Radiation oncology firm Elekta is touting a study that found patients with multiple brain metastases receive as much as a 74% lower radiation dose to normal brain tissue with its Leksell Gamma Knife Perfexion radiosurgery system.
Researchers from the University of California, San Francisco (UCSF) compared Elekta's Leksell Gamma Knife Perfexion with contemporary linear accelerator-based stereotactic radiosurgery (SRS) systems.
The results are particularly noteworthy, given the greater likelihood of neurocognitive deficits associated with greater radiation exposure of normal brain tissue, according to the company.
The study was presented this month by co-author and UCSF physicist Lijun Ma, PhD, at the Leksell Gamma Knife Society meeting in New York City. Results also were published online in the International Journal of Computer Assisted Radiology and Surgery.
The researchers compared the Perfexion system with several other commercially available radiation therapy systems, and Perfexion gave the lowest dose to normal brain tissue, according to Ma.
