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Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques
Purpose To investigate the dose calculation accuracy in water medium of the Advanced Collapsed cone Engine (ACE) for three sizes of COMS eye plaques loaded with low‐energy I‐125 seeds. Methods A model of the Oncura 6711 I‐125 seed was created for use with ACE in Oncentra® Brachy (OcB) using primary‐...
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| Published in: | Medical physics (Lancaster) 2018-03, Vol.45 (3), p.1276-1286 |
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| cites | cdi_FETCH-LOGICAL-c3556-8a0df9b1b9be4b0732e67230ba7bf00d8a2b2b407f597daf6b8f25e64fe68c7f3 |
| container_end_page | 1286 |
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| container_title | Medical physics (Lancaster) |
| container_volume | 45 |
| creator | Morrison, Hali Menon, Geetha Larocque, Matthew P. Veelen, Bob Niatsetski, Yury Weis, Ezekiel Sloboda, Ron S. |
| description | Purpose
To investigate the dose calculation accuracy in water medium of the Advanced Collapsed cone Engine (ACE) for three sizes of COMS eye plaques loaded with low‐energy I‐125 seeds.
Methods
A model of the Oncura 6711 I‐125 seed was created for use with ACE in Oncentra® Brachy (OcB) using primary‐scatter separated (PSS) point dose kernel and Task Group (TG) 43 datasets. COMS eye plaque models of diameters 12, 16, and 20 mm were introduced into the OcB applicator library based on 3D CAD drawings of the plaques and Silastic inserts. To perform TG‐186 level 1 commissioning, treatment plans were created in OcB for a single source in water and for each COMS plaque in water for two scenarios: with only one centrally loaded seed, or with all seed positions loaded. ACE dose calculations were performed in high accuracy mode with a 0.5 × 0.5 × 0.5 mm3 calculation grid. The resulting dose data were evaluated against Monte Carlo (MC) calculated doses obtained with MCNP6, using both local and global percent differences.
Results
ACE doses around the source for the single seed in water agreed with MC doses on average within |
| doi_str_mv | 10.1002/mp.12776 |
| format | article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1993010720</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1993010720</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3556-8a0df9b1b9be4b0732e67230ba7bf00d8a2b2b407f597daf6b8f25e64fe68c7f3</originalsourceid><addsrcrecordid>eNp1kMtOwzAQRS0EoqUg8QXISzYpYzuJkyWqeFQqAglYR3YyRkZOHOKGqgskPoFv5EsIlMeK1Z3FmTOaS8ghgykD4Cd1O2VcynSLjHksRRRzyLfJGCCPIx5DMiJ7ITwCQCoS2CUjnotMSM7G5GXe2KVVjuKzcr1aWt9Qb-hp9ayaEis6886pNgxT6RukZ82DHaLyAWmpXNm7r5VAbUNXaokdrbGyfU2N7-j8_fWN8YQGxCpQ1Qy266tbimukrVNPPYZ9smOUC3jwnRNyf352N7uMFtcX89npIipFkqRRpqAyuWY61xhrkIJjKrkAraQ2AFWmuOY6BmmSXFbKpDozPME0NphmpTRiQo433rbzn3eXRW1DicNrDfo-FCzPBTCQHP7QsvMhdGiKtrO16tYFg-Kz7KJui6-yB_To29rr4e1f8KfdAYg2wMo6XP8rKq5uNsIPe1qJGg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1993010720</pqid></control><display><type>article</type><title>Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques</title><source>Wiley</source><creator>Morrison, Hali ; Menon, Geetha ; Larocque, Matthew P. ; Veelen, Bob ; Niatsetski, Yury ; Weis, Ezekiel ; Sloboda, Ron S.</creator><creatorcontrib>Morrison, Hali ; Menon, Geetha ; Larocque, Matthew P. ; Veelen, Bob ; Niatsetski, Yury ; Weis, Ezekiel ; Sloboda, Ron S.</creatorcontrib><description>Purpose
To investigate the dose calculation accuracy in water medium of the Advanced Collapsed cone Engine (ACE) for three sizes of COMS eye plaques loaded with low‐energy I‐125 seeds.
