1. Quantitative common carotid artery blood flow: Prediction of internal carotid artery stenosis 
Nigel Ackroyd, M.R.C.P., F.R.C.S., F.R.A.C.S., Robert Gill, M.Sc., Ph.D., Kaye Griffiths, S.R.N., D.M.U., George Kossoff, D.Sc., Michael Appleberg, F.C.S.(S.A.), F.R.A.C.S., F.A.C.S. 
Journal of Vascular Surgery 
Volume 3, Issue 6, Pages (June 1986)
DOI: / (86)
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
Longitudinal section of CCA showing 10 cm length of vessel. Calipers measured diameter of vessel as 7.25 mm. Angle bar has been placed along axis of flow at point of measurement. Note angulation in vessel (arrow).
Journal of Vascular Surgery 1986 3, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2 Doppler sample volume has been placed over whole width of CCA.
Journal of Vascular Surgery 1986 3, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

4. Fig. 3
Picture is split in three parts during Doppler acquisition phase. Top left is focusing frame. Top right is B-mode frame. Along bottom is mean velocity signal, which has been measured over four cardiac cycles to give absolute flow rate of 519 ml/min.
Journal of Vascular Surgery 1986 3, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

5. Fig. 4
Receiver operator curve (ROC) illustrates greater discriminatory power of normal to abnormal comparison parameters for detecting unilateral >50% ICA stenosis. Test criteria for “FLOW” ROC (400, 350, 300 ml/min) are shown. Corresponding values on normal to abnormal ROC (RATIO) are 1.1, 1.2, and 1.3, for normal minus abnormal difference ROC (DIFF) 0, 50, and 100 ml/min, and for normal to abnormal percentage difference ROC (%DIFF) 10%, 20%, and 30%, respectively.
Journal of Vascular Surgery 1986 3, DOI: ( / (86) )
Copyright © 1986 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions