Validation of the dosimetric and geometric accuracy of MR-only treatment planning solution for prostate cancer radiotherapy.
MR-only planning
fiducial registration error
prostate cancer
synthetic CT
Journal
Contemporary oncology (Poznan, Poland)
ISSN: 1428-2526
Titre abrégé: Contemp Oncol (Pozn)
Pays: Poland
ID NLM: 101233223
Informations de publication
Date de publication:
2021
2021
Historique:
received:
19
11
2021
accepted:
11
12
2021
entrez:
26
1
2022
pubmed:
27
1
2022
medline:
27
1
2022
Statut:
ppublish
Résumé
The aim was to validate the dosimetric and geometric accuracy of radiotherapy treatment plans for prostate cancer based on magnetic resonance (MR) imaging only and a solution based on computed tomography (CT) supported by MR imaging. We used CT and MR images of ten prostate cancer patients implanted with three fiducial markers (FM) in the prostate gland. Rigid registration based on FM was performed to assess the fusion accuracy between MR and CT images. The differences between prostate contours (clinical target volume - CTV) on CT (CTV The averaged fiducial registration error was equal to 0.5 mm. All CTV MR imaging allows for a more precise delineation of the prostate compared to CT imaging. The workflow of plan preparation based on MR and CT is burdened with an FM registration error that is eliminated by an MR-only solution with no compromise on dose distribution.
Identifiants
pubmed: 35079232
doi: 10.5114/wo.2021.112518
pii: 46150
pmc: PMC8768054
doi:
Types de publication
Journal Article
Langues
eng
Pagination
249-253Informations de copyright
Copyright © 2021 Termedia.
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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