| Objective:Old people in the posterior circulation ischemia is common in dailylife, but also the ischemic cerebrovascular disease clinical common to all suspected,after the patients should undertake circular ischemia neural imaging examination. Theexisting imaging examination method for the diagnosis of the posterior circulationischemia in each have an advantage, but is still rare combined application at home andabroad vascular ultrasound examination and CT angiography imaging to evaluate theposterior circulation related literature, this study is to investigate the color dopplerultrasound examination (CDFI) and CT angiography (CTA) imaging (PCI), thecirculation ischemia in the clinical research, diagnostic value to the posteriorcirculation ischemia early diagnosis and treatment to provide the reference.Methods:According to the China posterior circulation ischemia experts consensus"proposes PCI concept, collect in September 2010 to 2011 March in neural medicalinpatient and outpatient diagnosis for PCI, according to 80 cases of patients withclinical symptoms and MR performance will cases into TIA group and infarction after80 cases of control group, the posterior circular ischemia (PCI) patients were doneCDFI and CTA check, B ultrasonic observation neck artery go line, inside - the filmthickness, lumen in without atherosclerotic plaque within, and plaques echo properties;CTA observation vertebral artery situation, hook; without joint hyperplasia vertebraljoints Joint two inspections and the results were compared with MRA, and the resultswere compared.Results (1) the rate of 90% CDFI inspection (72 cases), in CDFI observationgroup, infarction occupied 85%, higher than vulnerable plaques or 52.7%, two groupsof TIA significant difference (χ~2 = 30.136, P < 0.01); After vulnerable plaques group(52.6%) circular infarction incidence (significantly higher stability plaques) groups(27.7%) (χ~2 = 7.413, P = 0.006) and no plaques group (26.7%) (χ~2 = 5.863, P = 0.015); Infarction group found vertebral artery anomalies of positive (62.5%) changesignificantly higher than TIA group (27.5%), two groups of differences significant (χ~2= 28.256, P < 0.01); (2) the rate of check CTA joys (74 cases), infarctionvertebrobasilar artery anomalies in the group is obviously higher than the incidence ofTIA(18.25%), both difference has significant meaning (χ~2 = 35.134, P < 0.01); (3) toCDFI and CTA check joint posterior circulation ischemia detection rate for 96%,contrast infarction group and TIA group distribution of the posterior circulationanomalies and found two groups of differences have clinical significance (χ~2 = 9.028,P = 0.029). Infarction after intracranial arteries of circulating abnormal rate (43.5%)and intracranial merger extracranial artery anomalies rate (12.9%) were significantlyhigher TIA group (11.8%) respectively, TIA 22.6% and posterior circulationextracranial artery of abnormal rate (25.8%) significantly higher infarction group(21%). Infarction after intracranial arteries of circulating abnormal rate (43.5%)higher than extracranial artery anomalies rate (21%); TIA group of the posteriorcirculation extracranial artery anomalies rate (25.8%) higher than intracranial arteryanomalies rate (22.6%).Conclusion (1) by identifying CDFI PCI vertebral artery of extracranialatherosclerotic plaque, be helpful for improving the detection vulnerable plaques aftercycle after cycle infarction patients, the more vulnerable plaques a TIA patients, helpto predict severe common PCI events. (2) the PCI circulation vasculopathydistribution characteristics, infarction with intracranial arteries of mainly byextracranial, TIA group mainly arteries; Hemal stricture of those infarction afterintracerebral section of circular ascendant, TIA group to narrow of extracranialnarrow dominant. (3) CTA vertebrobasilar artery and clear display and the wholeanatomic relationship of cervical vertebral artery inflows hole, the show has obviousadvantages; (4) joint CDFI and CTA detection technology diagnosis PCI is accurateand reliable, especially in the evaluation of the lesions hemal respect, has its uniqueadvantage.
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