Fig. 6

Blood Flow Signal Grading in Patients with Different Pathological Conditions (A) Ultrasound image of a patient graded as SMI level 0; (B) Ultrasound image of a patient graded as SMI level 1; (C) Ultrasound image of a patient graded as SMI level 2; (D and E) Ultrasound images of patients graded as SMI level 3.