To describe and to illustrate essential features and diagnostic clue detected by MDCT-angiography and brain MDCT-perfusion in case of diagnosed subclavian steal syndrome.
The subclavian steal syndrome (SSS)consist of significant obstruction or occlusion proximal subclavian artery segment and retrograde flow in ipsilateral vertebral artery (subclavian steal fenomenon) associated with cerebral ischemic symptoms. The cerebral symptoms of SSS could include paroxysmal vertigo and drop attacks,
but SSS might be asymptomatic too,
with arm claudication only.
 Among different reasons of SSS the most common is atherosclerotic vessel disease.
Findings and procedure details
Patients with diagnosed subclavian steal syndrome underwent 256-MDCT-angiography before planed endovascular treatment. At first we qualifyed arch elongation and arch vessel configuration with aims of to recognize the type of aortic arch.
There are three types of aortic arches but some authors have also suggested a type IV. I Type : the arch vessels arise next to each other from arch in the same horizontal plane (Fig.1). II Type : the brahiocephalic vessels arise not far from each other...
The major role of MDCT-angiography in diagnostic of subclavian steal syndrome is to define supra-aortic vessel anatomy for optimal planning endovascular treatment and detecting abnormalities in a region out of reach of ultrasonography.
Brain MDCT- perfusion can be applied for estimation of nonspecific appearance of cerebral ischemic.
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