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About

I was born in Matosinhos, Portugal, in 1993. I finished the Integrated Master in Bioengineering from Faculdade de Engenharia da Universidade do Porto in 2016. I specialized in Biomedical Engineering. Currently, I am pursuing a PhD, being enrolled in the MAP Doctoral Programme in Computer Science (MAP-i). During my PhD, I will be hosted at INESC TEC, more precisely in the Visual Computing and Machine Intelligence group (VCMI).

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Publications

2019

Sparse Multi-Bending snakes

Authors
Araujo, RJ; Fernandes, K; Cardoso, JS;

Publication
IEEE Transactions on Image Processing

Abstract

2019

A Single-Resolution Fully Convolutional Network for Retinal Vessel Segmentation in Raw Fundus Images

Authors
Araújo, RJ; Cardoso, JS; Oliveira, HP;

Publication
Lecture Notes in Computer Science - Image Analysis and Processing – ICIAP 2019

Abstract

2019

Deep Vesselness Measure from Scale-Space Analysis of Hessian Matrix Eigenvalues

Authors
Araújo, RJ; Cardoso, JS; Oliveira, HP;

Publication
Pattern Recognition and Image Analysis - Lecture Notes in Computer Science

Abstract

2019

Towards Automatic and Robust Particle Tracking in Microrheology Studies

Authors
Castro, M; Araújo, RJ; Campo-Deaño, L; Oliveira, HP;

Publication
Pattern Recognition and Image Analysis - Lecture Notes in Computer Science

Abstract

2019

Computer aided detection of deep inferior epigastric perforators in computed tomography angiography scans

Authors
Araujo, RJ; Garrido, V; Baracas, CA; Vasconcelos, MA; Mavioso, C; Anacleto, JC; Cardoso, MJ; Oliveira, HP;

Publication
Computerized Medical Imaging and Graphics

Abstract
The deep inferior epigastric artery perforator (DIEAP) flap is the most common free flap used for breast reconstruction after a mastectomy. It makes use of the skin and fat of the lower abdomen to build a new breast mound either at the same time of the mastectomy or in a second surgery. This operation requires preoperative imaging studies to evaluate the branches – the perforators – that irrigate the tissue that will be used to reconstruct the breast mound. These branches will support tissue viability after the microsurgical ligation of the inferior epigastric vessels to the receptor vessels in the thorax. Usually through a computed tomography angiography (CTA), each perforator is manually identified and characterized by the imaging team, who will subsequently draw a map for the identification of the best vascular support for the reconstruction. In the current work we propose a semi-automatic methodology that aims at reducing the time and subjectivity inherent to the manual annotation. In 21 CTAs from patients proposed for breast reconstruction with DIEAP flaps, the subcutaneous region of each perforator was extracted, by means of a tracking procedure, whereas the intramuscular portion was detected through a minimum cost approach. Both were subsequently compared with the radiologist manual annotation. Results showed that the semi-automatic procedure was able to correctly detect the course of the DIEAPs with a minimum error (average error of 0.64 and 0.50 mm regarding the extraction of subcutaneous and intramuscular paths, respectively), taking little time to do so. The objective methodology is a promising tool in the automatic detection of perforators in CTA and can contribute to spare human resources and reduce subjectivity in the aforementioned task. © 2019 Elsevier Ltd