scholarly journals Shear Wave Elastography and Shear Wave Dispersion Imaging in the Assessment of Liver Disease in Alpha1-Antitrypsin Deficiency

Diagnostics ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 629
Author(s):  
Marten Schulz ◽  
Moritz Kleinjans ◽  
Pavel Strnad ◽  
Münevver Demir ◽  
Theresa M. Holtmann ◽  
...  
Keyword(s):  
Liver Disease ◽  
Shear Wave ◽  
Transient Elastography ◽  
Liver Steatosis ◽  
Shear Wave Elastography ◽  
Wave Dispersion ◽  
Suitable Method ◽  
Antitrypsin Deficiency ◽  
Alpha1 Antitrypsin ◽  
Attenuation Imaging

Liver affection of Alpha1-antitrypsin deficiency (AATD) can lead to cirrhosis and hepatocellular carcinoma (HCC). A noninvasive severity assessment of liver disease in AATD is urgently needed since laboratory parameters may not accurately reflect the extent of liver involvement. Preliminary data exist on two-dimensional shear wave elastography (2D-SWE) being a suitable method for liver fibrosis measurement in AATD. AATD patients without HCC were examined using 2D-SWE, shear wave dispersion imaging (SWD) and transient elastography (TE). Furthermore, liver steatosis was assessed using the controlled attenuation parameter (CAP) and compared to the new method of attenuation imaging (ATI). 29 AATD patients were enrolled, of which 18 had the PiZZ genotype, eight had PiMZ, two had PiSZ and one had a PiZP-Lowell genotype. 2D-SWE (median 1.42 m/S, range 1.14–1.83 m/S) and TE (median 4.8 kPa, range 2.8–24.6 kPa) values displayed a significant correlation (R = 0.475, p < 0.05). 2D-SWE, ATI (median 0.56 dB/cm/MHz, range 0.43–0.96 dB/cm/MHz) and CAP (median 249.5 dB/m, range 156–347 dB/m) values were higher in PiZZ when compared to other AATD genotypes. This study provides evidence that 2D-SWE is a suitable method for the assessment of liver disease in AATD. The newer methods of SWD and ATI require further evaluation in the context of AATD.

THE COMPARATIVE STUDY OF TRANSIENT ELASTOGRAPHY AND SHEAR WAVE ELASTOGRAPHY OF LIVER IN PATIENTS OF CHRONIC LIVER DISEASE.

2021 ◽  
pp. 9-11
Author(s):  
Vikas Poonia ◽  
Kuldeep mendiratta ◽  
Menu bagaratta ◽  
Usha jaipal
Keyword(s):  
Liver Disease ◽  
Chronic Liver Disease ◽  
Shear Wave ◽  
Transient Elastography ◽  
Liver Stiffness ◽  
Shear Wave Elastography ◽  
Chronic Liver ◽  
Wave Pressure ◽  
Medical College ◽  
The Comparative Study

we aim to compare transient elastography and shear wave elastography in chronic liver disease patients for liver stiffness. Our objective was to calculate mean shear wave pressure by transient elastography and shear wave elastography methods and to compare the outcome of these two methods.A total of 190 Chronic Liver disease patients who clinically recommended transient elastography and shear wave elastography in Department of Radiodiagnosis SMS Medical College Jaipur.The mean shear wave pressure for transient elastography and ultrasound shear wave elastography was 10.77±6.88 and 10.88±7.05, respectively.

scholarly journals Diagnostic accuracy of point shear wave elastography and transient elastography for staging hepatic fibrosis in patients with non-alcoholic fatty liver disease: a meta-analysis

BMJ Open ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. e021787 ◽  
Author(s):  
Weixi Jiang ◽  
Sirun Huang ◽  
Hua Teng ◽  
Peipei Wang ◽  
Meng Wu ◽  
...  
Keyword(s):  
Liver Disease ◽  
Liver Fibrosis ◽  
Fatty Liver ◽  
Shear Wave ◽  
Fatty Liver Disease ◽  
Transient Elastography ◽  
Shear Wave Elastography ◽  
Advanced Fibrosis ◽  
Alcoholic Fatty Liver ◽  
Alcoholic Fatty Liver Disease

ObjectiveThis study aimed to assess the accuracy of staging liver fibrosis in patients with non-alcoholic fatty liver disease (NAFLD) usingpoint shear wave elastography (pSWE) and transient elastography (TE).SettingRelevant records on NAFLD were retrieved from PubMed, Embase, Web of Science and the China National Knowledge Infrastructure databases up to 20 December 2017. A bivariate mixed-effects model was conducted to combine sensitivity, specificity, positive likelihood ratio, negative likelihood ratio and area under the summary receiver operating characteristic curve (AUC) between pSWE and TE. A sensitivity analysis was implemented to explore the source of heterogeneity.ParticipantsPatients with NAFLD who had a liver stiffness measurement using pSWE and TE before liver biopsy were enrolled according to the following criteria: 2×2 contingency tables can be calculated via the reported number of cases; sensitivity and specificity were excluded according to the following criteria: history of other hepatic damage, such as chronic hepatitis C, concurrent active hepatitis B infection, autoimmune hepatitis, suspicious drug usage and alcohol abuse.ResultsNine pSWE studies comprising a total of 982 patients and 11 TE studies comprising a total of 1753 patients were included. For detection of significant fibrosis, advanced fibrosis and cirrhosis, the summary AUC was 0.86 (95% CI 0.83 to 0.89), 0.94 (95% CI 0.91 to 0.95) and 0.95 (95% CI 0.93 to 0.97) for pSWE, and the summary AUC was 0.85 (95% CI 0.82 to 0.88), 0.92 (95% CI 0.89 to 0.94) and 0.94 (95% CI 0.93 to 0.97) for TE, respectively. The proportion of failure measurement was over tenfold as common with TE using an M probe compared with pSWE.ConclusionpSWE and TE, providing precise non-invasive staging of liver fibrosis in NAFLD, are promising techniques, particularly for advanced fibrosis and cirrhosis.

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