"They perceive their life is not so drastically changed," he said. "At 9 and 15 weeks, the PBRT women perceived less stress than the WBRT women."

Conclusion SRT alone is the optimal treatment for lung cancer with single brain metastasis, while saving WBRT or SRT is used after failure of SRT.

When analyzing six-week data for change from baseline, women who had been treated with PBRT had improved energy and quality of life compared to those who had received WBRT.