Dosimetric Evaluation Study on Conventional and 3d Conformal Brachytherapy Treatment of Cervix Cancer
نویسندگان
چکیده
The purpose of this study was to compare International Commission on Radiation Units and Measurements (ICRU, report 38) reference points, used in conventional brachytherapy planning, with Computed Tomography (CT)-based volumetric calculations of radiation doses for target volumes and organs at risk in biopsy-proven cervix carcinoma patients. All patients underwent brachytherapy using CT-compatible applicators, followed by both conventional and CT scanning. The results confirm that point A radiation dose prescription overestimates target volume coverage, meanwhile for organs at risk the dose is underestimated. This suggests that brachytherapy needs to advance from a point-based (conventional) to a volume-based concept (3D conformal).
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