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Confirmation of the Dose Distribution by Stereotactic Radiosurgery Technique with a Multi-purpose Phantom  

Yoo Hyung Jun (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Kim Il Han (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Ha Sung Whan (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Park Charn Il (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Hur Sun Nyung (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Kang Wee-Saing (Department of Therapeutic Radiology, Institute of Radiation Medicine, Medical Research Center, Seoul National University College of Medicine)
Publication Information
Radiation Oncology Journal / v.20, no.2, 2002 , pp. 179-185 More about this Journal
Abstract
Purpose : For the purpose of quality assurance of self-developed stereotactic radiosurgery system, a multi-purpose phantom was fabricated, and accuracy of radiation dose distribution during radiosurgery was measured using this phantom. Materials and Methods : A farmer chamber, a 0.125 cc ion chamber and a diode detector were used for the dosimetry. Six MV x-ray from a linear accelerator (CL2100C, Varian) with stereotactic radiosurgery technique (Green Knife) was used, and multi-purpose phantom was attached to a stereotactic frame (Fisher type). Dosimetry was done by combinations of locations of the detectors in the phantom, fixed or arc beams, gantry angles $(20^{\circ}\~100^{\circ})$, and size of the circular tertiary collimators (inner diameters of $10\~40\;mm$). Results : The measurement error was less than $0.5\%$ by Farmer chamber, $0.5\%$ for 0.125 cc ion chamber, and less than $2\%$ for diode detector for the fixed beam, single arc beam, and 5-arc beam setup. Conclusion : We confirmed the accuracy of dose distribution with the radiosurgery system developed in our institute and the data from this study would be able to be effectively used for the improvement of quality assurance of stereotactic radiosurgery or fractionated stereotactic radiotherapy system.
Keywords
Stereotactic radiosurgery; Phantom; Dose distribution; Quality assurance;
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  • Reference
1 Leksell L. The stereotaxis method and radiosurgery of the brain. Acta Chir Scand 1951;102:316-319   PUBMED
2 Siddon RL, Barth NH. Stereotaxic localization of intracranial targets. Int J Radiat Oncol Biol Phys 1987;13:1241-1245   DOI   PUBMED   ScienceOn
3 Podgorsak EB. Physics of radiosurgery with linear accelerator. Neurosurg Clin North Am 1992;3:9-34
4 Suh TS, Suh DY, Park SH, et al. Development of 3-D Stereotactic Localization System and Radiation Measurement for Stereotactic Radiosurgery. J Korean Asso Radiat Prot 1995;20:25-36
5 ICRU. Radiation Dosimetry: Electron Beams with Energies between 1 and 50 MeV, ICRU Rep. 35, Bethesda, ICRU Publications, 1984
6 Hartmann GH, Bauer-Kirpes B, Serago CF, et al. Precision and accuracy of stereotactic convergent beam irradiation from a linear accelerator. Int J Radiat Oncol Biol Phys 1994;28:481-492   DOI   PUBMED   ScienceOn
7 Flickinger JC, Kondziolka D, Lunsford LD. Radiosurgery of benign lesions. Semin Radiat Oncol 1995;5:220-224   DOI   ScienceOn
8 Larson DA, Bova F, Eisert D, et al. Consensus statement on stereotactic radiosurgery quality improvement. Int J Radiat Oncol Biol Phys 1994;28:527-530   DOI   ScienceOn
9 Park CI, Ha SW, Kim IH, et al. Development of Seoul National University Hospital Radiosurgery System with a Linear Accelerator. Final Report of Seoul National University Co- operation Study in 1991. 1995
10 Larsson B, Leksell L, Rexed B, et al. The high energy proton beam as a neurosurgical tool. Nature 1958;182:1222-1223   DOI   ScienceOn
11 Leksell L. Cerebral radiosurgery. Gamma thalamotomy in two cases of intractable pain. Acta Chir Scand 1958;134:585-595
12 Ji YH, Lee DH, Cho CK, et al. Development of High Energy Radiation Measurement System with Diode. 1993
13 Johns HE, Curringham JR. The physics of radiology. 4th ed., Charles C The mass, 1983
14 Kim IH, Kang WS, Ha SW, et al. Extracranial Doses with LINAC Stereotactic radiosurgery. J Korean Soc Ther Radiol Oncol 1996;14:159-165
15 Khan FM. The physics of radiation therapy. 2nd ed., Baltimore, William & Wilkins, 1994;260-314
16 Mijnheer BJ. Variation of response to radiation of a nylonwalled ionization chamber induced by humidity changes. Med Phys 1985;12:625
17 Betti oo, Derechinsky VE. Hyperselective encephalic irradiation with linear accelerator. Acta Neurochir 1984;33(suppl):385-390
18 Friedman WA, Bova FJ. The University of Florida Radiosurgery System. Surg Neurol 1989;32:334-342   DOI   ScienceOn
19 Nuclear Associates. Therapy silicon diode detectors for high energy electrons and photons, Manual, 1989
20 Kjellberg RN, Shintani A, Frantz AG, et al. Proton beam therapy in acromegaly. N Eng J Med 1968;278:689-695   DOI   ScienceOn
21 Phillips MH, Frankel KA, Lyman JT, et al. Heavy charged-particle stereotactic radiosurgery: cerebral angiography and CT in the treatment of intracranial vascular malformation. Int J Radiat Oncol Biol Phys 1989;17:419-426   DOI   PUBMED   ScienceOn
22 Low DA, Li Z, Drzymala RE, et al. Minimization of target positioning error in accelerator-based radiosurgery. Med Phys 1995;22:443-448   DOI   ScienceOn