Highlights • Modern IGRT has given new insight regarding organ motion in radiotherapy.• Rectal volume variation may increase the risk of biochemical and local failure.• Rectal volume decreased significantly during… Click to show full abstract
Highlights • Modern IGRT has given new insight regarding organ motion in radiotherapy.• Rectal volume variation may increase the risk of biochemical and local failure.• Rectal volume decreased significantly during eight weeks of radiotherapy.• The percentage of irradiated rectal volume did not change statistically significant.• Our study shows that IGRT ensures a close to stable dose to the rectum.
               
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