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Title: Radiation dose delivery verification in the treatment of carcinoma-cervix

The accurate dose delivery to the clinical target volume in radiotherapy can be affected by various pelvic tissues heterogeneities. An in-house heterogeneous woman pelvic phantom was designed and used to verify the consistency and computational capability of treatment planning system of radiation dose delivery in the treatment of cancer cervix. Oncentra 3D-TPS with collapsed cone convolution (CCC) dose calculation algorithm was used to generate AP/PA and box field technique plan. the radiation dose was delivered by Primus Linac (Siemens make) employing high energy 15 MV photon beam by isocenter technique. A PTW make, 0.125cc ionization chamber was used for direct measurements at various reference points in cervix, bladder and rectum. The study revealed that maximum variation between computed and measured dose at cervix reference point was 1% in both the techniques and 3% and 4% variation in AP/PA field and 5% and 4.5% in box technique at bladder and rectum points respectively.
Authors:
;  [1] ;  [2]
  1. Department of Radiotherapy, J.K. Cancer Institute Kanpur-208019 (India)
  2. Department of Physics, Christ Church College, Kanpur-208001 (India)
Publication Date:
OSTI Identifier:
22490212
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; ALGORITHMS; ANIMAL TISSUES; BLADDER; CARCINOMAS; DELIVERY; LINEAR ACCELERATORS; PHANTOMS; PHOTON BEAMS; PLANNING; RADIATION DOSES; RADIOTHERAPY; RECTUM; VARIATIONS; VERIFICATION; WOMEN