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Nondiffuse fatty infiltration of the liver: does the uptake of iron-oxide increase or decrease at SPIO-enhanced MR imaging?

Abstract：

PURPOSE:To clarify whether the uptake of SPIO increases or decreases in areas of fatty change compared with surrounding areas of nonfatty change at SPIO-enhanced MR imaging. MATERIALS AND METHODS:Approval for this retrospective study was obtained from our institutional review board. This study included 14 patients with nondiffuse fatty infiltration of the liver who underwent SPIO-enhanced MR imaging. Additionally, 30 patients without nondiffuse fatty infiltration of the liver were also evaluated. RESULTS:Among 14 patients, areas of fatty change showed relatively high signal intensity in 7 patents, indicating decreased uptake of SPIO in areas of fatty change. In these 7 patients, 4 had mild cirrhosis and 3 did not have cirrhosis. The mean percentage of signal intensity loss (42%) of fatty areas was significantly lower (p<0.007) than that of adjacent areas of nonfatty change (52%). In the remaining 7 of 14 patients, areas of fatty change showed relatively low signal intensity, indicating increased uptake of SPIO in areas of fatty change. Among these 7 patients, 6 had advanced cirrhosis. The mean percentage of signal intensity loss (47%) of fatty areas was significantly higher (p<0.008) than that of adjacent areas of nonfatty change (31%). CONCLUSION:The uptake of SPIO generally decreased in areas of fatty change compared with normal liver parenchyma at SPIO-enhanced MR imaging. However, in patients with advanced cirrhosis, areas of fatty change shows relatively low signal intensity because the uptake of SPIO in surrounding areas of nonfatty change severely decreased probably due to liver fibrosis.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Onoda H,Ito K,Tanabe M,Shimizu A,Matsunaga N

doi

10.1016/j.ejrad.2011.04.004

subject

Has Abstract

pub_date

2011-08-01 00:00:00

pages

e113-6

issue

2

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(11)00381-0

journal_volume

79

pub_type

杂志文章

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