dc.contributor.author |
Thasanthan, L |
|
dc.contributor.author |
Croos, AMC |
|
dc.contributor.author |
Piyasena, WRO |
|
dc.date.accessioned |
2018-05-28T11:35:41Z |
|
dc.date.available |
2018-05-28T11:35:41Z |
|
dc.date.issued |
2013 |
|
dc.identifier.uri |
http://ir.kdu.ac.lk/handle/345/1446 |
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dc.description |
article full text |
en_US |
dc.description.abstract |
The aim of this study was to assess three dimensional set-up errors for three dimensional conformal radiation therapy (3-DCRT) at National Cancer Institute,Maharagama (NCIM). This study included 50 patients from each head and neck, brain and pelvic cases and 300 Portal images. Set-up errors were obtained by comparing Digitally reconstructed radiographs (DRR) and Electronic portal imaging device (EPID) images. The mean displacements for all images were compared using Kruskal-Wallis test analysis with the threshold ? = 0.05 which indicated significant differences within the major three axes. (Brain-p< 0.0001,Head and Neck-p= 0.001, pelvic-p< 0.0001). The values of portal verification for brain, head and neck and pelvic cases are within boundaries which are 88%, 83% and 78% respectively. The set-up margins were within tolerance for all three cases in all directions. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
three dimensional conformal radiation therapy |
en_US |
dc.subject |
setup errors |
en_US |
dc.subject |
digitally reconstructed radiographs |
en_US |
dc.subject |
electronic portal images |
en_US |
dc.title |
Analysis of random and systematic errors in three dimensional conformal radiation therapy - a study at National Cancer Institute, Maharagama |
en_US |
dc.type |
Article Full Text |
en_US |
dcterms.bibliographicCitation |
Thasanthan, L., Croos, A., & Piyasena, W. (2013). Analysis of random and systematic errors in three dimensional conformal radiation therapy - a study at National Cancer Institute, Maharagama. In KDU International Research Symposium Proceedings (pp. 158–161). General Sir John Kotelawala Defence University. https://doi.org/http://ir.kdu.ac.lk/handle/345/1446 |
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dc.identifier.pgnos |
158-161 |
en_US |