Plant-Animal Research Competition

Four Awards ($1,500 each) + publication expenses

We are announcing a competition for external investigator reports dealing with plant-animal communications, which influence animal/human tissues. Eligible studies can vary in their methodology, but state-of-the-art research submissions are encouraged.

Awards Guidelines and Program:
  1. Four Awards granted ($1,500 each) + reimbursement of publication expenses
  2. All reports prepared according to... read more

Published: 2014-10-24

Impact of Acoustic Radiation Force Impulse Imaging in Clinical Practice of Patients after Orthotopic Liver Transplantation

Dane Wildner, Deike Strobel, Peter C. Konturek, Rüdiger S. Görtz, Roland S. Croner, Markus F. Neurath, Steffen Zopf

(Department of Internal Medicine 1, University Hospital Erlangen, Erlangen, Germany)

Med Sci Monit 2014; 20:2027-2035

DOI: 10.12659/MSM.891126

Background: Acoustic radiation force impulse (ARFI) elastography is a reliable diagnostic device for quantitative non-invasive assessment of liver fibrosis in patients with chronic liver disease. The aim of our prospective study was to evaluate the impact of ARFI in patients after orthotopic liver transplantation (OLT). Therefore, we compared ARFI shear wave velocities with clinical features, non-invasive markers, and the histology of patients following OLT.
Material and Methods: Post-transplant patients underwent a clinical examination and blood samples were taken. B-mode and Doppler ultrasound (US) of the portal vein and the hepatic artery were performed. Subsequently, a minimum of 10 valid ARFI values were measured in the left and right liver lobe. Liver biopsy was performed if indicated.
Results: Between May 2012 and May 2014, 58 Patients after OLT were included in the prospective study. Laboratory markers and aspartate aminotransferase-to-platelet ratio index (APRI) correlated with ARFI values (r=0.44, p<0.001). The histological (n=22) fibrosis score (Ludwig) was significantly correlated with the ARFI of the biopsy site (r=0.55, p=0.008). The mean shear-wave velocities were significantly increased in advanced fibrosis (F≤2 1.57±0.57 m/s; F≥3 2.85±0.66 m/s; p<0.001), obstructive cholestasis and active viral hepatitis. The area under the receiver operating characteristic (AUROC) curves for the accuracy of ARFI were 74% (F≥1), 73% (F≥2), 93% (F≥3), and 80% (=F4).
Conclusions: ARFI elastography correlates well with laboratory values and with noninvasive and invasive markers of fibrosis in patients after... read more

Keywords: Elasticity Imaging Techniques, Liver Cirrhosis, Liver Transplantation, Ultrasonography

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