F. V. de Sales

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OBJECTIVES The objective of the article is to explore the surgical practices and views in the treatment of melanoma within members and non-members of the EORTC Melanoma Group (MG) during the years 2003-2005. METHODS An e-mail questionnaire (see appendix) developed within the EORTC MG was sent to all melanoma units (MUs) of the EORTC (180) and to selected(More)
Virtual Histology (VH) is a new medical imaging technique that allows the assessment of atherosclerotic plaque composition, a potential useful tool for the evaluation of individuals with coronary disease. Empirical observation has suggested that plaque areas adjacent to dense calcium (DC) are frequently coded as necrotic core (NC) in VH images. The main(More)
In-vivo atherosclerotic plaque composition has been currently assessed by means of techniques based on spectral analysis of backscattered intravascular ultrasonic signals. Conversely, conventional IVUS images are based only on amplitude envelope of ultrasonic signals, discarding some frequency information and, consequently, disabling tissue characterization(More)
We report the results of time-integrated and time-resolved photoluminescence spectroscopy on red-emitting self-organized InAs/Al 0.6 Ga 0.4 As quantum dots with indirect barriers. Spatially resolved PL measurements confirm that carriers excited in the Al 0.6 Ga 0.4 As barriers are consistent with a carrier hopping process between dots, a result also(More)
This paper analyses a strategy for ischemia detection based on wavelet decomposition of the ST segment. The wavelet transform is used as a pre-processing tool for linear discriminant classifier. In order to minimize generalization problems caused by correlations between the classification variables, a selection algorithm is employed to choose a subset of(More)
We have investigated the quantum dot (QD) carrier capture mechanism using continuous wave photoluminescence as a function of the optical excitation intensity using a sample with a QD density gradient across its surface ranging from 0 to 1.8 £ 10 11 cm 22. Modelling of the carrier kinetics has been described by a set of three coupled rate equations(More)
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