IMRT for Cervical Cancer:Study of Target Region Regression

Objective To investigate tumor regression in patients with intact cervical cancer. Methods We analyzed 20 patients undergoing intensity-modulated radiation therapy,scanning CT image before and after radiotherapy to study tumor regression. Results Data show that CTV average regression is 17.3%,GTVtumor average regression is 48.2%,and there is influence on adjacent organs. Conclusion Obvious regression of CTV and GTV tumor in radiotherapy is observed.Individual patients with large GTV tumor,should be closely observe its regression and impact to adjacent organs,if necessary,should re-create the treatment plan.