MR projection angiography: Application in patients with cerebrovascular disease

2D-FT thick-slice projection images of flowing blood were produced as follows: a flow-sensitive image was obtained by suppressing within-view motion using completely rephase magnetization within the view. Correction for velocity as well as acceleration and pulsatility terms was made. A standard acquisition of the same region was then subtracted from the original image to produce the final vascular image. These techniques were used on normal volunteers as well as in patients with a variety of cerebro-vascular diseases including atherosclerosis and aneurysm. Comparison was made with other imaging studies such as CT, conventional angiography, and conventional MR. MR projection angiology is capable of producing moderate-resolution images on normal subjects and patients with cerebrovascular disease that correlate well with other x-ray imaging studies