Assessment of collateral circulation in ischemic stroke

Ischemic stroke is a common disease of the nervous system, and its early diagnoses and treatments, prognoses become global concerns. In the event of stroke, the blood flow reperfusion in the ischemic area can be achieved by establishing arterial recanalization or collateral circulation. Moreover, the degree of collateral circulation compensatory plays an important role in the pathophysiology of occurrence, development and outcomes of ischemic stroke. A comprehensive assessment of collateral circulation in clinical practice is the key to the treatment of ischemic stroke. This paper summarizes the imaging assessment techniques of collateral circulation. Key words: Ischemic stroke; Collateral circulation; Imaging technique