Elekta on Instagram: "In radiation therapy, a multileaf collimator, or MLC, is used to shape the beam generated by a linac. Its design, based on years of research and development, incorporates industrial-grade rubies to monitor and control the leaves. ⁣ ⁣ Here, Giulia Thompson, our head of advanced development engineering for linac, explains how these gemstones help clinicians precisely target cancer cells."