Table 4 shows the HVLT-R scores of the patients whose total number of examinations was three (baseline, four, and eight months) by WBRT dose fractionation. In the 25-Gy group, the four-month TR scores were significantly higher than the baseline scores (Bonferroni-adjusted p = 0.045). To test the hypothesis that the patients who underwent 25-Gy WBRT and three examinations had worse baseline TR scores compared to the other WBRT dose groups, we compared the baseline TR scores of each WBRT dose group by Kruskal-Wallis test. There were no significant differences in the baseline TR scores among the WBRT dose groups (p = 0.40). The eight-month HVLT-R scores were not significantly declined in any subdomain regardless of the WBRT dose fractionation.