25 documents found, page 1 of 3

Repository of MRI-derived models of the breast with single and multiple benign ...

The diagnosis of breast cancer through MicroWave Imaging (MWI) technology has been extensively researched over the past few decades. However, continuous improvements to systems are needed to achieve clinical viability. To this end, the numerical models employed in simulation studies need to be diversified, anatomically accurate, and also representative of the cases in clinical settings. Hence, we have created t...

Breast MRI Multi-Tumor Segmentation using 3D Region Growing

Breast tumor is one of the most prominent indicators for diagnosis of breast cancer. Magnetic Resonance Imaging (MRI) is a relevant imaging modality tool for breast cancer screening. Moreover, an accurate 3D segmentation of breast tumors from MRI scans plays a key role in the analysis of the disease. This paper presents a pipeline to automatically segment multiple tumors in breast MRI scans, following the metho...

Validation of Dielectric Properties Estimation from Magnetic Resonance Images t...

Knowledge about dielectric properties of biological tissues is critical for the development and validation of microwave systems, such as Microwave Imaging (MWI) prototypes. However, measurement of dielectric properties of heterogeneous tissues with conventional techniques present some challenges, as most adopted techniques are designed for homogeneous tissues, and limited number of samples may be available. In ...

Da educação do campo ao direito ao campo? Práticas e discursos situados do rura...

Face à literatura da urbanização planetária, e informado pela história da Educação no Campo no Brasil, este artigo examina o potencial do modelo teórico de um Direito ao Campo, inspirado pela teoria do espaço-tempo social de Henri Lefebvre. O modelo de um Direito ao Campo, em desenvolvimento através de investigação doutoral, inclui o reivindicar de espacialidades próprias do campo, assim como o direito à delibe...

Aldeamento de guerra no colonialismo português na Guiné-Bissau

O artigo questiona o campo de aldeamento de guerra enquanto espaço de encarceramento no colonialismo europeu tardio, assim como o consequente legado para os Estados após as independências políticas. A pesquisa na qual o artigo se baseia concentra-se nas redes de campos rurais criados em territórios ocupados em África e na Ásia, por vários Estados do Atlântico Norte, para o realojamento forçado de camponeses, de...

From countryside education to the right to the countryside? Situated practices ...

Facing the literature on planetary urbanization, and informed by the history of Countryside Education in Brazil, this article examines the potential of a theoretical model of a Right to the Countryside, inspired by the theory of social space-time of Henri Lefebvre. The concept of a Right to the Countryside, which is being developed through a PhD dissertation, includes claiming the specificity of the spatialitie...

Development of MRI‐based axillary numerical models and estimation of axillary l...

Purpose: Microwave imaging (MWI) has been studied as a complementary imaging modality to improve sensitivity and specificity of diagnosis of axillary lymph nodes (ALNs), which can be metastasized by breast cancer. The feasibility of such a system is based on the dielectric contrast between healthy and metastasized ALNs. However, reliable information such as anatomically realistic numerical models and matching d...

Development of 3D MRI-Based Anatomically Realistic Models of Breast Tissues and...

Breast cancer diagnosis using radar-based medical MicroWave Imaging (MWI) has been studied in recent years. Realistic numerical and physical models of the breast are needed for simulation and experimental testing of MWI prototypes. We aim to provide the scientific community with an online repository of multiple accurate realistic breast tissue models derived from Magnetic Resonance Imaging (MRI), including beni...

A habitação no Programa de Recuperação e Resiliência

Em abril de 2021, após um período de consulta pública (concluído a 1 de março) o Governo Português submeteu à Comissão Europeia o Plano de Recuperação e Resiliência (PRR). Neste artigo, a Rede H analisa as escolhas estratégicas e programáticas feitas pelo PRR no setor da habitação, baseando-se nos comentários da referida Rede submetidos no âmbito da consulta pública2 e atualizados após a publicação da versão fi...

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