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Carbon-ion radiotherapy for the right upper lobe adenocarcinoma (stage IB). (A) Computed tomography before treatment. (B) The dose distribution for lung cancer. The red, orange, purple, green, and blue lines showed dose levels of 95%, 90%, 70%, 50%, and 30%, respectively. (C) Computed tomography 3 months after treatment. (D) Computed tomography 84 months after treatment. This patient had no local recurrence.
