Dose conformity and falloff in single-lesion intracranial SRS with DCA and VMAT methods.
conformity index
dose conformity
planning target volume
Journal
Journal of applied clinical medical physics
ISSN: 1526-9914
Titre abrégé: J Appl Clin Med Phys
Pays: United States
ID NLM: 101089176
Informations de publication
Date de publication:
24 Jun 2024
24 Jun 2024
Historique:
revised:
25
04
2024
received:
28
12
2023
accepted:
06
05
2024
medline:
26
6
2024
pubmed:
26
6
2024
entrez:
26
6
2024
Statut:
aheadofprint
Résumé
Intracranial stereotactic radiosurgery (SRS) aims at achieving highly conformal dose distribution and, at the same time, attaining rapid dose falloff outside the treatment target. SRS is performed using different techniques including dynamic conformal arcs (DCA) and volumetric modulated arc therapy (VMAT). In this study, we compare dose conformity and falloff in DCA and VMAT plans for SRS with a single target. To compare dose conformity in SRS plans, we employ a novel conformity index The studied VMAT plans were characterized by higher dose conformity than the DCA plans. The differences between the conformity indices for the DCA plans and VMAT plans were statistically significant. The DCA plans had a smaller number of monitor units (MUs) and smaller indices R50%, V Although the studied VMAT plans had higher dose conformity, they also had larger MUs than the DCA plans. In terms of dose falloff characterized by parameters R50%, V
Sections du résumé
BACKGROUND
BACKGROUND
Intracranial stereotactic radiosurgery (SRS) aims at achieving highly conformal dose distribution and, at the same time, attaining rapid dose falloff outside the treatment target. SRS is performed using different techniques including dynamic conformal arcs (DCA) and volumetric modulated arc therapy (VMAT).
PURPOSE
OBJECTIVE
In this study, we compare dose conformity and falloff in DCA and VMAT plans for SRS with a single target.
METHODS
METHODS
To compare dose conformity in SRS plans, we employ a novel conformity index
RESULTS
RESULTS
The studied VMAT plans were characterized by higher dose conformity than the DCA plans. The differences between the conformity indices for the DCA plans and VMAT plans were statistically significant. The DCA plans had a smaller number of monitor units (MUs) and smaller indices R50%, V
CONCLUSIONS
CONCLUSIONS
Although the studied VMAT plans had higher dose conformity, they also had larger MUs than the DCA plans. In terms of dose falloff characterized by parameters R50%, V
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e14415Informations de copyright
© 2024 The Author(s). Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.
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