A novel QA phantom based on scintillating fiber ribbons with implementation of 2D dose tomography for small‐field radiotherapy
Medical Physics2022Vol. 50(1), pp. 619–632
Citations Over TimeTop 16% of 2022 papers
Josué Esteves, Odran Pivot, J. Ribouton, P. Jalade, Abdelaali Zouaoui, Laurent Desbat, Simon Rit, F. Blanc, G. Haefeli, P. Hopchev, Jean‐Marc Galvan, Guo‐Neng Lu, Patrick Pittet
Abstract
The proposed small-field QA system makes a use of six water-equivalent scintillating detectors (fiber ribbons) to acquire dose distribution. The developed two-step signal processing method performs tomographic 2D dose reconstruction. A system prototype has been built and tested using hospital facilities with small rectangular and elliptic fields. Testing results show 2D reconstructed dose distributions with high accuracy and resolution. Such a system could potentially be an alternative approach to film dosimetry for small-field QA, which is still widely used as reference in clinical practice.
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