N
Nuno Ferreira
Researcher at University of Sussex
Publications - 193
Citations - 2333
Nuno Ferreira is an academic researcher from University of Sussex. The author has contributed to research in topics: Iterative reconstruction & Refugee. The author has an hindex of 24, co-authored 178 publications receiving 2044 citations. Previous affiliations of Nuno Ferreira include University of Manchester & Centro Hospitalar de Vila Nova de Gaia/Espinho.
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Role of temperature and humidity in the modulation of the doubling time of COVID-19 cases
TL;DR: Results indicate that the doubling time correlates positively with temperature and inversely with humidity, suggesting that a decrease in the rate of progression of COVID-19 with the arrival of spring and summer in the north hemisphere.
Posted ContentDOI
Estimation of risk factors for COVID-19 mortality - preliminary results
TL;DR: It is found that age is the variable that presents higher risk of COVID-19 mortality, where 60 or older patients have an OR = 18.8161 (CI95%[7.1997; 41.5517]).
Journal ArticleDOI
Direct comparison of cardiac magnetic resonance and multidetector computed tomography stress-rest perfusion imaging for detection of coronary artery disease.
Nuno Bettencourt,Amedeo Chiribiri,Andreas Schuster,Nuno Ferreira,Francisco Sampaio,Francisco Sampaio,Gustavo Pires-Morais,Lino Santos,Bruno Melica,Alberto Rodrigues,Pedro Braga,Luís Filipe Azevedo,Madalena Teixeira,Adelino F. Leite-Moreira,José Silva-Cardoso,Eike Nagel,Vasco Gama +16 more
TL;DR: The MDCT-IP had a sensitivity, specificity, positive and negative predictive values of 89, 83, 80% and 90%, respectively (global accuracy 85%). These results were closely related with those achieved by CMR-Perf: 89, 88, 85% and 91%, respectively as mentioned in this paper.
Journal ArticleDOI
Design and evaluation of the clear-PEM scanner for positron emission mammography
M.C. Abreu,J.D. Aguiar,F. G. Almeida,Pedro Almeida,P. Bento,B. Carrico,Miguel A. Ferreira,Nuno Ferreira,F. Goncalves,C. Leong,F. Lopes,P. Lousa,M.V. Martins,Nuno Matela,P.R. Mendes,R. Moura,J. Nobre,Nuno Oliveira,Catarina Ortigao,Luis Peralta,R. Pereira,J. Rego,R. Ribeiro,Pedro Rodrigues,José Paulo Sampaio,Ana Santos,L. G. T. Silva,João Carlos Silva,Pedro Sousa,Isabel C. Teixeira,João Paulo Teixeira,A. Trindade,Joao Varela +32 more
TL;DR: The Clear-PEM imaging system for positron emission mammography, under development by the PEM Consortium within the framework of the Crystal Clear Collaboration at CERN, is presented in this paper.
Journal Article
Optimization of Injected Dose Based on Noise Equivalent Count Rates for 2- and 3-Dimensional Whole-Body PET
Carole Lartizien,Claude Comtat,Paul E. Kinahan,Nuno Ferreira,Bernard Bendriem,Regine Trebossen +5 more
TL;DR: The injected dose was adapted to patient morphology for 2D and 3D whole-body acquisitions using the NEC rate as a figure of merit of the statistical quality of the sinogram data as a first step toward a more comprehensive comparison of the image quality obtained using both acquisition modes.