Coleção de Artigos Acadêmicos
URI permanente para esta coleçãohttps://repositorio.insper.edu.br/handle/11224/3227
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12 resultados
Resultados da Pesquisa
Artigo Científico Estimation of the tissue composition of the tumour mass in neuroblastoma using segmented CT images(2004) FABIO JOSE AYRES; M. K. Zuffo,; Rangayyan, R. M.; Boag, G. S.; O. Filho, V.; Valente , M.Neuroblastoma is the most common extra-cranial, solid, malignant tumour in children. Advances in radiology have made possible the detection and staging of the disease. Nevertheless, there is no method available at present that can go beyond detection and qualitative analysis, towards quantitative assessment of the tissues composition of the primary tumour mass in neuroblastoma. Such quantitative analysis could provide important information and serve as a decision-support tool to the radiologist and the oncologist, result in better treatment and follow-up and even lead to the avoidance of delayed surgery. The problem investigated was the improvement of the analysis of the primary tumour mass, in patients with neuroblastoma, using X-ray computed tomography (CT) images. A methodology was proposed for the estimation of the tissue content of the mass: it comprised a Gaussian mixture model for estimation, from segmented CT images, of the tissue composition of the primary tumour. To demonstrate the potential of the method, the results are presented of its application to ten CT examinations of four patients. The method provides quantitative information, and it was observed that the tumour in one of the patients reduced from 523 cm3 to 81 cm3 in volume, with an increase in calcification from about 20% to about 88% of the tumour volume, in response to chemotherapy over a period of five months. Results indicate that the proposed technique may be of considerable value in assessing the response to therapy of patients with neuroblastoma.Artigo Científico Coordinating B2B cross-border supply chains: the case of the organic coffee industry(2004) DANNY PIMENTEL CLARO; PRISCILA BORIN DE OLIVEIRA CLAROArtigo Científico How to manage a long-term buyer-supplier relationship successfully? The impact of network information on long-term buyer-supplier relationships in the Dutch potted plant and flower industry(2004) DANNY PIMENTEL CLARO; PRISCILA BORIN DE OLIVEIRA CLARO; Omta, Onno S. W. F.Artigo Científico Finding a maximum skewness portfolio - a general solution to three-moments portfolio choice(2004) GUSTAVO MONTEIRO DE ATHAYDE; Flôres Junior, Renato GalvãoArtigo Científico Full Dollarization: The Case of Panama(2001) GINO ABRAHAM OLIVARES LEANDRO; Goldfajn, IlanArtigo Científico Convergence clubs among brazilian municipalities(2004) Andrade, Eduardo; Laurini, Márcio; Madalozzo, Regina Carla; Pereira, Pedro L. VallsArtigo Científico On the survival of contracts: assessing the stability of technology licensing agreements in the brazilian seed industry(2003) Zylbersztajn, Decio; SERGIO GIOVANETTI LAZZARINIArtigo Científico Order with Some Law: Complementarity versus Substitution of Formal and Informal Arrangements(2004) SERGIO GIOVANETTI LAZZARINI; Miller, Gary J.; Zenger, Todd R.Artigo Científico From Alliance Networks to Multilateral Alliances: Understanding the Organization of Multiple-Firm Linkages(2004) SERGIO GIOVANETTI LAZZARINIArtigo Científico Integrating supply chain and network analyses: the study of netchains(2001) SERGIO GIOVANETTI LAZZARINI; Chaddad, Fabio; Cook, Michael