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- Title
Measurement and Mapping of Liver Iron Concentrations Using Magnetic Resonance Imaging.
- Authors
ST. PIERRE, TIMOTHY G.; CLARK, PAUL R.; CHUA‐ANUSORN, WANIDA
- Abstract
Measurement of liver iron concentration (LIC) is an important clinical procedure in the management of transfusional iron overload with iron chelation. LIC gives an indication of over- or underchelation. Although chemical assay of needle biopsy samples from the liver has been considered the "gold standard" of LIC measurement, needle biopsy sampling errors can be surprisingly large owing to the natural spatial variation of LIC throughout the liver and the small size of biopsy specimens. A magnetic resonance imaging technique has now been developed that enables safe noninvasive measurement and imaging of LIC with a known accuracy and precision. Measurements of LIC can be made over the range of LIC encountered in clinical practice. The technique is based on the measurement and imaging of proton transverse relaxation rates (R2) within the liver. The R2 imaging technique can be implemented on most clinical 1.5-T MRI instruments, making it readily available to the clinical community.
- Subjects
LIVER biopsy; MAGNETIC resonance imaging; IRON chelates; CHELATION therapy; CLINICAL medicine
- Publication
Annals of the New York Academy of Sciences, 2005, Vol 1054, Issue 1, p379
- ISSN
0077-8923
- Publication type
Article
- DOI
10.1196/annals.1345.046