Steroids and Brain Edema (brain swelling)

Would this be fast working enough to not need to cut out a chunk of your skull?
http://www.uwhealth.org/healthfacts/B_EXTRANET_HEALTH_INFORMATION-FlexMember-Show_Public_HFFY_1126650980242.html
And nanoparticles to the rescue;

Development of high drug-loading nanomicelles targeting steroids to the brain