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. Author manuscript; available in PMC: 2012 Mar 24.
Published in final edited form as: Phys Med Biol. 2010 Nov 3;55(22):6857–6866. doi: 10.1088/0031-9155/55/22/016

Figure 2.

Figure 2

(a) Both SFI and 1/Nt values maintain a linear relationship to the actual flow rate for an actual flow rate greater than 5 mm s−1 and an image exposure time of 1 ms. For an actual flow rate less than 5 mm s−1, it is necessary to employ a longer exposure time to achieve a linear response as demonstrated in (b) for T = 10 ms.