1. Carotid collateral circulation decreases the diagnostic accuracy of duplex scanning;Cato;Bruit,1986
2. Effect of contralateral internal carotid stenosis on the accuracy of continuous wave Doppler spectral analysis results;Forconi;J Cardiovasc Surg,1987
3. The effect of contralateral disease on carotid Doppler frequency;Hayes;Surgery,1988
4. Duplex Doppler sonography of the carotid artery: false-positive results in an artery contralateral to an artery with marked stenosis;Beckett;AJNR,1990
5. Contralateral internal carotid artery stenosis or occlusion: pitfall of correct ipsilateral classification - a study performed with color-flow imaging;Spadone;J Vasc Surg,1990