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Injection of clear ink was started a t = 0 seconds to clear red ink. The percentage of initial red ink remaining was plotted as a function of time. (A) Simulations were conducted at a CI of 1.8 and 3.0 where the aortic valve was not allowed to open. (B) Simulations were conducted at a CI of 1.8 and 3.0 where the aortic valve was allowed to open intermittently.
