Korogi Y, Takahashi M, Sakamoto Y, Shinzato J
Department of Radiology, Kumamoto University School of Medicine, Kumamoto, Japan.
Radiology. 1991 Jul;180(1):235-7. doi: 10.1148/radiology.180.1.2052701.
Dynamic magnetic resonance (MR) images were evaluated and compared with conventional T1-weighted spin-echo (SE) images obtained before and after administration of gadopentetate dimeglumine in 20 patients with normal cavernous sinuses. Starting 10 seconds after rapid injection of gadopentetate dimeglumine (0.1 mmol/kg), six to eight serial images were obtained every 30 seconds for 3-5 minutes. The venous spaces of the cavernous sinus were markedly enhanced 30 seconds after injection. Cranial nerves III and IV, V1 and VI, and V2 were seen on 75% of dynamic images each; they were seen, respectively, on 62%, 30%, and 28% of conventional postcontrast images. The medial wall was demarcated on 90% of dynamic, 15% of precontrast, and 55% of postcontrast images. A small area of connective tissue was identified within the cavernous sinus on dynamic images showing gradual enhancement. It is concluded that dynamic MR images proved useful in delineating and distinguishing abnormal tissue from normal structures.
对20例海绵窦正常患者的动态磁共振（MR）图像进行了评估，并与静脉注射钆喷酸葡胺前后获得的传统T1加权自旋回波（SE）图像进行了比较。在快速注射钆喷酸葡胺（0.1 mmol/kg）10秒后开始，每30秒获取6至8幅连续图像，持续3至5分钟。注射后30秒，海绵窦的静脉间隙明显强化。动眼神经、滑车神经、三叉神经眼支、展神经以及三叉神经上颌支在75%的动态图像上可见；它们分别在62%、30%和28%的传统增强后图像上可见。在90%的动态图像、15%的增强前图像和55%的增强后图像上可勾勒出内侧壁。在动态图像上，海绵窦内有一小片结缔组织显示逐渐强化。结论是，动态MR图像在区分异常组织与正常结构方面很有用。
