Scatter correction of PET based on non-linear statistical estimate method / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 74-77, 2005.
Article
en Zh
| WPRIM
| ID: wpr-327130
Biblioteca responsable:
WPRO
ABSTRACT
Scatter coincident events are the important factor that affects the quality of positron emission tomography (PET) images. In this paper, according to the characters of projection data, a scatter correction method which uses maximum likelihood expectation maximization (MLEM) algorithm based on poisson model is proposed. We compared the sinograms and reconstructed images corrected by MLEM algorithm and deconvolution method respectively. The results indicate that the algorithm proposed in this paper increases the contrast of images while correcting scatter. It is better than the traditional method.
Texto completo:
1
Índice:
WPRIM
Asunto principal:
Dispersión de Radiación
/
Algoritmos
/
Procesamiento de Imagen Asistido por Computador
/
Distribución de Poisson
/
Dinámicas no Lineales
/
Tomografía de Emisión de Positrones
/
Métodos
Tipo de estudio:
Prognostic_studies
Idioma:
Zh
Revista:
Journal of Biomedical Engineering
Año:
2005
Tipo del documento:
Article