Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system
A new generation telecobalt unit, Theratron Equinox-80, (MDS Nordion, Canada) has been evaluated. It is equipped with a single 60-degree motorized wedge (MW), four universal wedges (UW) for 150, 300, 450 and 600. MW was configured in Eclipse (Varian, Palo Alto, USA) 3D treatment planning system (TPS...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wolters Kluwer Medknow Publications
2007-01-01
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| Series: | Journal of Medical Physics |
| Subjects: | |
| Online Access: | http://www.jmp.org.in/article.asp?issn=0971-6203;year=2007;volume=32;issue=1;spage=29;epage=33;aulast=Kinhikar |
| _version_ | 1818526260337311744 |
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| author | Kinhikar Rajesh Sharma Smriti Upreti Rituraj Tambe Chandrashekhar Deshpande Deepak |
| author_facet | Kinhikar Rajesh Sharma Smriti Upreti Rituraj Tambe Chandrashekhar Deshpande Deepak |
| author_sort | Kinhikar Rajesh |
| collection | DOAJ |
| description | A new generation telecobalt unit, Theratron Equinox-80, (MDS Nordion, Canada) has been evaluated. It is equipped with a single 60-degree motorized wedge (MW), four universal wedges (UW) for 150, 300, 450 and 600. MW was configured in Eclipse (Varian, Palo Alto, USA) 3D treatment planning system (TPS). The profiles and central axis depth doses (CADD) were measured with radiation field analyzer blue water phantom for MW. These profiles and CADD for MW were compared with UW in a homogeneous phantom generated in Eclipse for various field sizes. The absolute dose was measured for a field size of 10 x 10 cm2 only in a MEDTEC water phantom at 10 cm depth with a 0.13 cc thimble ion chamber (Scanditronix Wellhofer, Uppsala, Sweden) and a NE electrometer (Nuclear Enterprises, UK). Measured dose with ion chamber was compared with the TPS predicted dose. MW angle was verified on the Equinox for four angles (15o, 30o, 45o and 60o). The variation in measured and calculated dose at 10 cm depth was within 2%. The measured and the calculated wedge angles were in well agreement within 2o. The motorized wedges were successfully configured in Eclipse for four wedge angles. |
| first_indexed | 2024-12-11T06:20:30Z |
| format | Article |
| id | doaj.art-65c50ccc1e3c463a8668d3cdd4b668d0 |
| institution | Directory Open Access Journal |
| issn | 0971-6203 |
| language | English |
| last_indexed | 2024-12-11T06:20:30Z |
| publishDate | 2007-01-01 |
| publisher | Wolters Kluwer Medknow Publications |
| record_format | Article |
| series | Journal of Medical Physics |
| spelling | doaj.art-65c50ccc1e3c463a8668d3cdd4b668d02022-12-22T01:17:51ZengWolters Kluwer Medknow PublicationsJournal of Medical Physics0971-62032007-01-013212933Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning systemKinhikar RajeshSharma SmritiUpreti RiturajTambe ChandrashekharDeshpande DeepakA new generation telecobalt unit, Theratron Equinox-80, (MDS Nordion, Canada) has been evaluated. It is equipped with a single 60-degree motorized wedge (MW), four universal wedges (UW) for 150, 300, 450 and 600. MW was configured in Eclipse (Varian, Palo Alto, USA) 3D treatment planning system (TPS). The profiles and central axis depth doses (CADD) were measured with radiation field analyzer blue water phantom for MW. These profiles and CADD for MW were compared with UW in a homogeneous phantom generated in Eclipse for various field sizes. The absolute dose was measured for a field size of 10 x 10 cm2 only in a MEDTEC water phantom at 10 cm depth with a 0.13 cc thimble ion chamber (Scanditronix Wellhofer, Uppsala, Sweden) and a NE electrometer (Nuclear Enterprises, UK). Measured dose with ion chamber was compared with the TPS predicted dose. MW angle was verified on the Equinox for four angles (15o, 30o, 45o and 60o). The variation in measured and calculated dose at 10 cm depth was within 2%. The measured and the calculated wedge angles were in well agreement within 2o. The motorized wedges were successfully configured in Eclipse for four wedge angles.http://www.jmp.org.in/article.asp?issn=0971-6203;year=2007;volume=32;issue=1;spage=29;epage=33;aulast=KinhikarMotorized wedgequality assurancetelecobalttreatment planning |
| spellingShingle | Kinhikar Rajesh Sharma Smriti Upreti Rituraj Tambe Chandrashekhar Deshpande Deepak Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system Journal of Medical Physics Motorized wedge quality assurance telecobalt treatment planning |
| title | Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| title_full | Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| title_fullStr | Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| title_full_unstemmed | Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| title_short | Characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| title_sort | characterizing and configuring motorized wedge for a new generation telecobalt machine in a treatment planning system |
| topic | Motorized wedge quality assurance telecobalt treatment planning |
| url | http://www.jmp.org.in/article.asp?issn=0971-6203;year=2007;volume=32;issue=1;spage=29;epage=33;aulast=Kinhikar |
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