SNAPSHOT FLASH MRI - APPLICATIONS TO T1, T2, AND CHEMICAL-SHIFT IMAGING
SNAPSHOT FLASH MRI - APPLICATIONS TO T1, T2, AND CHEMICAL-SHIFT IMAGING
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DOI：
10.1002/mrm.1910130109
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发表时间：
1990-01-01
影响因子：
3.3
通讯作者：
HAASE, A
中科院分区：
文献类型：
--
作者：
HAASE, A
快照FLASH磁共振成像技术已被开发用于实现MR参数的实时成像。该方法的第一个实现是基于64 × 104的一个微处理器。使用改进的MR系统硬件条件，在200 ms内采集128幅FLASH断层图像。通过使用小于5 °的翻转角，在FLASH MRI中获得的软组织对比几乎消失。和重复时间为3毫秒。这项工作描述了扩展的FLASH MRI将传统的MR实验之前，整个成像序列。这将创建任何所需对比度的图像，而无需更改测量时间。反转恢复T1，自旋回波T2，化学位移选择性和光谱FLASH MRI的例子。进一步扩展的实时磁共振血管，扩散系数，结合二维磁共振波谱实验，和其他核进行了讨论。
Snapshot FLASH magnetic resonance imaging techniques have been developed to enable real-time imaging of MR parameters. The first realization of the method is based on a 64 .times. 128 FLASH tomogram acquired within 200 ms, using improved MR system hardware conditions. The soft tissue contrast obtained in FLASH MRI almost disappears by using flip angles of less than 5.degree. and repetition times of 3 ms. This work describes extensions of FLASH MRI placing conventional MR experiments before the whole imaging sequence. This creates images of any desired contrast without changing the measuring time. Examples of inversion-recovery T1, spin-echo T2, chemical-shift-selective, and spectroscopic FLASH MRI are presented. Further extensions of real-time MRI of blood vessels, diffusion coefficients, combination with two-dimensional MR spectroscopy experiments, and other nuclei are discussed.