Abstract：[Objective]To explore the influence of the change of bladder volume on the radiotherapy of cervical cancer.[Methods]When bladder was empty,half full or full,22 patients with cervical cancer in our hospital received CT scan for 3 times.The changes of the displacement of cervix and uterine body were com-pared.[Results]The mean displacement of cervix and uterine body for empty-full group in anterior,superior and inferior directions was the largest(0.7~1.0cm and 0.8~0.9cm).The mean maximal displacement of cer-vix and uterine body for empty-half full group in 6 directions was less than 0.6cm and 0.5cm,respectively. The mean maximal displacement of cervix and uterine body for half full-full group in 6 directions was less than 0.8cm and 0.6,respectively.[Conclusion]The position of uterine body and cervix changes with bladder vol-ume,and the maximal displacement alteration is positively related with bladder volume.
2014, Vol. 31 
