Table 3. Comparison of tumor, rectum, and bladder pre- and peri-radiotherapy.

Groups	Tumor volume (cm3)	Long diameter (cm)	Short diameter (cm)	Rectal volume (cm3)	Bladder volume (cm3)
Pre-radiotherapy, mean ± SD	69.25±35.90	5.582±1.238	3.807±1.100	66.74±25.52	375.71±154.72
Peri-radiotherapy, mean ± SD	28.87±15.02	3.610±1.207	2.437±0.823	74.05±22.71	271.32±121.5

The changes of tumor images before and after 17–19 rounds of radiotherapy were compared to evaluate the impact of the above indexes on re-planning.