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Improving Delivery Accuracy of Stereotactic Body Radiotherapy to a Moving Tumor Using Simplified Volumetric Modulated Arc Therapy - Fig 2

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posted on 22.06.2016, 19:28 by Young Eun Ko, Byungchul Cho, Su Ssan Kim, Si Yeol Song, Eun Kyung Choi, Seung Do Ahn, Byongyong Yi

Virtual PTV, a pseudo target for an optimal field aperture: a) the PTV (red) and the isodose volume (blue) that covered 95% of PTV when each field aperture was set such that MLC (yellow) was tightly fitted to the PTV in its beam’s-eye view; b) the isodose volume (blue) that covered 95% of PTV after MLC (yellow) of each field was readjusted to fit the shape of the virtual PTV in its beam’s-eye view. Abbreviations: PTV, planning target volume; MLC, multileaf collimator.