An Improved Retrospective Respiratory Navigator Gating Technique / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 1317-1322, 2015.
Artigo
em Chinês
| WPRIM
| ID: wpr-357874
ABSTRACT
Abdominal imaging is one of the important clinical applications of magnetic resonance imagining, but image degradation due to respiratory motion remains a major problem. Retrospective respiratory navigator gating technique is an effective approach to alleviate such degradation but is subject to long scan time and low signal-to-noise ratio (SNR) efficiency. In this study, a modified retrospective navigator gating technique with variable over-sampling ratio acquisition and weighted average reconstruction algorithm is presented. Experiments in phantom and the imaging results of seven volunteers demonstrated that the proposed method provided an enhanced SNR and reduced ghost-to-image ratio compared to the conventional method. The proposed method can also be used to reduce imaging time while maintaining comparable image quality.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Respiração
/
Algoritmos
/
Imageamento por Ressonância Magnética
/
Artefatos
/
Imagens de Fantasmas
/
Imageamento Tridimensional
/
Razão Sinal-Ruído
/
Movimento (Física)
Limite:
Humanos
Idioma:
Chinês
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2015
Tipo de documento:
Artigo
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