01-05-2015 | Hepatobiliary-Pancreas
Imaging-based evaluation of liver function: comparison of 99mTc-mebrofenin hepatobiliary scintigraphy and Gd-EOB-DTPA-enhanced MRI
Published in: European Radiology | Issue 5/2015
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Objectives
To compare Gd-EOB-enhanced MRI and 99mTc-mebrofenin hepatobiliary scintigraphy (HBS) as imaging-based liver function tests for separate evaluation of right (RLL) and left liver lobe (LLL) function.
Methods
Fourteen patients underwent Gd-EOB-enhanced MRI and 99mTc-mebrofenin HBS after portal vein embolization within 24 h. Relative enhancement (RE) and hepatic uptake index (HUI) were determined from MRI; and T
max, T
1/2 and mebrofenin uptake were determined from HBS, all values separately for RLL and LLL.
Results
Mebrofenin uptake correlated significantly with HUI and RE for both liver lobes. There was strong correlation of mebrofenin uptake with HUI for RLL (r
2 = 0.802, p = 0.001) and RE for LLL (r
2 = 0.704, p = 0.005) and moderate correlation with HUI for LLL (r
2 = 0.560, p = 0.037) and RE for RLL (r
2 = 0.620, p = 0.018). Correlating the percentage share of RLL function derived from MRI (with HUI) with the percentage of RLL function derived from mebrofenin uptake revealed a strong correlation (r
2 = 0.775, p = 0.002).
Conclusions
Both RE and HUI correlate with mebrofenin uptake in HBS. The results suggest that Gd-EOB-enhanced MRI and 99mTc-mebrofenin HBS may equally be used to separately determine right and left liver lobe function.
Key points
• Information about liver function can be acquired with routine Gd-EOB-MRI.
• Gd-EOB-MRI and
99m
Tc-mebrofenin HBS show elevated function of non-embolized lobe.
• Gd-EOB-MRI and
99m
Tc-mebrofenin HBS can determine lobar liver function.