Inclusion Criteria:  Brain-dead donor Age ≥18 years old No restriction on the part of the donor or his family regarding the use of the data for research purposes. No fibrous appearance of the graft (visual assessment), corresponding to a Metavir score ≥ F2  Exclusion Criteria:  Living donor Donor within the Maastricht III criteria (cardiac arrest) Pre-existing hepatic injury / trauma preventing the intraoperative use of the pocket spectrometer History of supra-mesocolic surgery or peritonitis leading to perihepatic adhesions (preventing the use of pocket spectrometer)  History of chemotherapy -- Biological cholestasis:  GGT> 400 IU / L or total bilirubin ≥ 60micromol / L or conjugated bilirubin ≥ 30micromol / L