Abstract

Introduction: Cervical cancer (Ca Cx) is the fourth most frequent cancer in women with an estimated 57000 new cases in 2018 representing 6.6% of all female cancers. Approximately 90% of deaths from cervical cancer occurred in low- and middle-income countries. Material and Methods: A retrospective radiotherapy treatment planning comparative study conducted at the Department of Radiation Physics, Kidwai Memorial Institute of Oncology, Bangalore during June 2018- March 2019. Result: All the plans were normalized to 100 % at Target mean to achieve a similar target dose for quantitative comparison of DVHs. The results for target coverage, OAR sparing, integral dose, and monitoring units. Conclusions: The tradeoff of using 6 MV and 18 MV for cervix patients depends on many parameters. Since the same PTV coverage was forced for both energies by having the same optimization constraints, there was little difference in target coverage and conformity index for both energies.

Highlights

  • Cervical cancer (Ca Cx) is the fourth most frequent cancer in women with an estimated 57000 new cases in 2018 representing 6.6% of all female cancers

  • This study aims to find optimal energy that could offer better target coverage, target conformity, Homogeneity, and normal tissue sparing for cervix intensitymodulated radiotherapy (IMRT)

  • The minimum dose in the target was decreased with 18 MV and composite plans compared to 6 MV plan

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Summary

Introduction

Cervical cancer (Ca Cx) is the fourth most frequent cancer in women with an estimated 57000 new cases in 2018 representing 6.6% of all female cancers. 90% of deaths from cervical cancer occurred in low- and middle-income countries. Material and Methods: A retrospective radiotherapy treatment planning comparative study conducted at the Department of Radiation Physics, Kidwai Memorial Institute of Oncology, Bangalore during June 2018- March 2019. Conclusions: The tradeoff of using 6 MV and 18 MV for cervix patients depends on many parameters. Cervical cancer (Ca Cx) is the fourth most frequent cancer in women with an estimated 57000 new cases in 2018 representing 6.6%. 90% of deaths from cervical cancer occurred in lowand middle-income countries [GLOBOCON 2018]. Treatment depends on disease extent at diagnosis and locally available resources.

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