Towards real-time EPID-based 3D in vivo dosimetry for IMRT with deep neural networks: a feasibility study
We investigate the potential of the Deep Dose Estimate (DDE) neural network to predict 3D dose distributions inside patients with Monte Carlo (MC) accuracy, based on transmitted EPID signals and patient CTs. The network was trained using as input patient CTs and first-order dose approximations (FOD)...
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| Hauptverfasser: | , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
4 October 2023
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| In: |
Physica medica
Year: 2023, Jahrgang: 114, Pages: 1-9 |
| ISSN: | 1724-191X |
| DOI: | 10.1016/j.ejmp.2023.103148 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.ejmp.2023.103148 Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S1120179723001758 
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| Verfasserangaben: | Juliana Cristina Martins, Joscha Maier, Chiara Gianoli, Sebastian Neppl, George Dedes, Abdulaziz Alhazmi, Stella Veloza, Michael Reiner, Claus Belka, Marc Kachelrieß, Katia Parodi |
MARC
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| 245 | 1 | 0 | |a Towards real-time EPID-based 3D in vivo dosimetry for IMRT with deep neural networks |b a feasibility study |c Juliana Cristina Martins, Joscha Maier, Chiara Gianoli, Sebastian Neppl, George Dedes, Abdulaziz Alhazmi, Stella Veloza, Michael Reiner, Claus Belka, Marc Kachelrieß, Katia Parodi |
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| 520 | |a We investigate the potential of the Deep Dose Estimate (DDE) neural network to predict 3D dose distributions inside patients with Monte Carlo (MC) accuracy, based on transmitted EPID signals and patient CTs. The network was trained using as input patient CTs and first-order dose approximations (FOD). Accurate dose distributions (ADD) simulated with MC were given as training targets. 83 pelvic CTs were used to simulate ADDs and respective EPID signals for subfields of prostate IMRT plans (gantry at 0∘). FODs were produced as backprojections from the EPID signals. 581 ADD-FOD sets were produced and divided into training and test sets. An additional dataset simulated with gantry at 90∘ (lateral set) was used for evaluating the performance of the DDE at different beam directions. The quality of the FODs and DDE-predicted dose distributions (DDEP) with respect to ADDs, from the test and lateral sets, was evaluated with gamma analysis (3%,2 mm). The passing rates between FODs and ADDs were as low as 46%, while for DDEPs the passing rates were above 97% for the test set. Meaningful improvements were also observed for the lateral set. The high passing rates for DDEPs indicate that the DDE is able to convert FODs into ADDs. Moreover, the trained DDE predicts the dose inside a patient CT within 0.6 s/subfield (GPU), in contrast to 14 h needed for MC (CPU-cluster). 3D in vivo dose distributions due to clinical patient irradiation can be obtained within seconds, with MC-like accuracy, potentially paving the way towards real-time EPID-based in vivo dosimetry. | ||
| 650 | 4 | |a Deep Neural Networks | |
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| 650 | 4 | |a In vivo dosimetry | |
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