当前位置： SCI文献检索 > EUROPEAN JOURNAL OF RADIOLOGY期刊下所有文献 > Alveolar echinococcosis of the liver: diffusion-weighted MRI findings and potential role in lesion characterisation.

Alveolar echinococcosis of the liver: diffusion-weighted MRI findings and potential role in lesion characterisation.

Abstract：

PURPOSE:To report the diffusion-weighted MRI findings in alveolar echinococcosis (AE) of the liver and evaluate the potential role of apparent diffusion coefficients (ADCs) in the characterisation of lesions. MATERIALS AND METHODS:We retrospectively included 22 patients with 63 AE liver lesions (≥1 cm), examined with 3-T liver MRI, including a free-breathing diffusion-weighted single-shot echo-planar imaging sequence (b-values=50, 300 and 600 s/mm(2)). Two radiologists jointly assessed the following lesion features: size, location, presence of cystic and/or solid components (according to Kodama's classification system), relative contrast enhancement, and calcifications (on CT). The ADC(total), ADC(min) and ADC(max) were measured in each lesion and the surrounding liver parenchyma. RESULTS:Three type 1, 19 type 2, 17 type 3, three type 4 and 21 type 5 lesions were identified. The mean (±SD) ADC(total), ADC(min) and ADC(max) for all lesions were 1.73 ± 0.50, 0.76 ± 0.38 and 2.63 ± 0.76 × 10(-3)mm(2)/s, respectively. The mean ADC(total) for type 1, type 2, type 3, type 4 and type 5 lesions were 1.97 ± 1.01, 1.76 ± 0.53, 1.73 ± 0.41, 1.15 ± 0.42 and 1.76 ± 0.44 × 10(-3)mm(2)/s, respectively. No significant differences were found between the five lesion types, except for type 4 (p=0.0363). There was a significant correlation between the presence of a solid component and low ADCmin (r=0.39, p=0.0016), whereas an inverse correlation was found between the relative contrast enhancement and ADCtotal (r=-0.34, p=0.0072). CONCLUSION:The ADCs of AE lesions are relatively low compared to other cystic liver lesions, which may help in the differential diagnosis. Although ADCs are of little use to distinguish between the five lesion types, their low value reflects the underlying solid component.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Becce F,Pomoni A,Uldry E,Halkic N,Yan P,Meuli R,Schmidt S

doi

10.1016/j.ejrad.2013.12.025

subject

Has Abstract

pub_date

2014-04-01 00:00:00

pages

625-31

issue

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(13)00668-2

journal_volume

pub_type

杂志文章

在线工具

Alveolar echinococcosis of the liver: diffusion-weighted MRI findings and potential role in lesion characterisation.