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Pheochromocytoma. (a) Unenhanced attenuation values: 43,9 ± 41 HU. (b) Portal-phase attenuation values: 76,6 ± 35 HU. (c) 5′ attenuation values: 73,6 ± 31,9 HU. (d) 10′ attenuation values: 72,5 ± 32,7 HU. Absolute percentage wash-out at 5′ : 9%. Relative percentage wash-out at 5′ : 3,9%. Absolute percentage wash-out at 10′ : 12,5%. Relative percentage wash-out at 10′ : 5,3%.
