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Magnetic Resonance Imaging of Liver Transplant
MR imaging increasingly has been adopted for follow-up imaging post –liver transplantation and for diagnosis of its complications. These include vascular and biliary complications as well as post-transplant malignancies. Interpretation of postoperative MR imaging should take into account the surgical technique and expected post-transplant changes. Contrast-enhance d MR imaging has high sensitivity for identification of vascular complications. MR cholangiopancreatography on the other hand is the most accurate noninvasive method for evaluation of biliary complications. (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Roberto Cannella, Anil Dasyam, Frank H. Miller, Amir A. Borhani Source Type: research

Artificial Intelligence in Imaging of Chronic Liver Diseases
Here we review artificial intelligence (AI) models which aim to assess various aspects of chronic liver disease. Despite the clinical importance of hepatocellular carcinoma in the setting of chronic liver disease, we focus this review on AI models which are not lesion-specific and instead review models developed for liver parenchyma segmentation, evaluation of portal circulation, assessment of hepatic fibrosis, and identification of hepatic steatosis. Optimization of these models offers the opportunity to potentially reduce the need for invasive procedures such as catheterization to measure hepatic venous pressure gradient...
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Carl F. Sabottke, Bradley M. Spieler, Ahmed W. Moawad, Khaled M. Elsayes Source Type: research

Liver Imaging Reporting and Data System Comprehensive Guide
This article discusses the technical requirements, major features, and ancillary features of and a systematic approach for using the LI-RADS diagnostic algorithm, with special emphasis on MR imaging. (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Mohab M. Elmohr, Victoria Chernyak, Claude B. Sirlin, Khaled M. Elsayes Source Type: research

Evaluation of Hepatocellular Carcinoma Treatment Response After Locoregional Therapy
Locoregional therapy (LRT) for hepatocellular carcinoma can be used alone or with other treatment modalities to reduce rates of progression, improve survival, or act as a bridge to cure. As the use of LRT expands, so too has the need for systems to evaluate treatment response, such as the World Health Organization and modified Response Evaluation Criteria In Solid Tumors systems and more recently, the Liver Imaging Reporting and Data System (LI-RADS) treatment response algorithm (TRA). Early validation results for LI-RADS TRA have been promising, and as research accrues, the TRA is expected to evolve in the near future. (S...
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Rony Kampalath, Karen Tran-Harding, Richard K.G. Do, Mishal Mendiratta-Lala, Vahid Yaghmai Source Type: research

MR Imaging Contrast Agents
Contrast-enhanced MR imaging plays an important role in the evaluation of patients with chronic liver disease, particularly for detection and characterization of liver lesions. The two most commonly used contrast agents for liver MR imaging are extracellular agents (ECAs) and hepatobiliary agents (HBAs). In patients with liver disease, the main advantage of ECA-enhanced MR imaging is its high specificity for the diagnosis of progressed HCCs. Conversely, HBAs have an additional contrast mechanism, which results in high liver-to-lesion contrast and highest sensitivity for lesion detection in the hepatobiliary phase. Emerging...
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Silvia D. Chang, Guilherme Moura Cunha, Victoria Chernyak Source Type: research

MR Imaging of Chronic Liver Diseases and Liver Cancer
Since its invention almost five decades ago, MR imaging has become an indispensable tool for diagnosing liver diseases, particularly chronic diseases and liver cancer. Nevertheless, the diagnosis and management of liver diseases are still considered a clinical challenge, one that warrants systematic research. This issue of Magnetic Resonance Imaging Clinics of North America, for which we are honored to serve as guest editors, highlights cutting-edge research and future directions in MR imaging of chronic liver diseases and liver cancer. (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Khaled M. Elsayes, Claude B. Sirlin Tags: Preface Source Type: research

Foreword
The diagnosis and management of liver disease are still considered a clinical challenge and one that warrants both clinical and imaging evaluation. MR imaging has become an essential tool for diagnosing a variety of liver diseases, including chronic liver disorders and hepatic neoplasms. This issue of Magnetic Resonance Imaging Clinics of North America is specifically devoted to hepatic imaging, and we are thrilled to have Drs Khaled Elsayes and Claude Sirlin be our Guest Editors. (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Suresh K. Mukherji, Lynne S. Steinbach Source Type: research

MR Imaging of Chronic Liver Diseases and Liver Cancer
MAGNETIC RESONANCE IMAGING CLINICS OF NORTH AMERICA (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Authors: Khaled M. Elsayes, Claude B. Sirlin Source Type: research

Copyright
ELSEVIER (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Source Type: research

Contributors
SURESH K. MUKHERJI, MD, MBA, FACR (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Source Type: research

Contents
Suresh K. Mukherji and Lynne S. Steinbach (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Source Type: research

Forthcoming Issues
Pediatric Neuroimaging: State-of-the-Art (Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Source Type: research

CME Accreditation Page
(Source: Magnetic Resonance Imaging Clinics of North America)
Source: Magnetic Resonance Imaging Clinics of North America - July 7, 2021 Category: Radiology Source Type: research

Neurofluid as Assessed by Diffusion-Weighted Imaging
The glymphatic system hypothesis is associated with the circulation of cerebrospinal fluid (CSF) in the skull and interstitial fluid (ISF) in the brain. There are several imaging techniques to visualize the dynamics of CSF and ISF. Magnetic resonance imaging (MRI) is one of the promising modalities for glymphatic imaging and diffusion MRI is expected imaging tool. Several disorders are associated with glymphatic dysfunction or impairment in the dynamics of CSF or ISF. The Central Nervous System interstitial fluidopathy concept has been proposed to encompass diseases with pathologies that are predominantly associated with a...
Source: Magnetic Resonance Imaging Clinics of North America - April 24, 2021 Category: Radiology Authors: Toshiaki Taoka Source Type: research

Measuring Perfusion
The signal acquired in  vivo using a diffusion-weighted MR imaging (DWI) sequence is influenced by blood motion in the tissue. This means that perfusion information from a DWI sequence can be obtained in addition to thermal diffusion, if the appropriate sequence parameters and postprocessing methods are applied. This is commonly regrouped under the denomination intravoxel incoherent motion (IVIM) perfusion MR imaging. Of relevance, the perfusion information acquired with IVIM is essentially local, quantitative and acquired without intravenous injection of contrast media. The aim of this work is to review the IVIM m ethod ...
Source: Magnetic Resonance Imaging Clinics of North America - April 24, 2021 Category: Radiology Authors: Christian Federau Source Type: research