Synthetic CTs for MRI-only brain RT treatment: integration of immobilization systems.
Artificial intelligence
Image-guided radiotherapy
Radiotherapy setup
Stereotactic radiosurgery
Treatment planning
Journal
Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al]
ISSN: 1439-099X
Titre abrégé: Strahlenther Onkol
Pays: Germany
ID NLM: 8603469
Informations de publication
Date de publication:
08 2023
08 2023
Historique:
received:
29
12
2022
accepted:
25
04
2023
medline:
24
7
2023
pubmed:
7
6
2023
entrez:
7
6
2023
Statut:
ppublish
Résumé
Auxiliary devices such as immobilization systems should be considered in synthetic CT (sCT)-based treatment planning (TP) for MRI-only brain radiotherapy (RT). A method for auxiliary device definition in the sCT is introduced, and its dosimetric impact on the sCT-based TP is addressed. T1-VIBE DIXON was acquired in an RT setup. Ten datasets were retrospectively used for sCT generation. Silicone markers were used to determine the auxiliary devices' relative position. An auxiliary structure template (AST) was created in the TP system and placed manually on the MRI. Various RT mask characteristics were simulated in the sCT and investigated by recalculating the CT-based clinical plan on the sCT. The influence of auxiliary devices was investigated by creating static fields aimed at artificial planning target volumes (PTVs) in the CT and recalculated in the sCT. The dose covering 50% of the PTV (D Defining an optimal RT mask yielded a ∆D This study evaluated the integration of auxiliary devices and their dosimetric influence on sCT-based TP. The AST can be easily integrated into the sCT-based TP. Further, we found that the dosimetric impact was within an acceptable range for an MRI-only workflow.
Identifiants
pubmed: 37285037
doi: 10.1007/s00066-023-02090-w
pii: 10.1007/s00066-023-02090-w
pmc: PMC10361877
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
739-748Informations de copyright
© 2023. The Author(s).
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