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Examples of GTVMR and GTVCT contoured by RO1 (red line) and RO2 (orange line). A, A 71-year-old female with a third primary non-small cell lung cancer presenting as clinical stage T1N0. B, A 68-year-old female with lung metastasis of hepatocellular carcinoma origin. Image on the left and right for each patient correspond to the simulation CT and MR images, respectively.
