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. Author manuscript; available in PMC: 2012 Aug 9.
Published in final edited form as: J Ultrasound Med. 2009 Nov;28(11):1511–1518. doi: 10.7863/jum.2009.28.11.1511

Figure 2.

Figure 2

Representative duplex sonograms and user measurements given a true volumetric flow rate of 500 mL/min. As indicated on the images, the corresponding measured flow rates were 486.2 mL/min (A), 530.6 mL/min (B), and 491.2 mL/min (C).