Fiirgaard B, Pedersen C B, Lundorf E
Neuroradiologisk afdeling, Arhus Kommunehospital.
Ugeskr Laeger. 1995 Dec 4;157(49):6855-9.
Some acoustic neuromas do not grow or grow very slowly. It is therefore of value to compare the results of measuring the size of acoustic neuromas by either CT or Magnetic Resonance Imaging (MRI) scanning with a view to being able to observe the growth rate of these tumours. Fifteen patients with acoustic neuromas had both CT- and MRI-scans performed. Two trained radiologists evaluated the size of the tumours in a blinded fashion. There was a significant difference between one observer's calculations from the CT- and the MRI-scans, and also a significant difference between the two observers' calculations from the CT-scans. No difference in calculating tumour size was found between the two observers' calculations from the MRI-scans. It is concluded that the size of acoustic neuromas i evaluated more equally by two observers using MRI-scans than when using CT-scans. By the use of repeated MRI-scanning it is possible to keep patients with acoustic nouromas under observation and avoid operation in those patients where the tumour does not grow.
一些听神经瘤不生长或生长非常缓慢。因此，比较通过计算机断层扫描（CT）或磁共振成像（MRI）扫描测量听神经瘤大小的结果，以便能够观察这些肿瘤的生长速度是有价值的。15例听神经瘤患者同时进行了CT和MRI扫描。两名训练有素的放射科医生以盲法评估肿瘤大小。一名观察者根据CT扫描和MRI扫描得出的计算结果之间存在显著差异，两名观察者根据CT扫描得出的计算结果之间也存在显著差异。两名观察者根据MRI扫描得出的肿瘤大小计算结果没有差异。得出的结论是，与使用CT扫描相比，两名观察者使用MRI扫描评估听神经瘤大小更为一致。通过重复进行MRI扫描，可以对听神经瘤患者进行观察，并避免对肿瘤不生长的患者进行手术。
