3.In recent years, the mainly development of CT technology are from non- spiral CT to spiral CT, from single-slice spiral CT to multi-slice spiral CT, from simple source spiral CT to double source spiral CT.
9.Methods 38 cases clinically suspected of arteriosclerotic occlusive disease of lower extremities underwent CT angiography using a 16-slice scanner with range from abdominal aortic -renal arterial level to ankle joint, slice increment 2.5mm, pitch 1.375:1, reconstruction increment 1.25mm.
10.In this slice, the lesion extends from near the occipital pole to the Sylvian fissure, conforming to the territory of the posterior branch of the middle cerebral artery.
