Quantification of severe liver iron overload using MRI offset echoes.

Area of Science:

• Radiology and Medical Imaging
• Hepatology
• Biomarkers of Iron Metabolism

Background:

• Magnetic resonance imaging (MRI) is the standard for assessing liver iron overload.
• Multi gradient recalled echo (MGRE) sequences measuring T2* are commonly used.
• MGRE T2* accuracy diminishes with severe liver iron concentrations.

Observation:

• A case of severe liver hemochromatosis presented diagnostic challenges with standard MRI.
• An easily implemented MRI offset echo sequence was utilized for improved accuracy.
• This novel sequence provided a more precise estimation of liver iron concentration (LIC).

Findings:

• The offset echo sequence accurately quantified severe liver iron overload.
• Treatment adjustments led to decreased ferritin and LIC.
• These reductions were undetectable using the standard MGRE T2* method.

Implications:

• Offset echo MRI offers a more accurate method for severe liver iron overload assessment.
• Improved LIC monitoring can optimize hemochromatosis treatment.
• This technique enhances clinical management of iron metabolism disorders.