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Axial (A) and coronal (B) CT images of the gross tumor volume (GTV; red dashed lines), including the sternum lesions receiving 4 Gy (blue lines), 8 Gy (red lines), and 12 Gy (white lines). The catheters were implanted, penetrating the tumor and reaching the front of the sternum. The dental putty can also be seen (white arrows)
