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Quality assurance program for prototype stereotactic system developed for Neptun 10 PC linac

Khoshbin Khoshnazar, A.R. and Bahreyni Toossi, M.T. and Hashemiyan, A.R. and Bahreyni Toosi, M.H. and Salek, R. (2005) Quality assurance program for prototype stereotactic system developed for Neptun 10 PC linac. Iranian Journal of Radiation Research, 3 (2). pp. 73-78. ISSN 23223243 (ISSN)

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Abstract

Background: A prototype stereotactic radiosurgery set was designed and constructed for a Neptun 10 PC linac that is currently being used at Imam Reza hospital in Mashhad. Materials and Methods: A complete qualit y assurance program was designed and performed for the constructed system including isocentric accuracy test, localization accuracy test, dose delivery accuracy test and leakage radiation test. Target simulator, control alignment device and plexiglass phantom which were parts of the developed hardware were used to fulfill quality assurance program. Results: The average isocentric shift resulted from the gantry rotation and couch turning were respectively obtained to be 1.4 and 2 mm. The average localization error in the three coordinates was found to be 2.2 mm. The total treatment uncertainty due to all of the probable errors in the system was equal to 4.32 mm. The dose delivery accuracy test was carried out, the result indicated a 3-7% difference between the given and measured dose. Conclusion: The quality assurance tests showed consistent performance of the constructed system within the accepted limits; however, some inconsistency might exist in certain cases. The safety of SRS method is increased when the overall uncertainty is minimized and the treatment of the lesions adjacent to critical organs is avoided.

Item Type: Article
Additional Information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Iran. J. Radiat. Res. [Field not mapped to EPrints] AD - Medical Physics and Biochemistry Department, Golestan University of Medical Sciences, Gorgan, Iran [Field not mapped to EPrints] AD - Medical Physics Department, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran [Field not mapped to EPrints] AD - Radiotherapy Department of Imam Reza Hospital, Mashhad University of Medical Sciences, Mashhad, Iran [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled Keywords: Linac, Quality assurance, Stereotactic radiosurgery system, accuracy, analytical error, article, computer program, computer system, controlled study, equipment design, Iran, phantom, quality control, quantitative analysis, radiation dose distribution, radiation safety, radiosurgery, simulator, stereotaxic surgery, treatment planning
Subjects: مقالات نمایه شده محققین دانشگاه در سایت ,Web of Science ,Scopus
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 18 Apr 2015 07:02
Last Modified: 05 Feb 2017 10:35
URI: http://eprints.goums.ac.ir/id/eprint/2465

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