Correlation of invasive Doppler flow wire with renal duplex ultrasonography in the evaluation of renal artery stenosis: The Renal Artery Stenosis Invasive.

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Correlation of invasive Doppler flow wire with renal duplex ultrasonography in the evaluation of renal artery stenosis: The Renal Artery Stenosis Invasive Doppler (RAIDER) study Michael H. Duong, MD, Todd A. Mackenzie, PhD, Robert M. Zwolak, MD, PhD, Aaron V. Kaplan, MD, John F. Robb, MD, Craig A. Thompson, MD, MMSc Journal of Vascular Surgery Volume 45, Issue 2, Pages 284-288 (February 2007) DOI: 10.1016/j.jvs.2006.09.041 Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 1 Example of invasive Doppler flow wire velocity waveforms in the mid renal artery. Peak systolic velocity here is 80 cm/s. End-diastolic velocity is 15 cm/s. This yields an RI of 81. Journal of Vascular Surgery 2007 45, 284-288DOI: (10.1016/j.jvs.2006.09.041) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions

Fig 2 Scatter plot of renal index (RI) derived by catheter Doppler flow wire and renal duplex ultrasonography (RDUS). A robust correlation is seen, with r = 0.86 (95% CI, 0.73 to 0.93). Journal of Vascular Surgery 2007 45, 284-288DOI: (10.1016/j.jvs.2006.09.041) Copyright © 2007 The Society for Vascular Surgery Terms and Conditions