Seattle, Washington is the home to this country's 11th Proton Therapy Center - Opened March 7, 2013

Check the news out here: http://www.seattlecca.org/diseases/proton-therapy-overview.cfm

Medulloblastoma Brain Tumor Treatment Plan Comparing Proton (left) to IMRT (right)

Note the additional radiation beyond the tumor site that is administered on the right.

 Treatment plan courtesy of MD Anderson