Schubeus P, Sander B, Schörner W, Tosch U, Lanksch W R, Felix R
Radiologische Klinik mit Poliklinik, Freie Universität Berlin.
Rofo. 1990 Oct;153(4):461-6. doi: 10.1055/s-2008-1033415.
A study has been carried out to evaluate contrast and image quality of cervical structures using multislice 2D-flash sequences with long repetition times (TR = 400 ms.) and short echo delay times (TE = 5.8 ms.). The examinations were carried out using ten normals with an MRI of 1.5 Tesla and flip angles of 10, 20, 30, 50, 70 and 90 degrees. The best contrast between intervertebral disc and surrounding tissue was obtained between 50 and 70 degrees, best contrast between compact bone and CSF with 10 degrees. In order to demonstrate degenerative changes of the cervical spine, it appears sensible to use a combination of these angles. The described sequences produce good images of the cervical structures with little image degradation. Compared to T1-weighted spin-echo sequences, the method has a number of significant advantages, such as variations in image contrast, higher maximal number of slices, contiguous imaging and less imaging time.
已开展一项研究，使用具有长重复时间（TR = 400毫秒）和短回波延迟时间（TE = 5.8毫秒）的多层二维快速成像序列来评估颈椎结构的对比度和图像质量。使用10名正常人进行检查，采用1.5特斯拉的磁共振成像，翻转角分别为10度、20度、30度、50度、70度和90度。椎间盘与周围组织之间的最佳对比度在50度至70度之间获得，致密骨与脑脊液之间的最佳对比度为10度。为了显示颈椎的退行性改变，使用这些角度的组合似乎是明智的。所描述的序列能产生颈椎结构的良好图像，且图像退化很少。与T1加权自旋回波序列相比，该方法具有许多显著优点，如图像对比度变化、更高的最大切片数、连续成像和更短的成像时间。
