3-DIMENSIONAL FAST SPIN-ECHO IMAGING - PULSE SEQUENCE AND IN-VIVO IMAGE EVALUATION
3-DIMENSIONAL FAST SPIN-ECHO IMAGING - PULSE SEQUENCE AND IN-VIVO IMAGE EVALUATION
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DOI：
10.1002/jmri.1880030617
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发表时间：
1993-11-01
期刊：
影响因子：
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通讯作者：
RAND, SD
中科院分区：
文献类型：
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作者：
YUAN, C;SCHMIEDL, UP;RAND, SD
三维（3D）磁共振成像允许薄切片采集，因此比传统的二维自旋回波成像更精确的多平面重建。不幸的是，增加第三架采集飞机大大延长了成像时间。随着梯度回波技术的发展，三维图像采集在临床上变得非常有用。然而，与自旋回波技术相比，这些技术受到磁化率和其他场非均匀性伪影以及降低的信噪比的限制。作者描述了一种真正的自旋回波3D技术的实现，通过使用快速自旋回波参数，将采集时间减少到临床有用的水平。论证了该技术的潜在应用。
Three-dimensional (3D) magnetic resonance imaging allows thin-section acquisition and therefore more accurate multiplanar reconstruction than conventional two-dimensional spin-echo imaging. Unfortunately, addition of a third acquisition plane extends imaging time greatly. With gradient-echo techniques, 3D acquisitions have become clinically useful. These techniques are limited, however, by susceptibility and other field inhomogeneity artifacts and decreased signal-to-noise ratios compared with spin-echo techniques. The authors describe implementation of a true spin-echo 3D technique that, by using fast spin-echo parameters, reduces acquisition time to a clinically useful level. Potential applications of the technique are demonstrated.