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( a ) Diagram of solitary hepatoma located in segments 8 and 5. ( b ) Selective administration of a subsegmental boost dose (>190 Gy) confined to the tumor bearing segments 8 and 5 (anterior right lobe) to ensure maximal tumor necrosis. ( c ) Selective administration of lobar dose (80–120 Gy) to the non–tumor-bearing segments 6 and 7 (posterior right lobe) to induce contralateral hypertrophy.
