Irradiation of lung and esophagus tumors: A comparison of dose distributions calculated by anisotropic analytical algorithm and pencil beam convolution algorithm, a retrospective dosimetric study

Hdl Handle:
http://hdl.handle.net/10147/583466
Title:
Irradiation of lung and esophagus tumors: A comparison of dose distributions calculated by anisotropic analytical algorithm and pencil beam convolution algorithm, a retrospective dosimetric study
Authors:
Amankwaa-Frempong, Emmanuel; Vernimmen, Frederik; Blay, Samuel; Ezhilalan, Ramalingam
Citation:
Irradiation of lung and esophagus tumors: A comparison of dose distributions calculated by anisotropic analytical algorithm and pencil beam convolution algorithm, a retrospective dosimetric study 2014, 2 (2):020210 International Journal of Cancer Therapy and Oncology
Publisher:
International Journal of Cancer Therapy and Oncology
Journal:
International Journal of Cancer Therapy and Oncology
Issue Date:
9-Apr-2014
URI:
http://hdl.handle.net/10147/583466
DOI:
10.14319/ijcto.0202.10
Additional Links:
http://ijcto.org/index.php/IJCTO/article/view/Frempong
Abstract:
Purpose: The aim of this study was to evaluate dosimetric differences between pencil beam convolution (PBC) algorithm and anisotropic analytical algorithm (AAA) calculations in patients with lung and esophageal cancers. Methods: The existing plans calculated with PBC for 60 patients treated in 2012 were recalculated with AAA maintaining the same beam geometry and dose monitor units. For these plans, dose prescription ranges were 41.4 Gy to 56.0 Gy for esophageal cancers and 50.0 Gy to 64.0 Gy for lung cancers. Dosimetric variables were the 95% PTV coverage, mean PTV dose, maximum spinal cord dose, lung V5Gy, and lung V20Gy. Results: The 95% PTV coverage’s for both lung and esophageal tumors were reduced when recalculated with AAA. Maximum spinal cord doses for lung cancer patients were reduced by 0.7 Gy and by 0.3 Gy for esophageal cancer patients on AAA. On the other hand, lung V5Gy had 3.5% increase for both lung and esophageal cancer patients on AAA, whereas lung V20Gy increased by 1.5% also on AAA for esophageal cancer patients. Conclusion: These clinical results confirm the differences between AAA and PBC algorithms as observed in phantom dosimetric studies, and give an indication of the clinical implications of changing from one calculation algorithm to another.
Item Type:
Article
Language:
en
Keywords:
CANCER; RADIOTHERAPY
ISSN:
23304049

Full metadata record

DC FieldValue Language
dc.contributor.authorAmankwaa-Frempong, Emmanuelen
dc.contributor.authorVernimmen, Frederiken
dc.contributor.authorBlay, Samuelen
dc.contributor.authorEzhilalan, Ramalingamen
dc.date.accessioned2015-12-09T10:42:02Zen
dc.date.available2015-12-09T10:42:02Zen
dc.date.issued2014-04-09en
dc.identifier.citationIrradiation of lung and esophagus tumors: A comparison of dose distributions calculated by anisotropic analytical algorithm and pencil beam convolution algorithm, a retrospective dosimetric study 2014, 2 (2):020210 International Journal of Cancer Therapy and Oncologyen
dc.identifier.issn23304049en
dc.identifier.doi10.14319/ijcto.0202.10en
dc.identifier.urihttp://hdl.handle.net/10147/583466en
dc.description.abstractPurpose: The aim of this study was to evaluate dosimetric differences between pencil beam convolution (PBC) algorithm and anisotropic analytical algorithm (AAA) calculations in patients with lung and esophageal cancers. Methods: The existing plans calculated with PBC for 60 patients treated in 2012 were recalculated with AAA maintaining the same beam geometry and dose monitor units. For these plans, dose prescription ranges were 41.4 Gy to 56.0 Gy for esophageal cancers and 50.0 Gy to 64.0 Gy for lung cancers. Dosimetric variables were the 95% PTV coverage, mean PTV dose, maximum spinal cord dose, lung V5Gy, and lung V20Gy. Results: The 95% PTV coverage’s for both lung and esophageal tumors were reduced when recalculated with AAA. Maximum spinal cord doses for lung cancer patients were reduced by 0.7 Gy and by 0.3 Gy for esophageal cancer patients on AAA. On the other hand, lung V5Gy had 3.5% increase for both lung and esophageal cancer patients on AAA, whereas lung V20Gy increased by 1.5% also on AAA for esophageal cancer patients. Conclusion: These clinical results confirm the differences between AAA and PBC algorithms as observed in phantom dosimetric studies, and give an indication of the clinical implications of changing from one calculation algorithm to another.en
dc.language.isoenen
dc.publisherInternational Journal of Cancer Therapy and Oncologyen
dc.relation.urlhttp://ijcto.org/index.php/IJCTO/article/view/Frempongen
dc.rightsArchived with thanks to International Journal of Cancer Therapy and Oncologyen
dc.subjectCANCERen
dc.subjectRADIOTHERAPYen
dc.titleIrradiation of lung and esophagus tumors: A comparison of dose distributions calculated by anisotropic analytical algorithm and pencil beam convolution algorithm, a retrospective dosimetric studyen
dc.typeArticleen
dc.identifier.journalInternational Journal of Cancer Therapy and Oncologyen
dc.description.fundingNo fundingen
dc.description.provinceMunsteren
dc.description.peer-reviewpeer-reviewen
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