Intra- and Interoperator Reproducibility of Acoustic Radiation Force Impulse (ARFI) Elastography–Preliminary Results

Bota, Simona; Sporea, Ioan; Şirli, Roxana; Popescu, Alina; Dănilă, Mirela; Costachescu, Dan

doi:10.1016/j.ultrasmedbio.2012.02.032

Cited by 98 publications

(76 citation statements)

References 31 publications

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“…Inter-observer agreement is reported in various studies at different ICC (intra-class coefficients correlation), from 0.71 [27] to 0.47 [47] or even 0.31 [48], being smaller than those for the assessment of liver fibrosis [49,50]. These variations are explained by the deeper location of the native kidney compared to the liver, by the different experience of the operators in the field of renal US elastography, or may be due to the type of kidney examined, native or transplanted [27].…”

Section: Ultrasound Elastography In Renal Diseasesmentioning

confidence: 88%

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

et al. 2016

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In the last decade ultrasound elastography, an already widely used technique in the diagnosis of hepatic fibrosis, has raised the attention of nephrologists as a potential valuable noninvasive tool for the diagnosis of renal fibrosis. Due to renal deep location and anatomic complexity, the shear wave techniques are the most appropriate elastography methods for exploring native kidneys. Recent research offers promising results, but further larger studies are required for a better standardization of this method and also for establishing reference values of normal kidney elasticity. This article reviews the studies conducted for exploring the native kidney, highlighting the advantages and limitations of ultrasound elastography for assessing fibrosis development in chronic kidney diseases.

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Section: Ultrasound Elastography In Renal Diseasesmentioning

confidence: 88%

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

et al. 2016

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“…In a meta-analysis study, ARFI demonstrated a satisfactory ability to predict higher-stage liver fibrosis (F = 3) and liver cirrhosis (F = 4) [15]. However, inflammation, variation, and other factors have significant impacts on the interpretation [16][17][18][19][20][21][22]. In our previous study as well as in others, ARFI had a poorer performance in the measurement of liver fibrosis in chronic hepatitis B than in chronic hepatitis C [16].…”

Section: Introductionmentioning

confidence: 69%

Interpretation US Elastography in Chronic Hepatitis B with or without Anti-HBV Therapy

et al. 2017

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Inflammation has significant impacts on liver fibrosis measurement by ultrasound elastography. The interpretation requires further optimization in patients with or without anti-viral therapy. We prospectively enrolled a consecutive series of patients with chronic hepatitis B who received liver histology analysis and acoustic radiation force impulse (ARFI). 146 patients who underwent liver biopsy (50.9%) or tumor resection (49.1%) were enrolled. 34 patients (23.3%) had been receiving anti-hepatitis B therapy of various duration. The areas under the receiver-operating characteristic (AUROC) for the diagnosis of Metavir F4 by mean ARFI was 0.820 in the non-treatment group and 0.796 in the treatment group. The ARFI tended to be not lower (100%) than the corresponding Metavir grading in patients with treatment within 12 months, equal (75%) from 13 to 31 months, and lower (71.4%) after 32 months. We conclude that ARFI is a reliable tool for measurement of liver fibrosis in chronic hepatitis B patients with ALT (alanine aminotransferase) <5x the upper limit of normal. For those patients under anti-HBV therapy, the optimal timing for ARFI analysis will be over 1-2.5 years of nucleos(t)ide analogue therapy. The ARFI measurement after 2.5 years tends to be lower than the corresponding histology grading.

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“…A higher inter-observer agreement was obtained for pSWE measurements of liver tissue. Bota et al reported an ICC of 0.81 in both healthy and pathologic liver tissue [36] and Guzmán-Aroca et al revealed an ICC of 0.86 in healthy adult livers [37].…”

Section: Discussionmentioning

confidence: 99%

Point shear wave elastography (pSWE) using Acoustic Radiation Force Impulse (ARFI) imaging: a feasibility study and norm values for renal parenchymal stiffness in healthy children and adolescents

et al. 2017

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Aims: To evaluate the applicability of point shear wave elastography (pSWE) for measuring renal parenchymal stiffness in healthy children and adolescents and to establish norm values for shear wave speed (SWS) using two ARFI methods and ultrasound probes.Material and methods: We prospectively investigated 264 children (43.9% males). pSWE (Virtual TouchTM Quantification and Virtual TouchTM Imaging Quantification (VTQ and VTIQ; Siemens, Germany)) was performed in the renal cortex of 528 healthy kidneys using a 1-6 MHz convex and a 4-9 MHz linear ultrasound probe in ventrolateral and dorsal examinations. Feasibility and reproducibility of pSWE measurements were evaluated. SWS values were analysed with regard to age, body dimensions, kidney volume and measuring depth.Results: pSWE measurements were successful in >95% of subjects using the low and in <60% using the high-frequency probe. Mean SWS values (m/s) differed by method and probe: 2.10±0.43 (VTQ1-6MHz, convex, ventrolateral), 2.30±0.37 (VTQ1-6MHz, convex, dorsal), 1.58±0.44 (VTQ4-9MHz, linear, dorsal) and 1.96±0.27 (VTIQ4-9MHz, linear, dorsal). SWS was positively correlated with age, weight and body height, but independent of sex, BMI, or kidney volume and depth.Conclusions: pSWE (VTQ) is a feasible method to evaluate renal parenchymal stiffness in children of all ages. SWS values are age and weight dependent and differ significantly between high- and low-frequency probes. High-frequency probes and VTIQ should only be used in children <10 years.

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Intra- and Interoperator Reproducibility of Acoustic Radiation Force Impulse (ARFI) Elastography–Preliminary Results

Cited by 98 publications

References 31 publications

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

Value of ultrasound elastography in the diagnosis of native kidney fibrosis.

Interpretation US Elastography in Chronic Hepatitis B with or without Anti-HBV Therapy

Point shear wave elastography (pSWE) using Acoustic Radiation Force Impulse (ARFI) imaging: a feasibility study and norm values for renal parenchymal stiffness in healthy children and adolescents

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