Comparison of the results between transcranial Doppler ultrasonography and CT examination of patients with transient ischemic attack
- VernacularTitle:短暂性脑缺血发作患者经颅多普勒超声和CT检查结果比较
- Author:
Yaping LI
- Publication Type:Journal Article
- From:
Chinese Journal of Tissue Engineering Research
2005;9(25):194-195
- CountryChina
- Language:Chinese
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Abstract:
BACKGROUND: Transient ischemic attack is a risk factor in the causation of complete stroke. Early detection of transient ischemic attack by the examinations of imaging and ultrasonography together with timely interventions can prevent it from developing to complete stroke.OBJECTIVE: To compare the values of early transcranial Doppler ultrasonography and CT examination in the evaluation of early transient ischemic attack.DESIGN: A case analysis.SETTING: Department of Neurology, CT Room and Transcranial Doppler Ultrasonography Room in a municipal hospital.PARTICIPANTS: Thirty in- and out-patients with transient ischemic attack (22 males and 8 females), at the age of 26 to 85 with an average of 59.6 years old in the Yuanbaoshan District Hospital of Chifeng City between January 2001 and April 2003 were involved in the study.INTERVENTIONS: After admission, all the 30 patients with transient ischemic attack were given routine lose of medication for promoting blood circulation and invigorating pulse-beat, and heparin or low molecular hepacarin calcium; Cranial CT examination was performed for all selected patients, and the transcranial Doppler ultrasonic diagnostic system was also used to detect the related dynamic parameters of systolic and diastolic flow rate, mean flow velocity and pulse index of bilateral internal carotid artery and vertebral basilar artery. The occurrence of cerebral infarction was observed through follow up for 1 month and 1 year.MAIN OUTCOME MEASURES: ① Results of cranial CT examination;② Results of transcranial Doppler ultrasonography; ③ The occurrence of cerebral infarction in the 30 patients after follow up for 1 month and 1 year.RESULTS: All the 30 patients were followed up for 1 month and I year after discharge. ① Focal changes were detected with CT examination in 10 cases (34%, 10/34); ② Abnormal changes of hemorheology were detected with transcranial Doppler ultrasonography in 24 cases (80%, 24/30). ③ Among the 30 patients treated with heparin or low molecular hepacarin calcium, cerebral infarction occurred in 4 cases within 1 month, and 6 cases between 1 month and 1 year.CONCLUSION: For patients with transient ischemic attack, the hemorheological abnormality can be detected earlier with transcranial Doppler ultrasonography than with CT examination; treatment for anti-coagulation should be given as early as possible after the transient ischemic attack to reduce the reoccurrence rate and prevent the occurrence of complete stroke.
