Objective To explore the factors affecting the results of transcranial Doppler（TCD）ultrasonography in individuals

and to provide scientific basis for prevention and treatment of intracranial vascular abnormalities and chronic non-infectious diseases in individuals.Methods Random cluster sampling was used to select 317 patients who had undergone a health checkup and received a TCD test in a hospital in Chengdu in April and November 2018.The basic information and health information of all subjects were collected and analyzed with reference to their TCD results.Results Two hundred and thirteen cases had abnormal TCD results

and the detection rate was 67.2%.The difference in the detection rate of TCD abnormalities between subjects with different smoking frequency and drinking frequency was statistically significant（P<0.05）.The higher the frequency of drinking

the higher the detection rate of TCD abnormalities among the subjects.The age

systolic blood pressure

diastolic blood pressure

blood glucose level

blood uric acid level

and body mass index（BMI）of male subjects with normal TCD results were lower than those with abnormal TCD results

and the differences were statistically significant（P<0.05）;the age

systolic blood pressure

diastolic blood pressure

blood glucose level

and blood uric acid level of female subjects with normal TCD results were lower than those with abnormal TCD results

and the differences were statistically significant（P<0.05）.Multivariate Logistic regression analysis found that for both male and female subjects

blood glucose level was a risk factor for abnormal TCD results（P<0.05）.Conclusion TCD test can accurately reflect the hemodynamic changes caused by intracranial arteriosclerosis

etc

help identify individuals at high risk for diabetes and hypertension

and predict the occurrence of cerebrovascular disease in patients with diabetes and hypertension.