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Dynamic magnetic resonance imaging of a rat after injection of SPION microbubbles. Magnetic resonance signal intensity changed mostly in the liver over time from 10 minutes to 6 weeks compared with Pre-injection. (A) Pre-injection and at (B) 10 minutes, (C) one hour, (D) 24 hours, (E) 48 hours, (F) one week, (G) 2 weeks, (H) 4 weeks, and (I) 6 weeks post injection.
Abbreviation: SPION, superparamagnetic iron oxide.
