ArticleJournal of medical physics
Current Practices and Clinical Implementation of Electronic Portal Imaging Device-based Dosimetry in Indian Radiotherapy Centres: A National Survey.
Article in Journal of medical physics. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
Purpose: This study aims to assess the current prevalence, utilization patterns, and operational challenges of electronic portal imaging device (EPID)-based dosimetry systems in Indian radiotherapy centres. Materials and Methods: A multiple-choice survey was distributed through Google Forms to medical physicists in India. The four-section survey covered treatment techniques, EPID availability and dosimetry, alternative detectors, and future challenges. Responses were limited to one per institution, with follow-up reminders. Results: A total of 237 responses were received with a response rate of 62.2%. Among these, 73% of institutions currently use EPID-based dosimetry systems. Of these users, 42.2% rely on EPID for daily quality assurance (QA), and 62.4% of institutions use EPID for more than 50% of their total QA workflow. The primary tasks performed using EPID systems include patient-specific QA (PSQA) for intensity modulated radiation therapy (100%), periodic machine QA (58.4%), PSQA for stereotactic radiation therapy/stereotactic body radiation therapy (48.6%), machine commissioning (18.5%), and Conclusion: This study reveals the widespread use of EPID systems and highlights that implementation offers certain advantages. However, issues such as software limitations, high initial cost, and the need for affordable or free resources remain barriers to wider adoption.
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