Phase contrast magnetic resonance imaging (PC-MRI) is a specific type of magnetic resonance imaging used primarily to determine flow velocities. PC-MRI can be considered a method of Magnetic Resonance Velocimetry. Since modern PC-MRI is typically time-resolved, it can also be referred to as 4D imaging (three spatial dimensions plus time). Using only the above description and what you know about the world, "PC-MRI is not only used to determine flow velocities." is definitely correct, incorrect, or inconclusive? 