Search results for "Length measurement"

showing 3 items of 13 documents

The effect of gestational age and cervical length measurements in the prediction of spontaneous preterm birth in twin pregnancies : an individual pat…

2016

OBJECTIVE: To assess the effect of gestational age (GA) and cervical length (CL) measurements at transvaginal ultrasound (TVUS) in the prediction of preterm birth in twin pregnancy. DESIGN: Individual patient data (IPD) meta-analysis. SETTING: International multicentre study. POPULATION: Asymptomatic twin pregnancy. METHODS: MEDLINE and EMBASE searches were performed and IPD obtained from authors of relevant studies. Multinomial logistic regression analysis determined probabilities for birth at ≤28(+0) , 28(+1) to 32(+0) , 32(+1) to 36(+0) , and ≥36(+1) weeks as a function of GA at screening and CL measurements. MAIN OUTCOME MEASURES: Predicted probabilities for preterm birth at ≤28(+0) , 2…

medicine.medical_specialtyPopulationGestational AgeCervix UteriReviewResearch Support03 medical and health sciences0302 clinical medicinePredictive Value of TestsPregnancymedicineJournal ArticleHumans030212 general & internal medicineNon-U.S. Gov'teducationTwin PregnancyGynecologyeducation.field_of_studyPregnancy030219 obstetrics & reproductive medicinebusiness.industryObstetricsResearch Support Non-U.S. Gov'tprematurityTwinObstetrics and GynecologyGestational agepreterm birthtwin pregnancymedicine.diseaseCervical Length MeasurementMulticenter Studyindividual patient meta-analysisPremature birthCervical Length MeasurementPredictive value of testsPregnancy TwinGestationPremature BirthFemalebusinessCervical lengthMeta-Analysis
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Variations of OCT measurements corrected for the magnification effect according to axial length and refractive error in children

2018

Purpose: The aim of this paper was to examine the distribution of macular, retinal nerve fiber layer (RNFL) thickness and optic disc parameters of myopic and hyperopic eyes in comparison with emmetropic control eyes and to investigate their variation according to axial length (AL) and spherical equivalent (SE) in healthy children. Methods: This study included 293 pairs of eyes of 293 children (145 boys and 148 girls), ranging in age from 6 to 17 years. Subjects were divided according to SE in control (emmetropia, 99 children), myopia (100 children) and hyperopia (94 children) groups and according to axial AL in 68 short ([Formula: see text]22.00[Formula: see text]mm, 68), medium (from [For…

medicine.medical_specialtyRefractive errorgenetic structuresmagnification effectBiomedical EngineeringNerve fiber layerMedicine (miscellaneous)MagnificationEmmetropiaUlls -- Acomodació i refraccióSpherical equivalent:Ciències de la visió::Optometria::Acomodació i refracció [Àrees temàtiques de la UPC]lcsh:TechnologyEye--Accommodation and refractionLength measurement03 medical and health sciencesAxial length0302 clinical medicinechildrenOphthalmologyDegeneració retinalmedicinelcsh:QC350-467refractive errorRetinal degenerationOptical coherence tomographybusiness.industrylcsh:TMean ageAxial lengthmedicine.diseaseAtomic and Molecular Physics and Opticseye diseasesElectronic Optical and Magnetic Materialsmedicine.anatomical_structureCoherència (Òptica)OCT measurements030221 ophthalmology & optometryOptometrysense organsbusinessInfants030217 neurology & neurosurgerylcsh:Optics. LightOptic disc
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Different Measurement Setup Configurations for Space Charge test in Mini Cable Specimens with the PEA Method

2019

Under DC stress, the space charge accumulation is believed one of the most responsible of dielectrics ageing. For this reason, due to the increase of the HVDC transmission, a recommendation has been proposed. The latter want to introduce the space charge measure, with the PEA method, in cable specimens during the prequalification or type tests. Considering the several issues related to this kind of measures the aim of the proposed work is find a measurement setup for mini cable specimens which is able to provide a clear and clean space charge profile. Therefore, different tests have been made in this work. In particular, the length of the cable specimen, the width of the pulse electrodes, a…

mini cable010302 applied physicsMaterials sciencePEA method020209 energyAcoustics02 engineering and technology01 natural sciencesMeasure (mathematics)Space chargeSpace chargePulse (physics)Stress (mechanics)Settore ING-IND/31 - ElettrotecnicaLength measurementCable specimenPEA for cableTransmission (telecommunications)Position (vector)0103 physical sciencesElectrode0202 electrical engineering electronic engineering information engineering2019 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
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