| Summary: | Summary: Blood-brain barrier disruption (BBBD) using focused ultrasound (FUS) and microbubbles (MBs) is an effective tool for therapeutic delivery to the brain. Here, we present an optimized protocol for quantifying fluorescent molecules extravasation in mice. We describe steps for ultrasound treatment, injection of MBs and fluorescent dyes, brain harvesting, microscopy imaging, and image postprocessing algorithm. Our protocol has proven to successfully conduct a diameter-dependent analysis that measures vascular leakage following FUS-mediated BBBD at a single blood vessel resolution.For complete details on the use and execution of this protocol, please refer to Katz et al.1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.
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