The Use of MRI Apparent Diffusion Coefficient Value (ADC Value) to Assess Liver Cirrhosis
The Use of MRI Apparent Diffusion Coefficient Value (ADC Value) to Assess Liver Cirrhosis in Hepatitis C Patients: Observational Case Control Study
Study Overview
Detailed Description
Introduction Hepatitis is known to induce severe liver diseases such as liver cirrhosis and liver cancer which are serious threats to public health. The evaluation of the severity of liver cirrhosis is very important for the selection of appropriate treatment plan and the monitoring of patient response to treatment [1].
Noninvasive Child-Pugh classification is a common method to assess liver function, treatment outcome and prognosis in patients with chronic liver cirrhosis [2].
Accurate staging of liver fibrosis (commonly determined by liver biopsy) is critical because it determines the indication of antiviral treatment and prognosis of patients with chronic viral hepatitis. For example, patients with cirrhosis are at higher risk of end-stage liver disease, portal hypertension, and hepatocellular carcinoma and are less likely to respond to antiviral therapy [8-9].
However, liver biopsy is relatively invasive, limited by sample size, and difficult to repeat. Thus, noninvasive tools to assess the degree of fibrosis of the whole liver are urgently needed. Several noninvasive MRI techniques have been investigated for the diagnosis of liver fibrosis and cirrhosis, including diffusion weighted imaging (DWI) [20-24], MR Elastography [25], and perfusion-weighted imaging [26-27].
DWI is a particularly appealing method for the diagnosis of liver fibrosis because it is easy to implement and process, without the need for contrast agents. Apparent diffusion coefficient (ADC) has been shown to be a promising marker of fibrosis and cirrhosis by several independent investigators [20-24].
Recently magnetic resonance Diffusion Weighted Imaging (DWI) has become another noninvasive approach to assess liver cirrhosis by analyzing the changes of water diffusion based on the apparent diffusion coefficient (ADC) [3].
Several studies showed that ADC values of cirrhotic liver were correlated with the results of Child-Pugh classification for the evaluation of the severity of liver cirrhosis [4-7].
However, whether ADC values of cirrhotic liver are correlated with the results of Child-Pugh classification, it remains unclear. The DWI is a specific MRI technique that evaluates the motion of, mainly, water protons in the tissue. The apparent diffusion coefficient (ADC) is the most frequently used DWI measure and provides useful information about inflammation, perfusion and local cell breakdown. The ADC map is calculated based on exponential fitting of DWI over multiple b-values and is used to measure diffusion quantitatively. Prior studies have shown that in liver fibrosis water diffusion may be diminished by extracellular collagen fibers and proteoglycans, thus, reduced ADC values have been reported for liver fibrosis. [10,11,12,13,14,15,16,17,18,20].
These findings suggest DWI could be a useful imaging technique to evaluate fibrosis. In more recent studies, researchers examined the relationship between the stages of hepatic fibrosis and ADC values [14,15,16,19,20].
Study Type
Enrollment (Anticipated)
Contacts and Locations
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Hepatitis C positive patients with Child-Pugh (A) classification.
Exclusion Criteria:
- Advanced liver cirrhosis with decompensated liver or patients with malignant hepatic focal lesions.
- Cases with proven structural abnormalities, history of liver disease or risk factors of liver disease will be excluded from healthy controls.
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
|---|---|
|
hepatitis C child pugh's class A
patients are examined with MRI
|
MRI scan of the patients liver with DWI and acquisition of ADC value.
|
|
normal individuals
controls cases are examined with MRI
|
MRI scan of the patients liver with DWI and acquisition of ADC value.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
changes of MRI ADC value to assess early liver cirrhosis.
Time Frame: 30 minutes
|
Hepatitis C patients With child pugh's classification A as Assessed by MRI ADC value changes.
|
30 minutes
|
Collaborators and Investigators
Sponsor
Investigators
- Study Director: sherif abd elal, MD, Assiut university lecturer
Study record dates
Study Major Dates
Study Start (ANTICIPATED)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- ADC value and cirrhotic liver
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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