It can identify a significantly elevated velocity in the proximal subclavian artery (i.e., >300 cm/s), as well as a change in its waveform from the normal triphasic appearance to a more biphasic ...

Angiography (Fig. 5) revealed marked stenosis of the left subclavian artery proximal to the origin of the left vertebral artery, which was of good caliber and supplied collateral flow to the right ...

There are a paucity of data in the literature regarding the natural history in patients with subclavian artery occlusive disease. The left subclavian artery is more frequently involved than the ...