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KMID : 0357520160390030391
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Journal of Radiological Science and Technology
2016 Volume.39 No. 3 p.391 ~ p.397
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Evaluation of Dose According to the Volume and Respiratory Range during SBRT in Lung Cancer
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Lee Deuk-Hee
Park Eun-Tae
Kim Jung-Hoon
Kang Se-Sik
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Abstract
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Stereotactic body radiotherapy is effective technic in radiotherapy for low stage lung cancer. But lung cancer is affected by respiratory so accurately concentrate high dose to the target is very difficult. In this study, evaluated the target volume according to how to take the image. And evaluated the dose by photoluminescence glass dosimeter according to how to contour the volume and respiratory range. As a result, evaluated the 4D CT volume was 10.4 cm3 which was closest value of real size target. And in dose case is internal target volume dose was 10.82, 16.88, 21.90 Gy when prescribed dose was 10, 15, 20 Gy and it was the highest dose. Respiratory gated radiotherapy dose was more higher than internal target volume. But it made little difference by respiratory range. Therefore, when moving cancer treatment, acquiring image by 4D CT, contouring internal target volume and respiratory gated radiotherapy technic would be the best way.
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KEYWORD
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Stereotactic body radiotherapy, Photoluminescence glass dosimeter, Internal target volume, Respiratory gated radiotherapy
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