三维彩色多普勒超声成像评价颈动脉狭窄程度的准确性研究

Accuracy of three-dimensional color Doppler ultrasonography in evaluating the extent of carotid arterial stenosis

目的:探讨利用三维彩色多普勒超声成像评价颈动脉狭窄程度的准确性。方法:颈动脉狭窄患者40例。仪器采用AcusonX/P128彩色多普勒超声诊断仪,TomTec三维彩色多普勒成像系统。测量指标包括:病变(斑块)的体积(VP),容积狭窄度(V%),面积最大狭窄度(S%),内径最大狭窄度(D%)。对同一检查者不同次测量结果及不同医师的测量结果进行相关性分析,P<0.05为有统计学意义。结果:V%范围为26%～80%,S%范围为33%～86%,D%范围为36%～93%。同一检查者于不同次成像的测量结果高度相关(r=0.94～0.97,P<0.05),不同检查者之间的测量结果高度相关(r=0.88～0.93,P<0.05)。结论:利用三维彩色多普勒超声成像能够对颈动脉的狭窄程度进行准确的定量评价。

AIM:To explore the accuracy of three dimensional color Doppler ultrasonography in evaluating the extent of carotid artery stenosis. METHEDS:Forty patients with carotid artery stenosis were examined by using Acuson X/P 128 color Doppler ultrasonography diagnosis system and TomTec three dimension color Doppler ultrasonography system.The indexes measured were volume of pathological changes(Vp),extent of stenosis volume(V%),maximal extent of stenosis area(S%) and maximal extent of stenosis diameter(D%).The results of different times for the same examiner,and of different physicians were analyzed by correlation,P< 0.05 meant statistical signification. RESULTS:The range of V%was 26%-80%,S%was 33%-86%,and D%was 36%-93%.High correlation was found in the results of different times for the same examiner(r=0.94-0.97,P< 0.05),and that of different examiners(r=0.88-0.93,P< 0.05).The extent of carotid artery stenosis can be quantitatively assessed exactly by three dimensional color Doppler ultrasonography.