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KMID : 1164220130250010069
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Journal of Korean Society for Radiotherapeutic Technology
2013 Volume.25 No. 1 p.69 ~ p.75
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A Study on a Comparative Analysis of 2D and 3D Planning Using CT Simulator for Transbronchial Brachytherapy
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Seo Dong-Rin
Kim Dae-Sup
Back Geum-Mun
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Abstract
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Purpose: Transbronchial brachytherapy used in the two-dimensional treatment planning difficult to identify the
location of the tumor in the affected area to determine the process analysis. In this study, we have done a
comparative analysis for the patient’s treatment planning using a CT simulator.
Materials and Methods: The analysis was performed by the patients who visited the hospital to June 2012. The
patient carried out CT-image by CT simulator, and we were plan to compare with a two-dimensional and threedimensional treatment planning using a Oncentra Brachy planning system (Nucletron, Netherland).
Results: The location of the catheter was confirmed the each time on a treatment planning for fractionated
transbronchial brachytherapy. GTV volumes were 3.5 cm3 and 3.3 cm3. Also easy to determine the dose distribution
of the tumor, the errors of a dose delivery were confirmed dose distribution of the prescibed dose for GTV. In the
first treatment was 92% and the second was 88%.
Conclusion: In order to compensate for the problem through a two-dimensional treatment planning, it is necessary
to be tested process for the accurate identification and analysis of the treatment volume and dose distribution.
Quantitatively determine the dose delivery error process that is reflected to the treatment planning is required.
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KEYWORD
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transbronchial brachytherapy, 3D planning brachytherapy, lung cancer
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