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强大的未增强的外围磁共振血管造影使用单片3D化学转移编码的GRASE

Hyunkyung Maeng¹, Hahnsung Kim^2,3, Jeong-Woo Sohn⁴

¹Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Republic of Korea.

Physics in medicine and biology

|August 11, 2023

概括

一种新的磁共振血管造影 (MRA) 技术使用单片3D化学转移编码成像来创建清晰,未增强的外围MRA. 这种方法有效地抑制脂肪组织背景,改善小动脉的可视化.

科学领域:

医疗成像医学成像
生物物理学的生物物理.
放射学放射学是一门学科.

背景情况:

磁共振血管造影 (MRA) 对于可视化血管至关重要.
未增强的MRA通过避免对比剂提供优势.
强大的背景抑制,特别是脂肪组织,在MRA中仍然是一个挑战.

研究的目的:

开发和验证一种新的未经增强的MRA技术.
使用化学转移编码成像实现强大的背景抑制.
为了改善外围动脉的划线.

主要方法:

使用心脏门,单片3D梯度和自旋回声 (GRASE) 成像.
在无线电频率脉冲列车中内置可变翻转角度 (VFA).
采用化学转移编码和受约束的优化,用于信号分离之前的稀疏性.

主要成果:

与传统的新鲜血液成像 (FBI) 相比,拟议的方法证明了优越的脂肪背景抑制.
实现了小分支动脉的更清晰的划线.
展示了强大的性能,没有显著的信号损失.

结论:

成功开发了一种可行的单片3D VFA GRASE技术,使用化学转移编码重建.
这种方法可以实现强大的未增强的外围MRA.
在没有对比剂的血管成像中提供了一个有前途的替代方案.

关键词:

磁共振成像 (MRI) 是一种磁共振成像技术.脂肪与水分离的方法梯度和旋转回声 (格雷斯)非对比增强磁共振血管图 (NCE-MRA)

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Magnetic Resonance Imaging

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