当前位置： SCI文献检索 > EUROPEAN JOURNAL OF RADIOLOGY期刊下所有文献 > Value of gadoxetic acid-enhanced and diffusion-weighted MR imaging in evaluation of hepatocellular carcinomas with atypical enhancement pattern on contrast-enhanced multiphasic MDCT in patients with chronic liver disease.

Value of gadoxetic acid-enhanced and diffusion-weighted MR imaging in evaluation of hepatocellular carcinomas with atypical enhancement pattern on contrast-enhanced multiphasic MDCT in patients with chronic liver disease.

Abstract：

OBJECTIVE:The purpose of this study was to investigate the value of enhancement kinetics and ancillary imaging findings on gadoxetic acid-enhanced and diffusion-weighted (DW) MR imaging for diagnosing hepatocellular carcinomas (HCCs) without the typical enhancement pattern on contrast-enhanced multiphasic MDCT in patients with chronic liver disease. MATERIALS AND METHODS:Eighty-two surgically confirmed HCCs without the typical enhancement pattern (hypervascular in the arterial phase, followed by washout on the portal or equilibrium phases) on triple-phase MDCT were enrolled in this study. The patients were classified into four categories based on the CT density pattern of arterial and equilibrium phases (isodense-isodense, hypodense-hypodense, isodense-hypodense, and hyperdense-isodense) compared to liver parenchyma. Signal intensity of HCCs on T2-weighted images (T2WI), arterial phase, 3 min late-phase, hepatobiliary phase (HBP) and DW images with a b value of 800 s/mm2 were qualitatively evaluated, and ADC values were measured. Fisher's exact test and Chi-square test were used to compare the frequency and trend of hyperintensity on T2WI, hypointensity on HBP images, hyperintensity on DW images, and histopathologic grades between groups with different CT density patterns. Kruskal-Wallis test was used to compare the ADC value between groups. RESULTS:Thirty and 52 HCCs were categorized as hypervascular (hyperdense-isodense) and non-hypervascular HCCs (3, isodense-isodense; 37, hypodense-hypodense; 12, isodense-hypodense), respectively. Most HCCs showed hyperintensity on T2WI (77/82, 93.9%) and DW images (81/82, 98.8%) and hypointensity on HBP images (80/82, 97.6%). Thirty-eight HCCs (38/82, 46.3%) showed typical HCC enhancement pattern on dynamic MR images. There were no significant differences in the frequency and trend of signal intensity on T2WI, HBP images, DW images, and histopathologic grades with regard to the four CT density patterns (p<0.05). No significant difference in mean ADC values between groups was identified (p<0.05). CONCLUSION:Gadoxetic acid-enhanced and DW MR imaging can help diagnose HCCs with atypical enhancement patterns on multiphasic CT in patients with chronic liver disease.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Kim HS,Kim SH,Kang TW,Song KD,Choi D,Park CK

doi

10.1016/j.ejrad.2014.12.023

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

555-62

issue

4

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(15)00012-1

journal_volume

84

pub_type

杂志文章

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