Sökning: onr:"swepub:oai:gup.ub.gu.se/304770" >
Edge area metric co...
-
Götstedt, JuliaGothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap,Institute of Clinical Sciences, Department of Medical Radiation Sciences
(författare)
Edge area metric complexity scoring of volumetric modulated arc therapy plans
- Artikel/kapitelEngelska2021
Förlag, utgivningsår, omfång ...
Nummerbeteckningar
-
LIBRIS-ID:oai:gup.ub.gu.se/304770
-
https://gup.ub.gu.se/publication/304770URI
-
https://doi.org/10.1016/j.phro.2021.02.002DOI
Kompletterande språkuppgifter
Ingår i deldatabas
Klassifikation
-
Ämneskategori:ref swepub-contenttype
-
Ämneskategori:art swepub-publicationtype
Anmärkningar
-
Background and purpose: Aperture-based complexity metrics have been suggested as a method to score complexity of volumetric modulated arc therapy (VMAT) plans. The purpose of this study was to evaluate the edge area metric (EAM) for clinical VMAT plans on a control point and treatment plan level. Materials and methods: EAM on a control point level was evaluated based on film measurements of 18 static beam openings originating from VMAT plans. EAM on a treatment plan level (arithmetic mean value of EAM scores for control points) was evaluated based on measurements with the Delta(4)(R) for 200 VMAT plans for four different treatment sites: pelvic, thorax, head and neck, and prostate. Measurements were compared to calculations and dose difference and gamma pass rates were evaluated. Results: EAM scores on a control point level correlated with Pearson's r-values of -0.96 and -0.77 to dose difference and gamma pass rates, respectively. The prostate plans had the highest average EAM score. A connection between smaller PTVs and higher EAM scores was found. No correlation between the evaluation result and EAM on a plan level was found. Conclusions: EAM on a control point level was shown to correlate to the difference between measured and calculated 2D dose distributions of clinical VMAT beam openings. No correlation was found for EAM on a plan level for clinical treatment plans.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
-
Back, A.
(författare)
-
Göteborgs universitetInstitutionen för kliniska vetenskaper, Avdelningen för medicinsk strålningsvetenskap
(creator_code:org_t)
Sammanhörande titlar
-
Ingår i:Physics & Imaging in Radiation Oncology: Elsevier BV17, s. 124-1292405-6316
Internetlänk
Hitta via bibliotek
Till lärosätets databas