Vogl T J, Juergens M, Balzer J O, Mack M G, Bergman C, Grevers G, Lissner J, Felix R
Department of Radiology, University of Berlin, Clinic Rudolf Virchow, Germany.
Radiology. 1994 Jul;192(1):103-10. doi: 10.1148/radiology.192.1.8208919.
To evaluate the use of magnetic resonance (MR) angiography in the diagnosis of glomus tumors of the skull base.
In 40 patients with pulsatile tinnitus, spin-echo (SE) images, single sections, and maximum intensity projections from gradient-echo sequences, including arterial MR angiography and MR venography, were evaluated for tumor detection. Interpretations by two independent observers were correlated with findings from histologic examination, digital subtraction angiography, computed tomography, and clinical follow-up.
Glomus tumors were detected near the tympanic plexus (n = 8) and close to the superior (n = 8) and inferior (n = 1) ganglia of the vagus nerve. Sixteen of 18 proved tumors were detected with SE images alone. Although four high-lying jugular bulbs were misinterpreted as tumor due to similar signal intensity, combined evaluation allowed differentiation between tumor and sinusal blood flow in all cases.
The authors recommend combined SE imaging and MR angiography for ruling out tumor in patients with pulsatile tinnitus.
评估磁共振（MR）血管造影在颅底球瘤诊断中的应用。
对40例搏动性耳鸣患者的自旋回波（SE）图像、单层面图像以及梯度回波序列的最大强度投影图像（包括动脉MR血管造影和MR静脉造影）进行肿瘤检测评估。由两名独立观察者进行的解读与组织学检查、数字减影血管造影、计算机断层扫描及临床随访结果进行相关性分析。
在鼓室丛附近（n = 8）以及靠近迷走神经上神经节（n = 8）和下神经节（n = 1）处检测到球瘤。18例经证实的肿瘤中有16例仅通过SE图像检测到。尽管4个高位颈静脉球因信号强度相似被误判为肿瘤，但综合评估可在所有病例中区分肿瘤与窦内血流。
作者推荐联合使用SE成像和MR血管造影来排除搏动性耳鸣患者的肿瘤。
