Pre-treatment verification performed with Electronic Portal Imaging Device (EPID) and IMatriXX for 204 cancer patients treated with Intensity Modulated Radiotherapy (IMRT) - phantom based study

Document Type : Original Paper


1 Pravara Institute of Medical Science

2 Pravara Institute of MEdical Sciences

3 Government Cancer Hospital, MGM Medical College, Indore


Background: State-of-art radiotherapy techniques such as Intensity Modulated Radiotherapy (IMRT) and Volumetric Modulated Arc Therapy (VMAT) are being used for treatment of cancer with high accuracy. Verification of planned and delivered dose distribution is very important, therefore current study has been carried out with purpose to evaluate quality assurance (QA) results and effectiveness of Electronic Portal Imaging Device (EPID) and IMatriXX in cases of Carcinoma patients.
Materials and Methods: Performance of an EPID and IMatriXX was assessed with dose measurements using ionization chamber. Calibrated IMatriXX and EPID are used for pre-treatment patient specific quality assurance (PSQA), for 204 cancer patients plans with IMRT treatment technique on linear accelerator. Dose image for each treatment field were compared with gamma evaluation (3%/3mm) and combination of three scalar parameters were evaluated against EPID and to quantify gamma results within region of interest; namely average  (avg), maximum  (max) and Area Gamma


Main Subjects

Articles in Press, Accepted Manuscript
Available Online from 22 October 2020
  • Receive Date: 01 July 2020
  • Revise Date: 29 September 2020
  • Accept Date: 22 October 2020