Dosimetric Comparison of Intensity Modulated Radiation Therapy (IMRT) and Rapid Arc in Cervix Carcinoma

Abstract

In this study, the comparison of dosimetric parameters for IMRT and RA while treating the patients suffering from cervical carcinoma are analyzed. A total number of 20 patients were selected, out of which, 10 were treated with IMRT and the other 10 with RA. As per Radiation Therapy Oncology Group (RTOG), OARs were also marked on CT images and oncologist did the contouring for Planning Target Volume (PTV), Clinical Target Volume (CTV), and Gross Target Volume (GTV). The dosimetric parameters include verity of Index and Coverage which were calculated for the plans’ calculation and OARs doses. Two samples of paired T-tests have been performed to find the difference of dosimetry for RA and IMRT plans. In the RA and IMRT planning, 0.96 is the conformity index mean values. The results shows that the mean value for Paddick Conformity Index was 0.93 while New Conformity Index value was 1.06.