Schima W, Wimberger D, Schneider B, Stiglbauer R, Asenbaum S, Imhof H
Universitätsklinik für Radiodiagnostik, MR-Institut der Medizinischen Fakultät, Wien.
Rofo. 1993 Apr;158(4):368-71. doi: 10.1055/s-2008-1032665.
The value of magnetic resonance (MR) to establish the diagnosis of multiple sclerosis (MS) is well known. This study was undertaken to compare MR imaging of the brain of MS patients at high (1.5T) and mid (0.5T) field strength. 25 patients with MS underwent two consecutive MR studies within one hour, each consisting of axial proton density and T2-weighted spin-echo images. Lesions in the supratentorial white matter and corpus callosum and those in the brain stem and cerebellum were separately counted. At 1.5T significantly more lesions were seen than at 0.5T (p < 0.05). Although T2-weighted images at 1.5T added significant information compared to images obtained at 0.5T, in none of our 25 patients the diagnosis was missed at 0.5T. However, at 1.5T dissemination in space was better demonstrated, suggesting MR scanning with high field-units to be favourable in patients with clinically suspected MS.
磁共振成像（MR）对于多发性硬化症（MS）诊断的价值已广为人知。本研究旨在比较高场强（1.5T）和中场强（0.5T）下MS患者脑部的MR成像。25例MS患者在1小时内连续接受了两次MR检查，每次检查均包括轴位质子密度和T2加权自旋回波图像。分别对幕上白质、胼胝体以及脑干和小脑中的病灶进行计数。在1.5T场强下观察到的病灶明显多于0.5T场强（p < 0.05）。尽管与0.5T场强下获得的图像相比，1.5T场强下的T2加权图像增加了重要信息，但在我们的25例患者中，0.5T场强下均未漏诊。然而，在1.5T场强下能更好地显示空间播散，这表明对于临床疑似MS的患者，使用高场强设备进行MR扫描更为有利。
