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About

About

I began my academic life in 2007 by joining the Bachelor of Computing Engineering and Medical Instrumentation, at ISEP. After concluding my bachelor degree in 2010, I’ve joined the master degree in biomedical engineering, at FEUP. There I worked under the supervision of Professor Aurélio Campilho and I developed an ultrasound classification system used to the detection of the carotid walls. After the conclusion of my master degree, I moved to Belgium where I did my PhD. In my PhD I’ve developed a system which allows clinicians to quantify the tissue deformation patterns of the Achilles tendon in-vivo.

Since March 2017 I've been collaborating with INESCTEC. I am working on C-BER where we have been developing a computer-aided diagnosis system for the prevention and early diagnosis of pathologies of the female reproductive system.

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Details

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Publications

2018

A robust anisotropic edge detection method for carotid ultrasound image processing

Authors
Rouco, J; Carvalho, C; Domingues, A; Azevedo, E; Campilho, A;

Publication
Procedia Computer Science

Abstract

2018

Non-uniform deformation in Achilles tendon is not influenced by a change in knee angle or level of force production during isometric contractions

Authors
Bogaerts, S; De Brito Carvalho, C; Groef, D; Suetens, P; Peers, K;

Publication
Annals of Physical and Rehabilitation Medicine

Abstract

2018

Non-uniformity in pre-insertional Achilles tendon is not influenced by changing knee angle during isometric contractions

Authors
Bogaerts, S; Carvalho, CD; De Groef, A; Suetens, P; Peers, K;

Publication
SCANDINAVIAN JOURNAL OF MEDICINE & SCIENCE IN SPORTS

Abstract
Achilles tendinopathy remains a prevalent condition among recreational and high-level athletes. Mechanical loading has become the gold standard in managing these injuries, but exercises are often generic and prescribed in a "one-size-fits-all" principle. The aim of this study was to evaluate the impact of knee angle changes and different levels of force production on the non-uniform behavior in the Achilles tendon during isometric contractions. It was hypothesized that a flexed knee position would lead to a more distinct non-uniform behavior, due to greater differential loading of soleus vs gastrocnemius, and that this effect would be attenuated by higher levels of force production. Contrary to the hypotheses, it was found that the non-uniform deformation, that is, superficial-to-deep variation in displacement with highest displacement in the deep layer, is consistently present, irrespective of the level of force production and knee angle (n = 19; mean normalized displacement ratio 6.32%, 4.88%, and 4.09% with extended knee vs 5.47%, 2.56%, and 6.01% with flexed knee, at 25%, 50%, and 75% MVC, respectively; P > .05). From tendon perspective, aside from the influence on muscle behavior, this might question the mechanical rationale for a change in knee angle during eccentric heel drops. Additionally, despite reaching high levels of plantar flexion force, the relative contribution of the AT sometimes appears to be decreased, potentially due to compensatory actions by agonist muscle groups. These results are relevant for optimizing AT rehabilitation as the goal is to reach specific local tendon loading.

2017

3D Tendon Strain Estimation Using High-frequency Volumetric Ultrasound Images: A Feasibility Study

Authors
Carvalho, C; Slagmolen, P; Bogaerts, S; Scheys, L; D'hooge, J; Peers, K; Maes, F; Suetens, P;

Publication
Ultrasonic Imaging

Abstract

2017

Evaluation of tissue displacement and regional strain in the Achilles tendon using quantitative high-frequency ultrasound

Authors
Bogaerts, S; Carvalho, CD; Scheys, L; Desloovere, K; D'hooge, J; Maes, F; Suetens, P; Peers, K;

Publication
PLOS ONE

Abstract
The Achilles tendon has a unique structure-function relationship thanks to its innate hierarchical architecture in combination with the rotational anatomy of the sub-tendons from the triceps surae muscles. Previous research has provided valuable insight in global Achilles tendon mechanics, but limitations with the technique used remain. Furthermore, given the global approach evaluating muscle-tendon junction to insertion, regional differences in tendon mechanical properties might be overlooked. However, recent advancements in the field of ultrasound imaging in combination with speckle tracking have made an intratendinous evaluation possible. This study uses high-frequency ultrasound to allow for quantification of regional tendon deformation. Also, an interactive application was developed to improve clinical applicability. A dynamic ultrasound of both Achilles tendons of ten asymptomatic subjects was taken. The displacement and regional strain in the superficial, middle and deep layer were evaluated during passive elongation and isometric contraction. Building on previous research, results showed that the Achilles tendon displaces non-uniformly with a higher displacement found in the deep layer of the tendon. Adding to this, a non-uniform regional strain behavior was found in the Achilles tendon during passive elongation, with the highest strain in the superficial layer. Further exploration of tendon mechanics will improve the knowledge on etiology of tendinopathy and provide options to optimize existing therapeutic loading programs.