Whereas the photons used
in conventional radiation therapy produced a kind of fog of small clumps of ionization, protons — 2,000 times heavier — left a dense and distinct line of ionization.
Compared to
the conventional radiation therapy (RT) approach of small doses given daily over several weeks, SBRT delivers a highly targeted, escalated dose of radiation in a single session or as many as five of treatments, usually between one and five fractions.
IMRT targets tumors better than
conventional radiation therapy.
These treatments offer a safer, more effective way to deliver radiation to children than
conventional radiation therapy, which is used sparingly in children because of the risks of cognitive problems later in life.
Generally, treatment of metastatic brain tumors will include surgery, stereotactic radiosurgery,
conventional radiation therapy and chemotherapy, each used independently or in combination.
It utilizes a robotic arm to deliver the entire therapeutic dose to an animal in 1 - 3 treatments, compared to
conventional radiation therapy, which can employ up to 20 treatments.