Clinically Relevant Quality Assurance for Intensity Modulated Radiotherapy Plans: Gamma Maps and DVH-Based Evaluation. (16th March 2014)

• Record Type: Journal Article
• Authors: Caivano, R.; Califano, G.; Fiorentino, A.; Cozzolino, M.; Oliviero, C.; Pedicini, P.; Clemente, S.; Chiumento, C.; Fusco, V.
• Is Part Of: Cancer investigation. Volume 32:Number 3(2014)
• Page Start: 85
• Page End: 91
• Publication Date: 2014-03-16
• Subjects: Cancer -- Periodicals; Oncology -- Periodicals; Medical Oncology -- Periodicals; Neoplasms -- Periodicals; 616.994
• DOI: 10.3109/07357907.2013.877478
• Languages: English
• ISSNs: 0735-7907

Abstract

<abstract> <title> <x xml:space="preserve">Abstract</x> </title> <p> <italic>Purpose:</italic> To explore a novel patient-dose DVH-based method for pretreatment dose quality assurance tests. <italic>Methods:</italic> 20 IMRT plans for head-and-neck cancer patients were used. A comparison was performed between the planned dose distributions, the computed, and the reconstructed ones using the gamma-index (GI) method. The GI analysis was performed using both the 3%/3 mm and the 2%/2 mm criteria. <italic>Results:</italic> No significant DVH-deviation was observed. Considering the 3%/3 mm criteria the mean GI% &lt; 1 for the body and structures was significantly higher compared to 2%/2 mm criteria. <italic>Conclusions:</italic> Our results underline the importance of QA-methods based on DVH-metrics to predict the impact of delivered dose.</p> </abstract>