Optimal Protocol for Contrast-enhanced Free-running 5D Whole-heart Coronary MR Angiography at 3T
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- Ishida Masaki
- Department of Radiology, Mie University Hospital
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- Yerly Jérôme
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL) Center for Biomedical Imaging (CIBM)
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- Ito Haruno
- Department of Radiology, Mie University Hospital
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- Takafuji Masafumi
- Department of Radiology, Mie University Hospital
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- Nakamori Shiro
- Department of Cardiology, Mie University Hospital
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- Takase Shinichi
- Department of Radiology, Mie University Hospital
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- Ichiba Yoshito
- Siemens Healthcare K.K.
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- Komori Yoshiaki
- Siemens Healthcare K.K.
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- Dohi Kaoru
- Department of Cardiology, Mie University Hospital
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- Piccini Davide
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL) Center for Biomedical Imaging (CIBM) Advanced Clinical Imaging Technology, Siemens Healthcare AG
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- Bastiaansen Jessica A.M.
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL) Center for Biomedical Imaging (CIBM) Department of Diagnostic, Interventional and Pediatric Radiology (DIPR), Inselspital Bern University Hospital, University of Bern
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- Stuber Matthias
- Department of Diagnostic and Interventional Radiology, Lausanne University Hospital (CHUV) and University of Lausanne (UNIL) Center for Biomedical Imaging (CIBM)
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- Sakuma Hajime
- Department of Radiology, Mie University Hospital
抄録
<p>Free-running 5D whole-heart coronary MR angiography (MRA) is gaining in popularity because it reduces scanning complexity by removing the need for specific slice orientations, respiratory gating, or cardiac triggering. At 3T, a gradient echo (GRE) sequence is preferred in combination with contrast injection. However, neither the injection scheme of the gadolinium (Gd) contrast medium, the choice of the RF excitation angle, nor the dedicated image reconstruction parameters have been established for 3T GRE free-running 5D whole-heart coronary MRA. In this study, a Gd injection scheme, RF excitation angles of lipid-insensitive binominal off-resonance RF excitation (LIBRE) pulse for valid fat suppression and continuous data acquisition, and compressed-sensing reconstruction regularization parameters were optimized for contrast-enhanced free-running 5D whole-heart coronary MRA using a GRE sequence at 3T. Using this optimized protocol, contrast-enhanced free-running 5D whole-heart coronary MRA using a GRE sequence is feasible with good image quality at 3T.</p>
収録刊行物
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- Magnetic Resonance in Medical Sciences
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Magnetic Resonance in Medical Sciences 23 (2), 225-237, 2024
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