In tissue Doppler imaging, which pairing of velocities correctly describes their corresponding motions?

• A. S' - systolic velocity; E' - early diastolic velocity; A' - atrial contraction velocity
• B. S' - systolic velocity; E' - atrial contraction velocity; A' - early diastolic velocity
• C. S' - systolic velocity; E' - early diastolic velocity; A' - atrial contraction velocity
• D. S' - diastolic velocity; E' - systolic velocity; A' - atrial contraction velocity

Answer: (C)