Just M, Higer H P, Grigat M, Voth D, Bockenheimer S, Pfannenstiel P
Digitale Bilddiagn. 1986 Dec;6(4):156-60.
Synthetic images of the tumour region were computed in the case of ten meningiomas for the purpose of determining retrospectively pulse sequences and sequence parameters supplying an optimal contrast between tumour and adjacent tissue in plain imaging. It was found that best results were obtained via the partial saturation/spin-echo sequence with a long recovery time (TR approximately greater than 2,000 msec) and a long maximum echo delay (TE max approximately greater than 200 msec). A comparable contrast quality can be attained by using the inversion-recovery sequence with an inversion time T1 approximately 450 msec. Nevertheless, it was not possible in our study to identify two small meningiomas with a diameter of just below one centimetre by studying the MR tomogram.
为了回顾性地确定在平扫成像中能在肿瘤与相邻组织之间提供最佳对比度的脉冲序列和序列参数，针对10例脑膜瘤计算了肿瘤区域的合成图像。结果发现，通过具有长恢复时间（TR约大于2000毫秒）和长最大回波延迟（TE max约大于200毫秒）的部分饱和/自旋回波序列可获得最佳结果。使用反转时间T1约为450毫秒的反转恢复序列可达到类似的对比度质量。然而，在我们的研究中，通过研究磁共振断层图像无法识别出两个直径略小于1厘米的小脑膜瘤。
