Floris R, Crecco M, Squillaci E, Grandinetti M L, Sergiacomi G L, Guazzaroni M, Squillaci S, Simonetti G
Istituto di Radiologia, Università degli Studi di Roma Tor Vergata.
Radiol Med. 1993 Jan-Feb;85(1-2):34-9.
To date, magnetic resonance angiography (MRA) has been used in neuroradiology mainly to study vascular malformations and atherosclerotic changes of the carotid bifurcation. Our study was aimed at investigating the role of MRA with the time-of-flight technique in the study of intracranial neoplasms; a superconductive 1.5 T magnet was used, and FLASH and FISP 2D and 3D pulse sequences were acquired before and after Gd-DTPA administration. Fifty-five MRA examinations were performed. Our series consists in 32 meningiomas, 14 glial tumors, 3 hypophysis adenomas, 2 metastases, 1 NF2, 2 craniopharyngiomas, 1 lymphoma and 1 rhinopharyngeal carcinoma with intracranial involvement. In 27 patients MRA results were compared with DSA findings. The results showed high agreement relative to indirect angiographic patterns (dislocations, encasement, dural sinuses involvement) and poor accuracy in the demonstration of tumor vascularization (inflow and outflow, vascular neoformation).
迄今为止，磁共振血管造影（MRA）在神经放射学中主要用于研究血管畸形和颈动脉分叉处的动脉粥样硬化改变。我们的研究旨在探讨飞行时间技术的MRA在颅内肿瘤研究中的作用；使用了一台超导1.5T磁体，并在注射钆喷酸葡胺（Gd-DTPA）前后采集了快速小角度激发（FLASH）和快速成像稳态进动（FISP）二维及三维脉冲序列。共进行了55次MRA检查。我们的病例系列包括32例脑膜瘤、14例胶质瘤、3例垂体腺瘤、2例转移瘤、1例神经纤维瘤病2型（NF2）、2例颅咽管瘤、1例淋巴瘤和1例累及颅内的鼻咽癌。对27例患者的MRA结果与数字减影血管造影（DSA）结果进行了比较。结果显示，在间接血管造影模式（移位、包绕、硬脑膜窦受累）方面一致性较高，而在显示肿瘤血管形成（流入和流出、新生血管）方面准确性较差。
