Cutaneous melanoma--past, present, and future.
Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA.Journal of the American Academy of Dermatology (impact factor: 3.99). 08/2004; 51(1 Suppl):S65-9. DOI:10.1016/j.jaad.2004.01.030 pp.S65-9
Article: Definition of an automated Content-Based Image Retrieval (CBIR) system for the comparison of dermoscopic images of pigmented skin lesions.[show abstract] [hide abstract]
ABSTRACT: New generations of image-based diagnostic machines are based on digital technologies for data acquisition; consequently, the diffusion of digital archiving systems for diagnostic exams preservation and cataloguing is rapidly increasing. To overcome the limits of current state of art text-based access methods, we have developed a novel content-based search engine for dermoscopic images to support clinical decision making. To this end, we have enrolled, from 2004 to 2008, 3415 caucasian patients and collected 24804 dermoscopic images corresponding to 20491 pigmented lesions with known pathology. The images were acquired with a well defined dermoscopy system and stored to disk in 24-bit per pixel TIFF format using interactive software developed in C++, in order to create a digital archive. The analysis system of the images consists in the extraction of the low-level representative features which permits the retrieval of similar images in terms of colour and texture from the archive, by using a hierarchical multi-scale computation of the Bhattacharyya distance of all the database images representation with respect to the representation of user submitted (query). The system is able to locate, retrieve and display dermoscopic images similar in appearance to one that is given as a query, using a set of primitive features not related to any specific diagnostic method able to visually characterize the image. Similar search engine could find possible usage in all sectors of diagnostic imaging, or digital signals, which could be supported by the information available in medical archives.BioMedical Engineering OnLine 09/2009; 8:18. · 1.40 Impact Factor
Article: Melanoma cutáneo[show abstract] [hide abstract]
ABSTRACT: El melanoma cutáneo es el tumor más maligno de la piel y tiene una gran capacidad para producir metástasis. Desde hace 50 años su incidencia ha aumentando considerablemente en el mundo, incluyendo México. Aun cuando se conocen algunos factores de riesgo, el diagnóstico y tratamiento temprano son las únicas estrategias que han demostrado mejorar el pronóstico de quienes lo padecen, siendo su manejo todo un reto. En este artículo se presenta una revisión y actualización del melanoma cutáneo, su epidemiología, etiología, los factores de riesgo asociados, la clasificación, los criterios diagnósticos, importancia del ganglio centinela, manejo, tratamiento y prevención.Gaceta medica de Mexico 02/2010; 146(2):126-135. · 0.22 Impact Factor
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ABSTRACT: Dermoscopy (dermatoscopy, epiluminescence microscopy) is a non-invasive diagnostic technique for the in vivo observation of pigmented skin lesions (PSLs), allowing a better visualization of surface and subsurface structures (from the epidermis to the papillary dermis). This diagnostic tool permits the recognition of morphologic structures not visible by the naked eye, thus opening a new dimension in the analysis of the clinical morphologic features of PSLs. In order to reduce the learning-curve of non-expert clinicians and to mitigate problems inherent in the reliability and reproducibility of the diagnostic criteria used in pattern analysis, several indicative methods based on diagnostic algorithms have been introduced in the last few years. Recently, numerous systems designed to provide computer-aided analysis of digital images obtained by dermoscopy have been reported in the literature. The goal of this article is to review these systems, focusing on the most recent approaches based on content-based image retrieval systems (CBIR).Cancers. 01/2010;
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