Flow MR fingerprinting
Flow MR fingerprinting
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DOI：
10.1002/mrm.27588
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发表时间：
2019-04-01
影响因子：
3.3
通讯作者：
Schmitter, Sebastian
中科院分区：
文献类型：
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作者：
Flassbeck, Sebastian;Schmidt, Simon;Schmitter, Sebastian
目的：研究磁共振指纹框架中量化血速的可行性，同时提供静态组织的松弛计图。方法：将双极梯度插入基于SSFP的MRF序列中以实现速度依赖性信号阶段，从时间分辨速度分量定量。在体内和幻影研究中验证了宽松测图和速度定量的准确性。分析：模拟确定即使对于强心脏周期长度变化（700-1400 ms），流量MRF可以确定准确的速度映射偏差
Purpose: To investigate the feasibility to quantify blood velocities within the magnetic resonance fingerprinting framework, while providing relaxometric maps of static tissue.Methods: Bipolar gradients are inserted into an SSFP-based MRF sequence to achieve velocity-dependent signal phases, allowing tri-directional time-resolved velocity component quantification. The accuracy of both relaxometric mapping and velocity quantification was validated in vivo and in phantom studies.Results: Simulations determined that even for strong cardiac cycle length variations (700-1400 ms) Flow-MRF determines accurate velocity maps deviating