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KMID : 1038720130240040265
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Progress in Medical Physics
2013 Volume.24 No. 4 p.265 ~ p.270
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Differences in Target Volume Delineation Using Typical Radiosurgery Planning System
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Han Su-Cheol
Lee Dong-Joon
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Abstract
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Correct target volume delineation is an important part of radiosurgery treatment planning process. We designed head phantom and performed target delineation to evaluate the volume differences due to radiosurgery treatment planning systems and image acquisition system, CT/MR. Delineated mean target volume from CT scan images was 2.23±0.08 cm3 on BrainSCAN (NOVALS), 2.13±0.07 cm3 on Leksell gamma plan (Gamma Knife) and 2.24±0.10 cm3 on Multi plan (Cyber Knife). For MR images, 2.08±0.06 cm3 on BrainSCAN, 1.94±0.05 cm3 on Leksell gamma plan and 2.15±0.06 cm3 on Multi plan. As a result, Differences of delineated mean target volume due to radiotherapy planning system was 3% to 6%. And overall mean target volume from CT scan images was 6.36% larger than those of MR scan images.
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KEYWORD
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Target volume delineation, Radiosurgery planning system
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