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Figure 3 Blood spontaneous echo contrast videodensity as a function of increasing fibrinogen levels for different hematocrit concentrations. (A) Videodensity value versus fibrinogen concentration for the hematocrit range 7% to 14%. (B) Videodensity value versus fibrinogen concentration for the hematocrit range 27% to 35%. (C) Videodensity value versus fibrinogen concentration for the hematocrit range 35% to 47%. (D) Videodensity value versus fibrinogen concentration for the hematocrit range 53% to 60%.