-method-for-rapid-determination-of-cycloserine-in-small-volume-human-plasma-using-protein-precipitation-coupled-with-dilution-techniques-to-overcome-matrix-effects-and-its-application-to-a-pharmacokinetic-study
#10
Zhengsheng Mao, Xin Wang, Bingxin Li, Jing Jin, Ming Xu, Youping Liu, Xin Di
Matrix effects have been a major concern when developing LC-MS/MS methods for quantitative bioanalysis of cycloserine. Sample handling procedures including solid phase extraction or derivatization have been reported previously by researchers to overcome matrix effects of cycloserine. In the present study, the possibility of reducing matrix effects of cycloserine using protein precipitation coupled with dilution techniques was investigated. Plasma samples were pretreated by protein precipitation with methanol followed by a 40-fold dilution with methanol-water (50:50, v/v)...
February 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28224243/simultaneous-quantitation-of-endogenous-estrone-17%C3%AE-estradiol-and-estriol-in-human-serum-by-isotope-dilution-liquid-chromatography-tandem-mass-spectrometry-for-clinical-laboratory-applications
#11
Qiaoxuan Zhang, Liqiao Han, Jianbing Wang, Haibiao Lin, Peifeng Ke, Junhua Zhuang, Xianzhang Huang
Estrogen measurements are important in the assessment of female reproductive function and have expanding roles in other fields. A simple, accurate, highly sensitive and specific isotope-dilution liquid chromatography-tandem mass spectrometry method was developed and evaluated to simultaneously measure three endogenous estrogens in serum: estrone (E1), 17β-estradiol (E2), and estriol (E3). Chromatographic separation was achieved on a C18 column before electrospray ionization triple-quadrupole mass spectrometry in multiple reaction monitoring mode...
February 21, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28223873/development-and-validation-of-bioanalytical-uhplc-uv-method-for-simultaneous-analysis-of-unchanged-fenofibrate-and-its-metabolite-fenofibric-acid-in-rat-plasma-application-to-pharmacokinetics
#12
Rayan G Alamri, Kazi Mohsin, Ajaz Ahmad, Mohammad Raish, Fars K Alanazi
A simple, precise, selective and fast ultra-high performance liquid chromatography (UHPLC-UV) method has been developed and validated for the simultaneous determination of a lipid regulating agent fenofibrate and its metabolite fenofibric acid in rat plasma. The chromatographic separation was carried out on a reversed-phase Acquity® BEH C18 column using methanol-water (65:35, v/v) as the mobile phase. The isocratic flow was 0.3 ml/min with rapid run time of 2.5 min and UV detection was at 284 nm. The method was validated over a concentration range of 100-10000 ng/ml (r(2) ⩾ 0...
January 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28223468/high-ambulatory-arterial-stiffness-index-is-an-independent-risk-factor-for-rapid-age-related-glomerular-filtration-rate-decline-in-the-general-middle-aged-population
#13
Bjørn Odvar Eriksen, Vidar Tor Nyborg Stefansson, Trond Geir Jenssen, Ulla Dorte Mathisen, Jørgen Schei, Marit Dahl Solbu, Tom Wilsgaard, Toralf Melsom
Arterial stiffness is a risk factor for cardiovascular and chronic kidney disease. However, the role of arterial stiffness as a predictor of the age-related glomerular filtration rate (GFR) decline in the general population remains unresolved because of difficulty in measuring GFR with sufficient precision in epidemiological studies. The ambulatory arterial stiffness index (AASI) is a proposed indicator of arterial stiffness easily calculated from ambulatory blood pressure. We investigated whether AASI could predict GFR decline measured as iohexol clearance in the general population...
February 21, 2017: Hypertension
https://www.readbyqxmd.com/read/28223249/predicted-unfavorable-neurological-outcome-is-overestimated-by-the-marshall-ct-score-crash-and-impact-models-in-severe-tbi-patients-management-with-early-decompressive-craniectomy
#14
Jose D Charry, Jorman H Tejada, Miguel A Pinzon, Wilson A Tejada, Juan D Ochoa, Manuel Falla, Jesus H Tovar, Ana M Cuellar-Bahamón, Juan P Solano
INTRODUCTION: Traumatic Brain Injury (TBI) is of public health interest and produces significant mortality and disability in Colombia. Calculators and prognostic models have been developed in order to establish neurologic outcome. We tested prognostic models (the Marshall CT score, IMPACT, and CRASH) for 14-day mortality, 6-month mortality, and 6-month outcome in TBI patients in a university Hospital in Colombia. METHODS: A 127 patients' cohort with TBI was treated in a regional trauma center in Colombia over 2 years and Bivariate and Multivariate analyses were used...
