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A : Magnetic resonance guided focused ultrasound preclinical system. B : Schematic of focused ultrasound (FUS) delivery causing temporary breach of blood-brain barrier within tumour. C : Schematic of FUS effect on microbubbles within blood vessel and resultant breach of BBB allowing delivery of gold nanoparticles (GNPs). MRI : magnetic resonance imaging , BBB : blood-brain barrier.
