An adaptive scaling hybrid algorithm for reduction of CT artifacts caused by metal objects / 中国医疗器械杂志
Chinese Journal of Medical Instrumentation
;
(6): 87-90, 2009.
Artigo
em Chinês
| WPRIM
| ID: wpr-329369
ABSTRACT
A new adaptively hybrid filtering algorithm is proposed to reduce the artifacts caused by metal in CT image. Firstly, the method is used to preprocess the projection data of metal region and is reconstruct by filtered back projection (FBP) method. Then the expectation maximization algorithm (EM) is performed on the iterative original metal project data. Finally, a compensating procedure is applied to the reconstructed metal region. The simulation result has demonstrated that the proposed algorithm can remove the metal artifacts and keep the structure information of metal object effectively. It ensures that the tissues around the metal will not be distorted. The method is also computational efficient and effective for the CT images which contains several metal objects.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Algoritmos
/
Tomografia Computadorizada por Raios X
/
Artefatos
/
Metais
/
Métodos
Tipo de estudo:
Estudo prognóstico
Idioma:
Chinês
Revista:
Chinese Journal of Medical Instrumentation
Ano de publicação:
2009
Tipo de documento:
Artigo
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