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Details

  • Name

    Luís Filipe Antunes
  • Cluster

    Computer Science
  • Role

    Centre Coordinator
  • Since

    15th December 2011
007
Publications

2020

Profiling IT security and interoperability in Brazilian health organisations from a business perspective

Authors
Rui, RJ; Martinho, R; Oliveira, AA; Alves, D; Nogueira Reis, ZSN; Santos Pereira, C; Correia, ME; Antunes, LF; Cruz Correia, RJ;

Publication
International Journal of E-Health and Medical Communications

Abstract
The proliferation of electronic health (e-Health) initiatives in Brazil over the last 2 decades has resulted in a considerable fragmentation within health information technology (IT), with a strong political interference. The problem regarding this issue became twofold: 1) there are considerable flaws regarding interoperability and security involving patient data; and 2) it is difficult even for an experienced company to enter the Brazilian health IT market. In this article, the authors aim to assess the current state of IT interoperability and security in hospitals in Brazil and evaluate the best business strategy for an IT company to enter this difficult but very promising health IT market. A face-to-face questionnaire was conducted among 11 hospital units to assess their current status regarding IT interoperability and security aspects. Global Brazilian socio-economic data was also collected, and helped to not only identify areas of investment regarding health IT security and interoperability, but also to derive a business strategy, composed out of recommendations listed in the paper. Copyright © 2020, IGI Global.

2020

Cancer incidence after childhood irradiation for tinea capitis in a Portuguese cohort

Authors
Antunes, L; Bento, MJ; Sobrinho Simoes, M; Soares, P; Boaventura, P;

Publication
BRITISH JOURNAL OF RADIOLOGY

Abstract
Objectives: Our aim was to compare cancer incidence in a cohort exposed in childhood (1950-63) to a therapeutic dose of radiation in the North of Portugal and followed-up until the end of 2012, with the incidence rates for the same age and sex in the general population. Methods: A population-based North Region cancer registry (RORENO) was used to assess which members of the cohort developed cancer. The association between radiation exposure and overall and specific cancer sites was evaluated using standardised incidence ratios (SIR). Results: Over the full follow-up period, 3357 individuals of the 5356 original tinea capitis (TC) cohort (63%) were retrieved in the RORENO, and 399 new cancer cases were identified, representing an increased risk of 49% when compared with the general population (SIR = 1.49; 95%CI: 1.35-1.64). The risk was slightly higher in males than in females (SIR = 1.65; 95%CI: 1.43-1.89 vs SIR = 1.35; CI = 1.17-1.55). The risk was slightly higher in the individuals exposed to a higher radiation dose (SIR = 1.78; 95%CI: 1.22-2.51 for >= 630 R vs SIR = 1.46: 95%CI:: 1.31-1.62 for 325-475 R). In females, there was an excess cancer risk in all cancers with the higher radiation dose (SIR = 2.00; 95%CI: 1.21-3.13 for >= 630 R vs SIR = 1.30; 95%CI: 1.11-1.51 for 325-475 R) which was not observed in males, and for combined dose categories significantly raised SIRs for thyroid and head and neck cancer, suggesting a possible higher radiosensitivity of females. An increased risk was also observed for some cancers located far from the irradiated area. Conclusions: The results suggest an association between radiation exposure and later increased cancer risk for cancers located near the radiation exposed area, mainly thyroid, and head and neck cancers. Further studies are necessary to disentangle possible non-radiation causes for distant cancers increased risk. Advances in knowledge: This paper shows a possible association between childhood X-ray epilation and increased risk of cancer which was not previously investigated in the Portuguese TC cohort.

2020

Nonlinear Methods Most Applied to Heart-Rate Time Series: A Review

Authors
Henriques, T; Ribeiro, M; Teixeira, A; Castro, L; Antunes, L; Costa Santos, C;

Publication
Entropy

Abstract
The heart-rate dynamics are one of the most analyzed physiological interactions. Many mathematical methods were proposed to evaluate heart-rate variability. These methods have been successfully applied in research to expand knowledge concerning the cardiovascular dynamics in healthy as well as in pathological conditions. Notwithstanding, they are still far from clinical practice. In this paper, we aim to review the nonlinear methods most used to assess heart-rate dynamics. We focused on methods based on concepts of chaos, fractality, and complexity: Poincaré plot, recurrence plot analysis, fractal dimension (and the correlation dimension), detrended fluctuation analysis, Hurst exponent, Lyapunov exponent entropies (Shannon, conditional, approximate, sample entropy, and multiscale entropy), and symbolic dynamics. We present the description of the methods along with their most notable applications.

2019

pTASC: trustable autonomous secure communications

Authors
Sousa, PR; Cirne, A; Resende, JS; Martins, R; Antunes, L;

Publication
Proceedings of the 20th International Conference on Distributed Computing and Networking, ICDCN 2019, Bangalore, India, January 04-07, 2019

Abstract

2019

OpenEHR and General Data Protection Regulation: Evaluation of Principles and Requirements

Authors
Goncalves Ferreira, D; Sousa, M; Bacelar Silva, G; Frade, S; Antunes, L; Beale, T; Cruz Correia, R;

Publication
JMIR MEDICAL INFORMATICS

Abstract
Background: Concerns about privacy and personal data protection resulted in reforms of the existing legislation in the European Union (EU). The General Data Protection Regulation (GDPR) aims to reform the existing directive on the topic of personal data protection of EU citizens with a strong emphasis on more control of the citizens over their data and in the establishment of rules for the processing of personal data. OpenEHR is a standard that embodies many principles of interoperable and secure software for electronic health records (EHRs) and has been advocated as the best approach for the development of hospital information systems. Objective: This study aimed to understand to what extent the openEHR standard can help in the compliance of EHR systems to the GDPR requirements. Methods: A list of requirements for an EHR to support GDPR compliance and also a list of the openEHR design principles were made. The requirements were categorized and compared with the principles by experts on openEHR and GDPR. Results: A total of 50 GDPR requirements and 8 openEHR design principles were identified. The openEHR principles conformed to 30% (15/50) of GDPR requirements. All the openEHR principles were aligned with GDPR requirements. Conclusions: This study showed that the openEHR principles conform well to GDPR, underlining the common wisdom that truly realizing security and privacy requires it to be built in from the start. By using an openEHR-based EHR, the institutions are closer to becoming compliant with GDPR while safeguarding the medical data.

Supervised
thesis

2019

Privacy Enhancing Technologies

Author
Ana Cristina de Melo Carvalho

Institution
UP-FCUP

2019

Privacy Preserving Middleware Platform for IoT

Author
Patrícia Raquel Vieira Sousa

Institution
UP-FCUP

2019

A secure mobile based health information system solution - from understanding and conceptualizing to prototyping the patient experience

Author
Cátia Andreia Santos Pereira Augusto

Institution
UP-FEUP

2019

Security Enhancing Technologies for Cloud-of-Clouds

Author
João Miguel Maia Soares de Resende

Institution
UP-FCUP

2019

Arquitetura segura no desenvolvimento de software: Abordagem à plataforma digital U.OPENLAB

Author
Domingos Alberto Teixeira Guedes Ferreira

Institution
UP-FCUP