Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/3011
Título: Global and local detection of liver steatosis from ultrasound
Autor: Ribeiro, Ricardo
Marinho, Rui
Sanches, João
Palavras-chave: Acoustics
Biomedical imaging
Design automation
Feature extraction
Liver
Ultrasonic imaging
Wavelet transforms
Data: 2012
Editora: IEEE
Citação: Ribeiro R, Marinho R, Sanches J. Global and local detection of liver steatosis from ultrasound. In Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE; 2012. p. 6547-50.
Resumo: Liver steatosis is a common disease usually associated with social and genetic factors. Early detection and quantification is important since it can evolve to cirrhosis. Steatosis is usually a diffuse liver disease, since it is globally affected. However, steatosis can also be focal affecting only some foci difficult to discriminate. In both cases, steatosis is detected by laboratorial analysis and visual inspection of ultrasound images of the hepatic parenchyma. Liver biopsy is the most accurate diagnostic method but its invasive nature suggest the use of other non-invasive methods, while visual inspection of the ultrasound images is subjective and prone to error. In this paper a new Computer Aided Diagnosis (CAD) system for steatosis classification and analysis is presented, where the Bayes Factor, obatined from objective intensity and textural features extracted from US images of the liver, is computed in a local or global basis. The main goal is to provide the physician with an application to make it faster and accurate the diagnosis and quantification of steatosis, namely in a screening approach. The results showed an overall accuracy of 93.54% with a sensibility of 95.83% and 85.71% for normal and steatosis class, respectively. The proposed CAD system seemed suitable as a graphical display for steatosis classification and comparison with some of the most recent works in the literature is also presented.
Peer review: yes
URI: http://hdl.handle.net/10400.21/3011
ISBN: 978-1-4244-4120-4
Versão do Editor: http://users.isr.ist.utl.pt/~jmrs/research/publications/myPapers/2012/EMBC2012/2012_EMBC_RicardoRibeiro.pdf
Aparece nas colecções:ESTeSL - Capítulos ou partes de livros

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