Objective The effectiveness of treatment decisions and economic outcomes of using gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-DTPA-MRI) were compared with extracellular contrast media-enhanced MRI (ECCM-MRI) and multidetector computed tomography (MDCT) as initial procedures in patients with suspected hepatocellular carcinoma (HCC) in South Korea and Thailand. Methods A decision-tree model simulated the clinical pathway for patients with suspected HCC from the first imaging procedure to a confirmed treatment decision. Input data (probabilities and resource consumptions) were estimated and validated by clinical experts. Costs for diagnostic alternatives and related treatment options were derived from published sources taking into account both payer’s and hospital’s perspectives. Results All experts from Korea and Thailand agreed that Gd-EOB-DTPA-MRI yields the highest diagnostic certainty and minimizes the need for additional confirmatory diagnostic procedures in HCC. In Korea, from the payer’s perspective, total cost was USD $3,087/patient to reach a confirmed treatment decision using Gd-EOB-DTPA-MRI (vs. $3,205/patient for MDCT and $3,403/patient for ECCM-MRI). From the hospital’s perspective, Gd-EOB-DTPA-MRI incurred the lowest cost ($2,289/patient vs. $2,320/patient and $2,528/patient, respectively). In Thailand, Gd-EOB-DTPA-MRI was the least costly alternative for the payer ($702/patient vs. $931/patient for MDCT and $873/patient for ECCM-MRI). From the hospital’s perspective, costs were $1,106/patient, $1,178/patient, and $1,087/patient for Gd-EOB-DTPA-MRI, MDCT, and ECCM-MRI, respectively. Conclusions Gd-EOB-DTPA-MRI as an initial imaging procedure in patients with suspected HCC provides better diagnostic certainty and relevant statutory health insurance cost savings in Thailand and Korea, compared with ECCM-MRI and MDCT.

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