Moon W K, Chang K H, Cho S Y, Han M H, Cha S H, Chi J G, Han M C
Department of Diagnostic Radiology, Seoul National University College of Medicine, Korea.
Radiology. 1993 Sep;188(3):751-7. doi: 10.1148/radiology.188.3.8351344.
Fourteen magnetic resonance (MR) images of 11 patients with cerebral sparganosis were reviewed retrospectively and compared with 13 computed tomographic (CT) scans of 10 of the patients. All patients underwent both nonenhanced and contrast material-enhanced MR imaging. All white matter degenerations, which were slightly hypointense on T1-weighted images and were hyperintense on T2-weighted images, were seen as areas of low attenuation on CT scans. Better contrast between normal and degenerated brain tissues was seen at MR, and two lesions were seen that were missed at CT. The parasitic granuloma was isointense to brain parenchyma on images obtained with all pulse sequences. On two follow-up MR images, location or shape of the enhancing lesions changed, suggesting migration of the worm. A new finding of hyperintensity on T1-weighted images and hypointensity on T2-weighted images in subcortical areas probably due to petechial hemorrhages was demonstrated in eight patients only at MR. Small calcific foci, which were important diagnostic clues of cerebral sparganosis, were detected in four patients only at MR, while they were seen in eight patients at CT.
回顾性分析了11例脑裂头蚴病患者的14张磁共振（MR）图像，并与其中10例患者的13张计算机断层扫描（CT）图像进行比较。所有患者均接受了平扫和对比剂增强MR成像。所有白质变性在T1加权图像上呈轻度低信号，在T2加权图像上呈高信号，在CT扫描上表现为低密度区。MR显示正常脑组织与变性脑组织之间的对比度更好，且发现了2个CT漏诊的病变。在所有脉冲序列图像上，寄生性肉芽肿与脑实质呈等信号。在两张随访MR图像上，强化病变的位置或形态发生改变，提示虫体迁移。仅在MR上，发现8例患者皮质下区域T1加权图像呈高信号、T2加权图像呈低信号，可能是由于瘀点样出血所致。仅在MR上，4例患者检测到小钙化灶，这是脑裂头蚴病的重要诊断线索，而在CT上8例患者可见。
