Tetsumura A, Yoshino N, Yamada I, Sasaki T
Department of Dental Radiology and Radiation Research, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
Neuroradiology. 1999 Feb;41(2):140-3. doi: 10.1007/s002340050720.
We evaluated the clinical effectiveness of contrast-enhanced three-dimensional (3D) magnetic resonance angiography (MRA) for diagnosing head and neck haemangiomas. We studied six patients using a magnetization prepared rapid acquisition gradient-echo (MP-RAGE) sequence on a 1.5-T system. Conventional T1- and T2-weighted and contrast-enhanced images were also obtained. The images were compared with histological findings. In four cavernous haemangiomas, a mass was partially visible as an enhancing lesion on the early phase of MRA, and was completely visible as a larger enhancing lesion in the late phase, showing slow blood flow. In two capillary haemangiomas, a mass was completely visible in the early phase showing fast flow. In all patients, MRA clearly showed both the haemangiomas and the external carotid artery branches. MRA allowed assessment of the relationship between the haemangiomas and the feeding arteries, and of the haemodynamics.
我们评估了对比增强三维（3D）磁共振血管造影（MRA）在诊断头颈部血管瘤方面的临床效果。我们在1.5-T系统上使用磁化准备快速采集梯度回波（MP-RAGE）序列对6例患者进行了研究。还获取了常规T1加权、T2加权和对比增强图像。将这些图像与组织学结果进行了比较。在4例海绵状血管瘤中，肿块在MRA早期部分可见为强化病变，在晚期可见为更大的强化病变，显示血流缓慢。在2例毛细血管瘤中，肿块在早期完全可见，显示血流快速。在所有患者中，MRA均清晰显示了血管瘤和颈外动脉分支。MRA能够评估血管瘤与供血动脉之间的关系以及血流动力学情况。