Methods
A model of the Oncura 6711 I‐125 seed was created for use with ACE in Oncentra® Brachy (OcB) using primary‐scatter separated (PSS) point dose kernel and Task Group (TG) 43 datasets. COMS eye plaque models of diameters 12, 16, and 20 mm were introduced into the OcB applicator library based on 3D CAD drawings of the plaques and Silastic inserts. To perform TG‐186 level 1 commissioning, treatment plans were created in OcB for a single source in water and for each COMS plaque in water for two scenarios: with only one centrally loaded seed, or with all seed positions loaded. ACE dose calculations were performed in high accuracy mode with a 0.5 × 0.5 × 0.5 mm3 calculation grid. The resulting dose data were evaluated against Monte Carlo (MC) calculated doses obtained with MCNP6, using both local and global percent differences.
Results
ACE doses around the source for the single seed in water agreed with MC doses on average within < 5% inside a 6 × 6 × 6 cm3 region, and within < 1.5% inside a 2 × 2 × 2 cm3 region. The PSS data were generated at a higher resolution within 2 cm from the source, resulting in this improved agreement closer to the source due to fewer approximations in the ACE dose calculation. Average differences in both investigated plaque loading patterns in front of the plaques and on the plaque central axes were ≤ 2.5%, though larger differences (up to 12%) were found near the plaque lip.
Conclusions
Overall, good agreement was found between ACE and MC dose calculations for a single I‐125 seed and in front of the COMS plaques in water. More complex scenarios need to be investigated to determine how well ACE handles heterogeneous patient materials.</description><identifier>ISSN: 0094-2405</identifier><identifier>EISSN: 2473-4209</identifier><identifier>DOI: 10.1002/mp.12776</identifier><identifier>PMID: 29383721</identifier><language>eng</language><publisher>United States</publisher><subject>ACE ; dosimetry ; Eye Neoplasms - radiotherapy ; eye plaque brachytherapy ; Iodine Radioisotopes - therapeutic use ; Melanoma - radiotherapy ; model‐based dose calculations ; Monte Carlo ; Monte Carlo Method ; Radiation Dosage ; Radiotherapy Dosage ; Software ; Water</subject><ispartof>Medical physics (Lancaster), 2018-03, Vol.45 (3), p.1276-1286</ispartof><rights>2018 American Association of Physicists in Medicine</rights><rights>2018 American Association of Physicists in Medicine.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3556-8a0df9b1b9be4b0732e67230ba7bf00d8a2b2b407f597daf6b8f25e64fe68c7f3</citedby><cites>FETCH-LOGICAL-c3556-8a0df9b1b9be4b0732e67230ba7bf00d8a2b2b407f597daf6b8f25e64fe68c7f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29383721$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Morrison, Hali</creatorcontrib><creatorcontrib>Menon, Geetha</creatorcontrib><creatorcontrib>Larocque, Matthew P.</creatorcontrib><creatorcontrib>Veelen, Bob</creatorcontrib><creatorcontrib>Niatsetski, Yury</creatorcontrib><creatorcontrib>Weis, Ezekiel</creatorcontrib><creatorcontrib>Sloboda, Ron S.</creatorcontrib><title>Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques</title><title>Medical physics (Lancaster)</title><addtitle>Med Phys</addtitle><description>Purpose
To investigate the dose calculation accuracy in water medium of the Advanced Collapsed cone Engine (ACE) for three sizes of COMS eye plaques loaded with low‐energy I‐125 seeds.
