SCIARRONE , Andrea

Brain stroke detection is becoming an important topic for the microwave imaging research community. In this work, we propose a quantitative method for detecting hemorrhagic brain strokes through the reconstruction of the dielectric permittivity distribution inside head. The associated nonlinear inverse scattering problem is iteratively solved...

An early diagnosis of brain stroke diseases is crucial to identify the recommended medical treatment in the first hours after the accident. In this contribution, the earlystage characterization of brain strokes is tackled by a microwave imaging technique which exploits the benefits of a combined qualitative/quantitative data inversion. A first...

Several studies and experimental trials show promising outcomes of stroke diagnosis and monitoring in adults using microwave techniques. The application of such methods to pediatric stroke has never been explored, despite the potential usefulness in many cases. The goal of this work is to start approaching this problem, with a preliminary...

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This article describes a microwave tomographic approach for the quantitative imaging of brain stroke inside the human head. For the acquisition of the scattered-field information, a prototype of multistatic system is adopted. An array of custom antennas is placed in contact with the head, and a switching matrix is used to measure the scattering...

The treatments for brain stroke are strongly timedependent. The medical literature highlights the need of a quick diagnosis in order to guarantee the most effective therapy. An important target for strokes is trying to achieve a Door-to-Needle (DTN) time of less than 60 minutes, which is called Golden Hour [1]. This paper proposes a mobile...

This paper presents a tomographic inverse scattering algorithm based on an iterative regularization approach developed in Lp Banach spaces. The proposed technique has been applied to the microwave biomedical imaging of the human head, in order to detect and locate hemorrhagic brain strokes. Preliminary numerical results are provided in order to...

A conjugate-gradient-based regularization technique in P Banach spaces, in conjunction with an inexact-Newton solving scheme, is presented in this paper. The proposed method is applied to obtain the reconstruction of the dielectric properties of human tissues in hemorrhagic brain stroke microwave imaging. The dielectric reconstruction is...

This paper concerns the problem of data inversion in microwave imaging for biomedical applications. In particular, the integral equations of the inverse scattering problem are solved - in a regularized sense - by a new iterative procedure based on a conjugate gradient method. The approach is developed in Lp Banach spaces. Transverse magnetic...

The use of microwave techniques for biomedical sensing and imaging is in continuous evolution, and the realization of accurate and efficient system prototypes is fundamental in bridging the gap between the algorithm development and its practical application. In this paper, a prototype of multistatic imaging system, mainly designed for the...

Several research teams around the world are currently involved in developing imaging systems, with different specific final objectives and considered modalities. Although excellent results have been reported in the scientific literature (see, for example, [1], [2], and the references therein), there are theoretical and practical difficulties...

Nowadays, Location Based Services (LBS) are fore- seen as a fundamental building block of modern mobile applications and services. Important examples of LBS concerns indoor environments in which GPS technology cannot be used. On the other hand, the great diffusion of pervasive Mobile Devices (MDs) as smartphones and tablets has enabled many...

This paper presents a study on the performance of a speaker identification system in challenging environmental conditions, such as in the presence of noise and at a distance. We propose a robust speaker recognition algorithm, which includes a smart pre-processing method based on Voice Activity Detection (VAD), capable to boost the system...