| Revista: | Computational & applied mathematics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000310705 |
| ISSN: | 0101-8205 |
| Autors: | Pierro, Alvaro R. de1 Crepaldi, Fabiana |
| Institucions: | 1Universidade Estadual de Campinas, Departamento de Matemática Aplicada, Campinas, Sao Paulo. Brasil |
| Any: | 2006 |
| Volum: | 25 |
| Número: | 2-3 |
| Paginació: | 205-227 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | We describe the continuous and discrete mathematical models for Emission Computed Tomography (ECT) and the need for attenuation correction. Then we analyse the problem of retrieving the attenuation directly from the emission data, nonuniqueness and its consequences. We present the existing and new approaches for solving the problem. Methods are compared and illustrated by numerical simulations. The presentation focuses on Positron Emission Tomography, but we also discuss the extensions to Single Photon Emission Computed Tomography |
| Disciplines | Matemáticas, Física y astronomía |
| Paraules clau: | Física nuclear, Radón, Modelos matemáticos, Transformada atenuada, Probabilidad máxima, Tomografía por emisión de positrones |
| Keyword: | Mathematics, Physics and astronomy, Nuclear physics, Mathematical models, Radon, Attenuated transform, Maximum likelihood, Positron emission tomography |
| Text complet: | Texto completo (Ver HTML) |
