Verification of Radiation Fluence using Stack Film in HDR Brachytherapy with Heterogeneity Algorithm
Journal Title: Journal of Clinical and Diagnostic Research - Year 2018, Vol 12, Issue 11
Abstract
ABSTRACT Introduction: It is essential that Quality Assurance (QA) need to be in line with progresses in HDR brachytherapy treatment planning and delivery to ensure an appropriate level of dosimetric accuracy and quality. Aim: To verify radiation fluence using stack films in HDR brachytherapy with heterogeneity algorithm. Materials and Methods: Gafchromic EBT2 films were stacked in different experimental setup and each film acted as dosimeter to validate AcurosTMBV algorithm in HDR brachytherapy. These films were read using Epson expression 10000 XL flatbed scanner, calibrated against the standard value and analysed with Film QA Pro 2015 software. Different criterion were set for gamma analysis which include Dose Difference (DD)/Distance-To-Agreement (DTA); 2%/1 mm, 5%/1 mm, 10%/1 mm. Results: In order to validate the point doses calculated using model based dose calculation algorithm (AcurosTM BV), a virtual phantom created in the TPS, which agreed with MC based calculation mostly within 2%. The results of each plane were analysed in all the experimental setup. In the gamma pass criteria of 2% and 1 mm, 92% passed, in 5% and 1 mm criteria 96% passed and with 10% and 1 mm criteria, almost 100% passing rate was achieved. Conclusion: Methods provide a comprehensive verification for commissioning the MBDCA-AcurosTM BV and are recommended to use stack film for QA program in HDR brachytherapy.
Authors and Affiliations
Mourougan Sinnatamby, Vivekanandan Nagarajan, Reddy Sathyanarayana Kanipakam, Gunaseelan Karunanidhi, Vijayaprabhu Neelakandan, Saravanan Kandasamy
Keywords
Related Articles
- EP ID EP526283
- DOI 10.7860/JCDR/2018/36733.12258
- Views 78
- Downloads 0
Predictive Value of Fasting Plasma Glucose on First Antenatal Visit before 20 Weeks of Gestation to Diagnose Gestational Diabetes Mellitus
ABSTRACT Introduction: Gestational Diabetes Mellitus (GDM) is an important public health concern due to its association with adverse foetomaternal outcome. Steadily increasing prevalence necessitates screening and early...
Role of Salivary Electrolytes in Prevalence of Dental Caries among Diabetic and Non-Diabetic Adults
ABSTRACT Introduction: Diabetes mellitus has been linked with an increased risk of caries, gingivitis and periodontal disease. Dental caries is more prevalent and even more severe in diabetic patients than non-diabetics....
Removal of a Deeply Impacted Ectopic Mandibular Third Molar through a Buccal Corticotomy in Severe Trismus-A Case Report
Management of deeply impacted mandibular third molar in itself is a surgical challenge and when it is associated with restricted mouth opening, it becomes more devious job. Deeply impacted tooth can be approached by bucc...
Effect of Age and Hypertension on Cognition: A Cross-sectional Study
ABSTRACT Introduction: Cognitive impairment has evolved as major health and social issue. As age advances cognitive tasks involving processing speed, working memory and executive function get affected. Cognitive impairme...
Oral Health and Quality of Life: Current Concepts
The recognition of health related quality of life began ever since WHO expanded the definition of health in 1948. This has resulted in the paradigm shift of health and disease from a medical model to a biopsychosocial mo...