Two-Dimensional Image-Based Respiratory Navigator for Free-Breathing Coronary Magnetic Resonance Angiography
Investigative Magnetic Resonance Imaging
;
: 71-77, 2018.
Artigo
em Inglês
| WPRIM
| ID: wpr-740117
ABSTRACT
PURPOSE:
To develop a two-dimensional (2D) image-based respiratory motion correction technique for free-breathing coronary magnetic resonance angiography (MRA). MATERIALS ANDMETHODS:
The proposed respiratory navigator obtained aliased a 2D sagittal image from under-sampled k-space data and utilized motion correlation between the aliased images. The proposed navigator was incorporated into the conventional coronary MRA sequence including the diaphragm navigator and tested in three healthy subjects.RESULTS:
The delineation of major coronary arteries was significantly improved using the proposed 2D motion correction (S/I and A/P) compared to one-dimensional (S/I) correction using the conventional diaphragm navigator.CONCLUSION:
The 2D image-based respiratory navigator was proposed for free-breathing coronary angiography and showed the potential for improving respiratory motion correction compared to the conventional 1D correction.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Diafragma
/
Angiografia Coronária
/
Angiografia por Ressonância Magnética
/
Vasos Coronários
/
Voluntários Saudáveis
Idioma:
Inglês
Revista:
Investigative Magnetic Resonance Imaging
Ano de publicação:
2018
Tipo de documento:
Artigo
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