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Discusses the utility of B-mode ultrasound imaging of extracranial carotid arteries as an outcome variable in clinical trials.
B -mode ultrasound imaging of the extracranial carotid arteries has been used to identify the outcome variable in case-control' and cross-sectional2 studies relating risk factors to arterial disease and in cohort studies relating risk factors to disease progression,3 and in this issue of Circulation, Blanken- horn et a14 provide evidence regarding its use in clinical trials.
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John R. Crouse (1993) studied this question.
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