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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: Ultrasound Med Biol. 2017 Jul 14;43(10):2302–2317. doi: 10.1016/j.ultrasmedbio.2017.06.010

Figure 9. Skullcaps after 250 kHz Treatment.

Figure 9

The external, superior portion of each skullcap after all treatments with the 250 kHz array. As skullcaps were stored in a bleach-water solution to prevent algae from growing and gassing up the skullcaps, the exterior surface of the skull eventually turned white and chalky. During the 250 kHz treatments, this white particulate fell off the back of the skull, most likely because the pre-focal cavitation eroded away the white, chalky layer caused by the bleach. Approximately halfway through treatments through skull 1, this effect stopped. Analysis of the skull after treatment indicated that the white-chalky layer had been almost entirely removed with the true skull surface exposed.