Methods
A model of the Oncura 6711 I‐125 seed was created for use with ACE in Oncentra® Brachy (OcB) using primary‐scatter separated (PSS) point dose kernel and Task Group (TG) 43 datasets. COMS eye plaque models of diameters 12, 16, and 20 mm were introduced into the OcB applicator library based on 3D CAD drawings of the plaques and Silastic inserts. To perform TG‐186 level 1 commissioning, treatment plans were created in OcB for a single source in water and for each COMS plaque in water for two scenarios: with only one centrally loaded seed, or with all seed positions loaded. ACE dose calculations were performed in high accuracy mode with a 0.5 × 0.5 × 0.5 mm3 calculation grid. The resulting dose data were evaluated against Monte Carlo (MC) calculated doses obtained with MCNP6, using both local and global percent differences.
Results
ACE doses around the source for the single seed in water agreed with MC doses on average within < 5% inside a 6 × 6 × 6 cm3 region, and within < 1.5% inside a 2 × 2 × 2 cm3 region. The PSS data were generated at a higher resolution within 2 cm from the source, resulting in this improved agreement closer to the source due to fewer approximations in the ACE dose calculation. Average differences in both investigated plaque loading patterns in front of the plaques and on the plaque central axes were ≤ 2.5%, though larger differences (up to 12%) were found near the plaque lip.
Conclusions
Overall, good agreement was found between ACE and MC dose calculations for a single I‐125 seed and in front of the COMS plaques in water. More complex scenarios need to be investigated to determine how well ACE handles heterogeneous patient materials.</description><subject>ACE</subject><subject>dosimetry</subject><subject>Eye Neoplasms - radiotherapy</subject><subject>eye plaque brachytherapy</subject><subject>Iodine Radioisotopes - therapeutic use</subject><subject>Melanoma - radiotherapy</subject><subject>model‐based dose calculations</subject><subject>Monte Carlo</subject><subject>Monte Carlo Method</subject><subject>Radiation Dosage</subject><subject>Radiotherapy Dosage</subject><subject>Software</subject><subject>Water</subject><issn>0094-2405</issn><issn>2473-4209</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRS0EoqUg8QXISzYpYzuJkyWqeFQqAglYR3YyRkZOHOKGqgskPoFv5EsIlMeK1Z3FmTOaS8ghgykD4Cd1O2VcynSLjHksRRRzyLfJGCCPIx5DMiJ7ITwCQCoS2CUjnotMSM7G5GXe2KVVjuKzcr1aWt9Qb-hp9ayaEis6886pNgxT6RukZ82DHaLyAWmpXNm7r5VAbUNXaokdrbGyfU2N7-j8_fWN8YQGxCpQ1Qy266tbimukrVNPPYZ9smOUC3jwnRNyf352N7uMFtcX89npIipFkqRRpqAyuWY61xhrkIJjKrkAraQ2AFWmuOY6BmmSXFbKpDozPME0NphmpTRiQo433rbzn3eXRW1DicNrDfo-FCzPBTCQHP7QsvMhdGiKtrO16tYFg-Kz7KJui6-yB_To29rr4e1f8KfdAYg2wMo6XP8rKq5uNsIPe1qJGg</recordid><startdate>201803</startdate><enddate>201803</enddate><creator>Morrison, Hali</creator><creator>Menon, Geetha</creator><creator>Larocque, Matthew P.</creator><creator>Veelen, Bob</creator><creator>Niatsetski, Yury</creator><creator>Weis, Ezekiel</creator><creator>Sloboda, Ron S.</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201803</creationdate><title>Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques</title><author>Morrison, Hali ; Menon, Geetha ; Larocque, Matthew P. ; Veelen, Bob ; Niatsetski, Yury ; Weis, Ezekiel ; Sloboda, Ron S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3556-8a0df9b1b9be4b0732e67230ba7bf00d8a2b2b407f597daf6b8f25e64fe68c7f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>ACE</topic><topic>dosimetry</topic><topic>Eye Neoplasms - radiotherapy</topic><topic>eye plaque brachytherapy</topic><topic>Iodine Radioisotopes - therapeutic use</topic><topic>Melanoma - radiotherapy</topic><topic>model‐based dose calculations</topic><topic>Monte Carlo</topic><topic>Monte Carlo Method</topic><topic>Radiation Dosage</topic><topic>Radiotherapy Dosage</topic><topic>Software</topic><topic>Water</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Morrison, Hali</creatorcontrib><creatorcontrib>Menon, Geetha</creatorcontrib><creatorcontrib>Larocque, Matthew P.