Systems and methods for monitoring and controlling delivery of a therapeutic compound to a brain of a subject using FUS-BBBD are disclosed. The method includes treating the brain of the subject with focused ultrasound in combination with microbubbles for blood-brain barrier disruption (FUS-BBBD), administering the therapeutic agent to the subject； and obtaining a map of a concentration of the therapeutic agent delivered to the brain of the subject using passive cavitation imaging (PCI). The delivery of focused sound may be modulated to match the map of the concentration of the therapeutic agent delivered to the brain of the subject to a desired spatial distribution of the therapeutic agent.
