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- Explicit design of transfer functions for volume-rendered images by combining histograms, thumbnails, and sketch-based interactionPublication . Lopes, D; Parreira, P; Mendes, A; Pires, V; Paulo, S; Sousa, C; Jorge, JVisual quality of volume rendering for medical imagery strongly depends on the underlying transfer function. Conventional Windows–Icons–Menus–Pointer interfaces typically refer the user to browse a lengthy catalog of predefined transfer functions or to pain-staking refine the transfer function by clicking and dragging several independent handles. To turn the standard design process less difficult and tedious, this paper proposes novel interactions on a sketch-based interface that supports the design of 1D transfer functions via touch gestures to directly control voxel opacity and easily assign colors. User can select different types of transfer function shapes including ramp function, free hand curve drawing, and slider bars similar to those of a mixing table. An assorted array of thumbnails provides an overview of the data when editing the transfer function. User performance is evaluated by comparing the time and effort necessary to complete a number of tests with sketch-based and conventional interfaces. Users were able to more rapidly explore and understand volume data using the sketch-based interface, as the number of design iterations necessary to obtain a desirable transfer function was reduced. In addition, informal evaluation sessions carried out with professionals (two senior radiologists, a general surgeon and two scientific illustrators) provided valuable feedback on how suitable the sketch-based interface is for illustration, patient communication and medical education.
- Excelência da prática clínica evidenciada pelo processo clínico eletrónico: mito ou realidade?Publication . Sousa, CÉ hoje comumente demonstrado num crescendo de literatura especializada, os ganhos diretos e indiretos para a saúde, pelo recurso às tecnologias de informação. Portugal, limitado pelo exíguo mercado, recursos financeiros e dependência da tutela no que refere ao desenvolvimento das TIC em Saúde, vem trilhando um caminho sedimentado de avanços e fracassos, instigando alguma desmotivação e descrença entre os profissionais de saúde, face aos limitados resultados, em oposição a elevadas e justas expectativas, criadas por uma indústria imatura e pela assimetria com outros setores de atividade. Os quais, sendo pioneiros na introdução das TIC em todo o ciclo de suporte operacional e de relação com o cliente, proporcionaram à sociedade mudanças disruptivas, ainda por identificar na saúde. Por outro lado, é possível adotar hoje modelos de maturidade que ajudam a inferir sobre os ganhos em saúde, visando benchmarking e melhoria contínua, tornando mensurável a excelência da prática clínica de uma organização de saúde.
- Mobile health platform for pressure ulcer monitoring with electronic health record integration.Publication . Rodrigues, J; Pedro, L; Vardasca, T; Torre-Diez, I; Martins, HPressure ulcers frequently occur in patients with limited mobility, for example, people with advanced age and patients wearing casts or prostheses. Mobile information communication technologies can help implement ulcer care protocols and the monitoring of patients with high risk, thus preventing or improving these conditions. This article presents a mobile pressure ulcer monitoring platform (mULCER), which helps control a patient's ulcer status during all stages of treatment. Beside its stand-alone version, it can be integrated with electronic health record systems as mULCER synchronizes ulcer data with any electronic health record system using HL7 standards. It serves as a tool to integrate nursing care among hospital departments and institutions. mULCER was experimented with in different mobile devices such as LG Optimus One P500, Samsung Galaxy Tab, HTC Magic, Samsung Galaxy S, and Samsung Galaxy i5700, taking into account the user's experience of different screen sizes and processing characteristics
- O acesso aberto à literatura científica e a plataforma OJSPublication . Sustelo, A; Vardasca, TO século XXI surge associado a uma Internet “rapidíssima” que permite em milésimos de segundos encontrar informação e guardá-la de forma imediata. Além de rentabilizar tempo permite virtualmente estar em diferentes locais ao mesmo tempo.
- Manchester triage system version II and resource utilisation in emergency departmentPublication . Santos, A; Freitas, PT; Martins, HEmergency department (ED) triage systems aim to direct the best clinical assistance to those who are in the greatest urgency and guarantee that resources are efficiently applied.The study's purpose was to determine whether the Manchester Triage System (MTS) second version is a useful instrument for determining the risk of hospital admission, intrahospital death and resource utilisation in ED and to compare it with the MTS first version.This was a prospective study of patients that attended the ED at a large hospital. It comprised a total of 25 218 cases that were triaged between 11 July and 13 October 2011. The MTS codes were grouped into two clusters: red and orange into a 'high acuity/priority' (HP) cluster, and yellow, green and blue into a 'low acuity/priority' cluster.The risk of hospital admission in the HP cluster was 4.86 times that of the LP cluster for both admission route and ages. The percentage of patient hospital admission between medical and surgical specialties, in high and low priority clusters, was similar. We found the risk of death in the HP cluster to be 5.58 times that of the risk of the low acuity/priority cluster. The MTS had an inconsistent association relative to the utilisation of x-ray, while it seemed to portray a consistent association between ECG and laboratory utilisation and MTS cluster.There were no differences between medical and surgical specialities risk of admission. This suggests that improvements were made in the second version of MTS, particularly in the discriminators of patients triaged to surgical specialties, because this was not true for the first version of MTS.