Heuck A, Sittek H, Seelos K, Kreft B, Hermanns M, Reiser M
Institut für Radiologische Diagnostik, Klinikum Grosshadern, Universität München.
Rofo. 1994 Jun;160(6):538-45. doi: 10.1055/s-2008-1032473.
Markedly T2-weighted MR images of the pelvis can be obtained with TSE sequences using short acquisition times. In order to determine whether TSE sequences at 0.5 Tesla produce diagnostically valuable images, 9 normals and 53 patients with suspected gynaecological tumours were examined with TSE and SE sequences. Visual comparison showed a considerable superiority of the TSE sequences in most respects. The quality of the TSE images was regarded as very good in 82% and good in 18% (SE sequences: 27% very good, 55% good, 18% moderate), delineation of anatomical structures 81% very good and 19% good (SE sequence: 31% very good, 53% good, 16% moderate). TSE sequences were also superior in the detection of pathological changes (87% very good, 13% good) compared with SE sequences (56% very good, 37% good, 7% moderate). Venous plexuses in the parametrium were better demonstrated by SE sequences. There were significantly higher signal to noise ratios (SNR) with TSE sequences for fat, bone marrow (each p < 0.001), and urine (p < 0.05). Using muscle as reference tissue, there were significantly higher signal-difference to noise ratios (SDR) for fat (p < 0.001), and bone marrow (p < 0.0001), the other pelvic organs and tumours showed no significant differences between the SNR and SDR. TSE sequences are well suited to replace SE sequences in the MR diagnosis of gynaecological tumours.
使用TSE序列并采用短采集时间可获得骨盆明显的T2加权磁共振图像。为了确定0.5特斯拉的TSE序列是否能产生具有诊断价值的图像，对9名正常人和53名疑似妇科肿瘤患者进行了TSE序列和SE序列检查。视觉比较显示TSE序列在大多数方面具有相当大的优势。TSE图像质量被认为非常好的占82%，好的占18%（SE序列：非常好占27%，好占55%，中等占18%），解剖结构的描绘非常好的占81%，好的占19%（SE序列：非常好占31%，好占53%，中等占16%）。与SE序列相比，TSE序列在检测病理变化方面也更具优势（非常好占87%，好占13%）（SE序列：非常好占56%，好占37%，中等占7%）。SE序列能更好地显示子宫旁组织中的静脉丛。TSE序列在脂肪、骨髓（各p < 0.001）和尿液（p < 0.05）方面具有显著更高的信噪比（SNR）。以肌肉作为参考组织，脂肪（p < 0.001）和骨髓（p < 0.0001）的信号差异与噪声比（SDR）显著更高，其他盆腔器官和肿瘤在SNR和SDR之间无显著差异。TSE序列非常适合在妇科肿瘤的磁共振诊断中取代SE序列。