</creatorcontrib><creatorcontrib>Veelen, Bob</creatorcontrib><creatorcontrib>Niatsetski, Yury</creatorcontrib><creatorcontrib>Weis, Ezekiel</creatorcontrib><creatorcontrib>Sloboda, Ron S.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Medical physics (Lancaster)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morrison, Hali</au><au>Menon, Geetha</au><au>Larocque, Matthew P.</au><au>Veelen, Bob</au><au>Niatsetski, Yury</au><au>Weis, Ezekiel</au><au>Sloboda, Ron S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques</atitle><jtitle>Medical physics (Lancaster)</jtitle><addtitle>Med Phys</addtitle><date>2018-03</date><risdate>2018</risdate><volume>45</volume><issue>3</issue><spage>1276</spage><epage>1286</epage><pages>1276-1286</pages><issn>0094-2405</issn><eissn>2473-4209</eissn><abstract>Purpose
To investigate the dose calculation accuracy in water medium of the Advanced Collapsed cone Engine (ACE) for three sizes of COMS eye plaques loaded with low‐energy I‐125 seeds.
Methods
A model of the Oncura 6711 I‐125 seed was created for use with ACE in Oncentra® Brachy (OcB) using primary‐scatter separated (PSS) point dose kernel and Task Group (TG) 43 datasets. COMS eye plaque models of diameters 12, 16, and 20 mm were introduced into the OcB applicator library based on 3D CAD drawings of the plaques and Silastic inserts. To perform TG‐186 level 1 commissioning, treatment plans were created in OcB for a single source in water and for each COMS plaque in water for two scenarios: with only one centrally loaded seed, or with all seed positions loaded. ACE dose calculations were performed in high accuracy mode with a 0.5 × 0.5 × 0.5 mm3 calculation grid. The resulting dose data were evaluated against Monte Carlo (MC) calculated doses obtained with MCNP6, using both local and global percent differences.
Results
ACE doses around the source for the single seed in water agreed with MC doses on average within < 5% inside a 6 × 6 × 6 cm3 region, and within < 1.5% inside a 2 × 2 × 2 cm3 region. The PSS data were generated at a higher resolution within 2 cm from the source, resulting in this improved agreement closer to the source due to fewer approximations in the ACE dose calculation. Average differences in both investigated plaque loading patterns in front of the plaques and on the plaque central axes were ≤ 2.5%, though larger differences (up to 12%) were found near the plaque lip.
Conclusions
Overall, good agreement was found between ACE and MC dose calculations for a single I‐125 seed and in front of the COMS plaques in water. More complex scenarios need to be investigated to determine how well ACE handles heterogeneous patient materials.</abstract><cop>United States</cop><pmid>29383721</pmid><doi>10.1002/mp.12776</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0094-2405 |
| ispartof | Medical physics (Lancaster), 2018-03, Vol.45 (3), p.1276-1286 |
| issn | 0094-2405 2473-4209 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1993010720 |
| source | Wiley |
| subjects | ACE dosimetry Eye Neoplasms - radiotherapy eye plaque brachytherapy Iodine Radioisotopes - therapeutic use Melanoma - radiotherapy model‐based dose calculations Monte Carlo Monte Carlo Method Radiation Dosage Radiotherapy Dosage Software Water |
| title | Initial evaluation of Advanced Collapsed cone Engine dose calculations in water medium for I‐125 seeds and COMS eye plaques |
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