[Imaging characteristics of PROPELLER T2-weighted imaging].
[Imaging characteristics of PROPELLER T2-weighted imaging].
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PROPELLER T2加权成像的成像特点[J].
DOI：
10.6009/jjrt.kj00003326583
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
K. Ohtomo
中科院分区：
文献类型：
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作者：
M. Goto;S. Aoki;N. Hayashi;H. Mori;Yasushi Watanabe;Kenji Ino;Y. Satake;K. Nishida;Haruo Sato;Kyouhito Iida;K. Mima;K. Ohtomo
由于PROPELLER序列是径向扫描和快速自旋回波(FSE)序列的组合，因此可以将其视为具有运动相关性的FSE序列。然而，由于k空间轨迹的差异，PROPELLER和FSE之间存在一些差异。与常规 FSE T2WI 相比，我们阐明了 PROPELLER T2 加权成像（T2WI）在不同参数下的成像特征。当使用相同的参数时，PROPELLER T2WI 表现出比通常的 FSE 更高的信噪比 (SNR) 和更低的空间分辨率。有效回波时间（TE）随着PROPELLER上不同回波序列长度（ETL）或不同带宽的变化而变化，成像对比度也相应变化以更加有效。
As the PROPELLER sequence is a combination of the radial scan and fast-spin-echo (FSE) sequence, it can be considered an FSE sequence with a motion correlation. However, there are some differences between PROPELLER and FSE owing to differences in k-space trajectory. We clarified the imaging characteristics of PROPELLER T2-weighted imaging (T2WI) for different parameters in comparison with usual FSE T2WI. When the same parameters were used, PROPELLER T2WI showed a higher signal-to-noise ratio (SNR) and lower spatial resolution than usual FSE. Effective echo time (TE) changed with different echo train lengths (ETL) or different bandwidths on PROPELLER, and imaging contrast changed accordingly to be more effective.