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. 2020 Aug 7;61(6):929–934. doi: 10.1093/jrr/rraa058

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© The Author(s) 2020. Published by Oxford University Press on behalf of The Japanese Radiation Research Society and Japanese Society for Radiation Oncology

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Images, contoured targets and dose distribution in one of the cases: a 46-year-old female descending colon cancer patient with spinal metastases (L3) reirradiated by SBRT. She had undergone palliative radiation therapy for the same spinal metastases at a radiation dose of 30 Gy administered in 10 fractions. The interval between the first radiation therapy and reirradiation was 9.9 months. (A) CT showing the tumor before the reirradiation. (B) MRI showing the tumor before the reirradiation (contrast-enhanced T1-weighted image with fat suppression). (C, D) Contouring (red line: GTV; orange line: CTV; purple line: PTV; yellow line: CTV_sub; light pink line: PTV_sub; green line: kidneys; cyan line: spinal cord). (E, F) dose distribution of the treatment.