Study on the Diagnostic Aaccuracy of TCD for Intracranial and Extracranial Arterial Stenosis in Patients with Acute Ischaemic Stroke
- VernacularTitle:经颅多普勒超声对急性缺血性脑卒中患者颅内外血管狭窄诊断准确性的研究
- Author:
Lie ZANG
;
Rubo SUI
;
Lei ZHANG
;
Dewang FU
- Publication Type:Journal Article
- Keywords:
transcranial doppler;
intracranial and extracranial artery stenosis;
computed tomography angiography;
acute ischemic stroke
- From:
Journal of China Medical University
2015;44(8):734-737
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the diagnostic accuracy of transcranial doppler(TCD)as an additional screening tool for intracranial arterial steno-occlusive disease in patients with acute ischaemic stroke(AIS)by comparing with the computed tomography angiography(CTA). Methods Two hundred and twenty-four consecutive patients who were hospitalized within 7 days of the onset of symptoms and fulfilled the criteria for the clinical di-agnosis of AIS between May 2013 and May 2014 were enrolled for the study. Among the 224 patients,there were 118 males and 106 females with an average age of 61.2±12.6 years. High-resolution brain CTA was performed after completion of TCD. Results There was slight distinction of the diag-nostic accuracy of TCD for different arteries. TCD demonstrated the most accurate diagnosis for carotid artery vascular system,with a sensitivity of 96.19%and specificity of 98.60%. For the vertebrobasilar vascular system,TCD diagnosis showed a sensitivity of 71.11%and specificity of 94.31%. TCD findings were complementary to the CTA results(real-time embolization,collateral flow patterns and steal phenomenon). Conclusion TCD shows a high diagnostic accuracy comparing to CTA in evaluating intracranial and extracranial arterial stenosis in patients with AIS,especially for the carotid artery vascular system analysis within a short time interval. TCD can also provide additional real-time dynamic findings complementary to the information provided by CTA.
