Review
Copyright ©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Hepatol. Apr 18, 2015; 7(5): 769-776
Published online Apr 18, 2015. doi: 10.4254/wjh.v7.i5.769
Importance of imaging and recent developments in diagnosis of nonalcoholic fatty liver disease
Mustafa Koplay, Mesut Sivri, Hasan Erdogan, Alaaddin Nayman
Mustafa Koplay, Mesut Sivri, Hasan Erdogan, Alaaddin Nayman, Department of Radiology, Medical Faculty of Selcuk University, 42031 Konya, Turkey
Author contributions: All the authors contributed to this manuscript.
Conflict-of-interest: The authors have no declared conflicts of interest.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Mustafa Koplay, MD, Department of Radiology, Medical Faculty of Selcuk University, the Central Campus, 42031 Konya, Turkey. koplaymustafa@hotmail.com
Telephone: +90-332-2243800
Received: September 2, 2014
Peer-review started: September 2, 2014
First decision: September 28, 2014
Revised: December 27, 2014
Accepted: January 9, 2015
Article in press: January 12, 2015
Published online: April 18, 2015
Abstract

Nonalcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease and is a major public health problem worldwide. It is a spectrum that includes simple steatosis, nonalcoholic steatohepatitis (NASH), fibrosis and cirrhosis. Recently, NAFLD prevalence in children and adolescents has increased too. The increasing prevalence has resulted in NASH-related chronic liver disease. Therefore, early diagnosis and treatment is quite important. Although liver biopsy is still the gold standard for diagnosis and staging of NAFLD, particularly for the diagnosis of NASH, imaging methods such as ultrasonography, computed tomography, magnetic resonance imaging with chemical shift imaging and especially magnetic resonance spectroscopy and elastography have been increasingly approved as noninvasive alternative methods. The aim of this review is to analyze the diagnostic accuracy and limitations of the imaging methods and recent developments in the diagnosis of NAFLD.

Keywords: Nonalcoholic fatty liver disease, Imaging methods, Nonalcoholic steatohepatitis, Elastography, Magnetic resonance spectroscopy

Core tip: Nonalcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease. Although liver biopsy is still the gold standard for diagnosis and staging of NAFLD, particularly for the diagnosis of nonalcoholic steatohepatitis (NASH), imaging methods have been increasingly accepted as noninvasive methods. Magnetic resonance spectroscopy is one of the most correct imaging methods for noninvasive evaluation of fatty liver. Elastography is primarily used for the noninvasive evaluation of liver fibrosis and NASH.