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Estimation of liver function using T2* mapping on gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid enhanced magnetic resonance imaging.

Abstract：

PURPOSE:To investigate the usefulness of T2* mapping of liver on gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced MRI for estimating liver function. MATERIALS AND METHODS:33 patients were classified into 3 groups as follows: normal liver function (NLF) (n = 7); mild liver damage (MLD) (n = 16) with Child-Pugh A; severe liver damage (SLD) (n = 10) with Child-Pugh B. T2*-weighted gradient-echo (T2*W-GRE) and T1-weighted gradient-echo (T1W-GRE) images were obtained before and after Gd-EOB-DTPA administration (3, 8, 13, and 18 min; 5, 10,15, and 20min; respectively). T2* mapping of liver was calculated from T2*W-GRE, then T2* values of liver and T2* reduction rates of T2* value between pre- and post-contrast enhancement were measured. The increase rates of liver-to-muscle signal intensity (LMS) ratio on T1W-GRE between pre- and post-contrast enhancement were calculated. RESULTS:T2* values on pre- and post-contrast showed no significant differences among three groups. Significant differences in T2* reduction rates were found among groups, and those of LCB were lower than those of other groups (NLF:MLD:SLD, 3.8:6.0:0.6% at 3 min, 8.2:10.3:1.0% at 8 min, 10.7:11.5:1.2% at 13 min, and 16.1:13.2:3.5% at 18 min, respectively) (P<0.05). Significant differences in increase rates of LMS ratio on T1W-GRE were identified (NLF:MLD:SLD, 1.53:1.46:1.35 at 5 min, 1.68:1.64:1.37 at 10 min, 1.79:1.76:1.44 at 15 min, and 1.89:1.78:1.49 at 20 min, respectively). CONCLUSION:T2* reduction rate and increase rate of LMS ratio on T1W-GRE may allow us estimation of liver function according to Child-Pugh score.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Katsube T,Okada M,Kumano S,Imaoka I,Kagawa Y,Hori M,Ishii K,Tanigawa N,Imai Y,Kudo M,Murakami T

doi

10.1016/j.ejrad.2011.03.073

subject

Has Abstract

pub_date

2012-07-01 00:00:00

pages

1460-4

issue

7

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(11)00345-7

journal_volume

81

pub_type

杂志文章

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