Accurate preoperative graft volume assessment is crucial for successful living donor liver transplantation (LDLT). Although manual and automated computed tomography (CT) volume measurement methods using various volumetric tools are widely used, their accuracy remains uncertain. This study aimed to determine the optimal dry weight correction factor for each method to enhance the prediction of actual graft weight (AGW) and compare the accuracy of different methods.

This study is a retrospective diagnostic accuracy study comparing three liver volumetry methods using preoperative donor CT scans in LDLT.

Inclusion Criteria:

• Patients who underwent hepatectomy for living donor liver transplantation performed by the Department of Surgery at Chungnam National University Hospital under the supervision of the principal investigator.

Exclusion Criteria:

• Patients deemed unsuitable for participation in this clinical study by the investigator.

This study includes patients who underwent hepatectomy for living donor liver transplantation performed at Chungnam National University Hospital. Data will be retrospectively reviewed to compare preoperative estimated graft volume (EGV) to actual graft weight (AGW).

The data will not be shared publicly due to the retrospective nature of the study and privacy protection concerns.