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Abstract
Objective To evaluate the parameters of inner diameter different rate (D%), mean wave intensity(MWl) and diameter-adjusted mean wave intension(DAMWI) in assessing the function of common carotid artery(CCA) by quality intima-media thickness(QIMT) technique. Methods Twenty-four healthy subjects were performed 2D and CDFI examination under the normal quiescent and cold pressor test(CPT) condition respectively. The diastolic and systolic diameters of left-CCA were measured by QIMT respectively. Corresponding the inner diameter different range,rate,MWI and DAMWI were calculated respectively. The curves of their ROC were drawn. Results The different range and rate of diameters were decreased when subjects suffered CPT (P 0. 05). Conclusions Conclusions The changed rate of diameter can be measured exactly by QIMT. The function of CCA can Be evaluated by MW1 and DAMWI which were calculated by conventional parameters. Key words: Ultrasonography; Carotid arteries ; Cold pressor test
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