Wilms G, Bosmans H, Marchal G, Demaerel P, Goffin J, Plets C, Baert A L
Department of Radiology, University Hospitals K.U. Leuven, Belgium.
Neuroradiology. 1995 Jan;37(1):42-7. doi: 10.1007/BF00588518.
We compared magnetic resonance angiography (MRA) and intra-arterial digital subtraction angiography (IADSA) in the study of brain tumours and assessed the utility of gadolinium-enhanced MRA. We studied 17 patients with supratentorial brain tumors. The entire brain was imaged with multiple overlapping thin volume acquisitions. After IV injection of gadolinium-DTPA, a single thick-slab MRA acquisition was performed. Standard three-dimensional (3D-TOF) acquisitions (in six patients) and 3D-TOF with magnetization transfer prepulse and tilted optimisation nonsaturing radiofrequency excitation pulses (in 11 patients) were used. Displacement of the anterior cerebral artery, main stem and insular branches of the middle cerebral artery was seen well on unenhanced and contrast-enhanced MRA. Displacement of the lenticulostriate and anterior choroidal arteries was seen only once, after Gadolinium. Tumour encasement of the middle cerebral artery was demonstrated in one patient. Tumour vessels were seen in 2 of 8 cases before and 3 of 8 after gadolinium; Tumour hypervascularity was seen only after gadolinium, in 3 of 8 cases. Study of the veins was possible only on gadolinium-enhanced MRA. Displacement of the venous angle was seen in 4 of 7 patients in the frontal, and in all of 8 patients on the lateral projections. Early venous drainage was not seen. Patency of the dural venous sinuses was demonstrated in all patients, but in one neoplastic occlusion of a cortical vein was recognized.
我们比较了磁共振血管造影（MRA）和动脉内数字减影血管造影（IADSA）在脑肿瘤研究中的应用，并评估了钆增强MRA的效用。我们研究了17例幕上脑肿瘤患者。通过多次重叠薄层容积采集对整个脑部进行成像。静脉注射钆-DTPA后，进行单次厚层板MRA采集。使用了标准三维（3D-TOF）采集（6例患者）以及带有磁化传递预脉冲和倾斜优化非饱和射频激发脉冲的3D-TOF采集（11例患者）。在未增强和对比增强的MRA上，大脑前动脉、大脑中动脉主干和岛叶分支的移位显示良好。豆纹动脉和脉络膜前动脉的移位仅在注射钆后出现过一次。1例患者显示大脑中动脉被肿瘤包绕。8例患者中，2例在注射钆之前可见肿瘤血管，3例在注射钆之后可见；仅在注射钆后，8例中有3例可见肿瘤血管增多。仅在钆增强MRA上才能对静脉进行研究。7例额叶患者中有4例以及8例外侧位投影患者中均可见静脉角移位。未见早期静脉引流。所有患者的硬脑膜静脉窦均通畅，但1例患者发现一条皮质静脉有肿瘤性闭塞。
