Arlart I P, Guhl L, Fauser L, Laub G, Edelman R R
Radiologisches Institut, Katharinenhospital, Stuttgart.
Rofo. 1991 May;154(5):488-94. doi: 10.1055/s-2008-1033172.
Flowing blood can be demonstrated as bright signal in MR-imaging resulting in MR-angiography (MRA). This study presents the results of MRA using the "time of flight"-effect in which projection angiograms along the longitudinal axis were established by a row of 2D-gradient echo (GE) images (FLASH) in breath-hold technique. The method was proven in 5 normal volunteers and evaluated against DSA in 21 patients with aortic diseases. The preliminary results demonstrate a satisfactory flow signal in the normally perfused aorta; thus occlusions, stenoses, and aneurysms could be defined clearly. In smaller vessels the signal was still insufficient. Diagnostic problems of vascular overlapping can be solved in most cases by rotating the angiograms, and by additional analysis of individual 2D-GE images. In the present form the quality of MRA is still inferior to that of DSA.
流动的血液在磁共振成像（MR-成像）中可表现为明亮信号，从而实现磁共振血管造影（MRA）。本研究展示了利用“飞行时间”效应进行MRA的结果，其中通过屏气技术获取的一排二维梯度回波（GE）图像（快速小角度激发序列（FLASH））建立沿纵轴的投影血管造影。该方法在5名正常志愿者中得到验证，并在21例主动脉疾病患者中与数字减影血管造影（DSA）进行对比评估。初步结果表明，在正常灌注的主动脉中流动信号令人满意；因此，可清晰界定闭塞、狭窄和动脉瘤。在较小血管中，信号仍不足。血管重叠的诊断问题在大多数情况下可通过旋转血管造影以及对单个二维GE图像进行额外分析来解决。以目前的形式，MRA的质量仍低于DSA。
