Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Joao G Alves"'
Autor:
Danielle Di Cavalcanti, Lucas V Alves, Geraldo J Furtado, Cleusa C Santos, Fabiana G Feitosa, Maria C Ribeiro, Paulo Menge, Izabelle M Lira, Joao G Alves
Publikováno v:
PLoS ONE, Vol 12, Iss 4, p e0175065 (2017)
To report the echocardiographic evaluation of 103 infants with presumed congenital Zika syndrome.An observational retrospective study was performed at Instituto de Medicina Integral Prof. Fernando Figueira (IMIP), Recife, Brazil. 103 infants with pre
Externí odkaz:
https://doaj.org/article/9a52aea1e950480ba05b3ccf32fd4840
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
To characterise the mean glandular dose (MGD) in a sample of healthcare providers for digital mammography in Portugal. To compare the achieved values with European references. The MGD was measured on a poly-methyl-methacrylate phantom (45 mm) for eac
Autor:
J. V. Cardoso, A.G. Dias, Joao G. Alves, Luis T. Cunha, Luís M. Santos, Sandra Sarmento, João A. M. Santos, Joana Pereira, Augusto César Penalva de Oliveira, Maria José Sousa, M. Pereira
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose The purpose of this study was to evaluate the efficacy of needle holders in reducing staff hand exposure during biopsies guided by computed tomography fluoroscopy (CTF), through the analysis of data acquired during a detailed monitoring study
Autor:
Joao G. Alves, Carlos Augusto Fernandes de Oliveira, Augusto César Penalva de Oliveira, Mário João Fartaria, M. Pereira, João Luís Cardoso, L. M. Santos
Publikováno v:
Radiation Measurements. 82:138-145
The aim of this work is to show that the focal spot size of a given X-ray tube can be determined from the profile of the radiation beam without the use of devices specifically designed for that task. The approach presented relies on a simple model fo
Publikováno v:
Evolution, Medicine, and Public Health
Patterns of fetal growth predict non-communicable disease risk in adult life, but fetal growth variability appears to have a relatively weak association with maternal nutritional dynamics during pregnancy. This challenges the interpretation of fetal
Autor:
Joana Pereira, M. Pereira, J. V. Cardoso, Joao G. Alves, L. M. Santos, Mário João Fartaria, Cláudia Reis, V. Holovey, Ana Pascoal, Carlos Augusto Fernandes de Oliveira
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
The aim of this paper is the characterization of four thermoluminescence detectors (TLD), namely, LiF:Mg,Ti, LiF:Mg,Cu,P, Li2B4O7:Mn and Li2B4O7:Cu for the measurement of the entrance surface air kerma (ESAK) and estimation of the mean glandular dose
Publikováno v:
Radiation Measurements. 43:641-645
In this paper the characterization of the dosimetry system and of the personal dosemeter in terms of the stability of the reader calibration factors and of the linearity of the response for the 137Cs reference radiation is presented. The energy and a
Autor:
Joao G. Alves
Publikováno v:
Radiation Measurements. 43:558-564
In recent years there has been a huge increase in the development and publication of standards, documents of relevance and other guidance for individual monitoring (IM), particularly for external radiation. An extensive list of the main documents pub
Autor:
Maria Da graça saraiva, S. Rangel, M. Pereira, Joao G. Alves, Joana Pereira, L. M. Santos, J. V. Cardoso
Publikováno v:
Radiation protection dosimetry. 170(1-4)
Thermoluminescence dosemeters are widely used in individual and environmental monitoring. The aim of this work was to compare the thermal stability of dosemeters of the Ext-Rad and whole-body card types with LiF:Mg,Ti and LiF:Mg,Cu,P detectors stored