Optimal Protocol for Contrast-enhanced Free-running 5D Whole-heart Coronary MR Angiography at 3T

被引：7
|
作者：
Ishida, Masaki [1 ]
Yerly, Jerome [2 ,3 ,4 ]
Ito, Haruno [1 ]
Takafuji, Masafumi [1 ]
Nakamori, Shiro [5 ]
Takase, Shinichi [1 ]
Ichiba, Yoshito [6 ]
Komori, Yoshiaki [6 ]
Dohi, Kaoru [5 ]
Piccini, Davide [2 ,3 ,4 ,7 ]
Bastiaansen, Jessica A. M. [2 ,3 ,4 ,8 ]
Stuber, Matthias [2 ,3 ,4 ]
Sakuma, Hajime [1 ]
机构：
[1] Mie Univ Hosp, Dept Radiol, 2-174 Edobashi, Tsu, Mie 5148507, Japan
[2] Lausanne Univ Hosp CHUV, Dept Diagnost & Intervent Radiol, Lausanne, Switzerland
[3] Univ Lausanne UNIL, Lausanne, Switzerland
[4] Ctr Biomed Imaging CIBM, Lausanne, Switzerland
[5] Mie Univ Hosp, Dept Cardiol, Tsu, Mie, Japan
[6] Siemens Healthcare KK, Tokyo, Japan
[7] Siemens Healthcare AG, Adv Clin Imaging Technol, Lausanne, Switzerland
[8] Univ Bern, Dept Diagnost Intervent & Pediat Radiol DIPR, Inselspital Bern Univ Hosp, Bern, Switzerland
来源：
MAGNETIC RESONANCE IN MEDICAL SCIENCES | 2024年 / 23卷 / 02期
基金：
瑞士国家科学基金会;
关键词：
contrast medium; coronary Magnetic Resonance angiography; fat suppression; free-running framework; gradient echo; VISUALIZATION;
D O I：
10.2463/mrms.tn.2022-0086
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
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.
引用
收藏
页码：225 / 237
页数：13
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