February 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28222873/influence-of-abutment-tooth-geometry-on-the-accuracy-of%C3%A2-conventional-and-digital-methods-of-obtaining-dental%C3%A2-impressions
#15
Jeison B Carbajal Mejía, Kazumichi Wakabayashi, Takashi Nakamura, Hirofumi Yatani
STATEMENT OF PROBLEM: Direct (intraoral) and indirect (desktop) digital scanning can record abutment tooth preparations despite their geometry. However, little peer-reviewed information is available regarding the influence of abutment tooth geometry on the accuracy of digital methods of obtaining dental impressions. PURPOSE: The purpose of this in vitro study was to evaluate the influence of abutment tooth geometry on the accuracy of conventional and digital methods of obtaining dental impressions in terms of trueness and precision...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28222869/accuracy-evaluation-of-intraoral-optical-impressions-a-clinical-study-using-a-reference-appliance
#16
Mohammad A Atieh, André V Ritter, Ching-Chang Ko, Ibrahim Duqum
STATEMENT OF PROBLEM: Trueness and precision are used to evaluate the accuracy of intraoral optical impressions. Although the in vivo precision of intraoral optical impressions has been reported, in vivo trueness has not been evaluated because of limitations in the available protocols. PURPOSE: The purpose of this clinical study was to compare the accuracy (trueness and precision) of optical and conventional impressions by using a novel study design. MATERIAL AND METHODS: Five study participants consented and were enrolled...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28222156/toothbrush-abrasivity-in-a-long-term-simulation-on-human-dentin-depends-on-brushing-mode-and-bristle-arrangement
#17
Mozhgan Bizhang, Ilka Schmidt, Yong-Hee Patricia Chun, Wolfgang H Arnold, Stefan Zimmer
OBJECTIVE: The aim of this study was to evaluate the susceptibility of dentin to brushing abrasion using four different toothbrushes (rotating-oscillating, sonic and two types of manual toothbrushes) with the same brushing forces. METHODS: Dentin samples (n = 72) were selected from 72 impacted third molars. Half of the surface of dentin samples was covered with an adhesive tape, creating a protected and a freely exposed area in the same specimen. Brushing was performed with either a: sonic (Sonicare PowerUp, Philips GmbH, Hamburg, Germany), b: oscillating-rotating (Oral B Vitality Precisions Clean, Procter & Gamble, Schwalbach am Taunus, Germany) or two different manual toothbrushes c: flat trim brush head toothbrush (Dr...
2017: PloS One
https://www.readbyqxmd.com/read/28220976/evaluation-of-a-new-hemoglobin-a1c-analyzer-for-point-of-care-testing
#18
Rui Zhou, Wei Wang, Zhi-Xin Song, Qing Tong, Qing-Tao Wang
BACKGROUND: There has been an increasing desire for the use of point-of-care testing (POCT) by both primary care clinicians and patients. This study aimed to evaluate the performance of a new POCT analyzer for hemoglobin A1c (HbA1c) testing. METHODS: We assessed the accuracy, precision, and linearity of the POCT HbA1c analyzer (A1C EZ 2.0) with the Tosoh G8 Analyzer as comparative instrument, following the Clinical and Laboratory Standards Institute (CLSI) protocols...
February 21, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28219465/relationships-between-methane-emission-of-holstein-friesian-dairy-cows-and-fatty-acids-volatile-metabolites-and-non-volatile-metabolites-in-milk
#19
S van Gastelen, E C Antunes-Fernandes, K A Hettinga, J Dijkstra
This study investigated the relationships between methane (CH4) emission and fatty acids, volatile metabolites (V) and non-volatile metabolites (NV) in milk of dairy cows. Data from an experiment with 32 multiparous dairy cows and four diets were used. All diets had a roughage : concentrate ratio of 80 : 20 based on dry matter (DM). Roughage consisted of either 1000 g/kg DM grass silage (GS), 1000 g/kg DM maize silage (MS), or a mixture of both silages (667 g/kg DM GS and 333 g/kg DM MS; 333 g/kg DM GS and 677 g/kg DM MS)...
February 21, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28217949/clinical-impact-of-the-presence-of-macrophages-in-endomyocardial-biopsies-of-patients-with-dilated-cardiomyopathy
#20
Takafumi Nakayama, Yasuo Sugano, Tetsuro Yokokawa, Toshiyuki Nagai, Taka-Aki Matsuyama, Keiko Ohta-Ogo, Yoshihiko Ikeda, Hatsue Ishibashi-Ueda, Takeshi Nakatani, Nobuyuki Ohte, Satoshi Yasuda, Toshihisa Anzai
BACKGROUND: Dilated cardiomyopathy (DCM) is the most common cardiomyopathy and causes left ventricular enlargement and contractile dysfunction, with a poor prognosis. The mechanisms underlying the disease process have not been precisely identified, but recent evidence has suggested that the activation of myocardial inflammation is involved in the deterioration associated with the condition. METHODS AND RESULTS: Biopsy samples from 182 consecutive DCM patients were immunohistochemically stained with antibodies specific to CD3 (T lymphocytes), CD68 (whole macrophages), and CD163 (M2 macrophages), and each type of infiltrating cell was counted...
February 20, 2017: European Journal of Heart Failure
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