ABSTRACT
Objective To investigate the application value of CT perfusion imaging (CTPI) combined with CT angiography (CTA) for determination and diagnosis of transient ischemic attack (TIA).Methods Totally 50 TIA patients from April 2014 to April 2016 in the neurology department of some hospital underwent examinations by CT scan,CTPI and CTA in time,and the values of cerebral blood volume (CBV),cerebral blood flow (CBF),mean transit time (MTT) and time to peak (TTP) were calculated at the uninjured and injured sides of the areas of interest.The relationship between cerebral blood perfusion and cerebral angiostenosis of the TIA patient was analyzed.Results The 50 patients had the values of CBF and CBV at the injured sides lower while the ones of MTI and TTP higher than those at the uninjured sides (P＜0.05).The numbers of the abnormal cerebral blood perfusion patients found by CT scan,CTPI and CTA were 28 (56.00％),45 (90.00％) and 38 (76.00％) respectively,who were confirmed clinically simultaneously.There were significant differences between the TIA positive result rates by CT scan,CTPI and CTA (P＜0.05).Conclusion Carotid artery hypoperfusion is one of the pathogeneses of TIA,and positive rate by CTPI is closely related to the conditions of TIA.CTPI combined with CTA contributes to the diagnosis of TIA,and can be used for its individualized treatment.