Tong CC, Au KH, Ngan RK, Chow SM, Cheung FY, Fu YT, Au JS, Law SC. Definitive radiotherapy for early stage glottic cancer by 6 MV photons. Head Neck Oncol. 2012 May 18;4(1):23.

Conclusion Primary RT remains an option among the various standard treatments for early GC. Clinical treatment outcome by 6MV photons is similar and comparable to historic data of Cobalt-60 and 2 MV photons.
Source: Head and Neck Oncology - Category: Cancer & Oncology Source Type: research