Ultrasound point shear wave elastography assessment of liver and spleen stiffness: effect of training on repeatability of measurements

Ferraioli, Giovanna; Tinelli, Carmine; Lissandrin, Raffaella; Zicchetti, Mabel; Bernuzzi, Stefano; Salvaneschi, L.; Fı̀lice, Carlo

doi:10.1007/s00330-014-3140-y

Cited by 84 publications

(72 citation statements)

References 26 publications

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“…Second, SWE of the prostate was performed by a single radiologist, and as a result, interobserver reproducibility could not be evaluated. Further studies are warranted to resolve this issue, as the degree of training has been observed to have an effect on repeatability of SWE measurements [23]. Third, although we assessed the intraobserver reproducibility using two independent and sequential measurements at the identical location, the TRUS probe was not removed and reapplied between each acquisition.…”

Section: Discussionmentioning

confidence: 99%

Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

et al. 2015

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Section: Discussionmentioning

confidence: 99%

Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

et al. 2015

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“…On the other hand, the ability to visually control elasticity maps in real time and to choose the Bproper^one for LS measurement could be criticized as a potential source of subjectivity. The reliability of real-time two-dimensional (RT 2D)-SWE for the estimation of LF severity appears to be comparable to other SE methods, with somewhat better performance reported for the early stages of LF [5][6][7][8][9][10][11]. In this study, we evaluated the performance of RT 2D-SWE in a population of patients with CVH by comparing LS as obtained by RT 2D-SWE to LF stage as defined histopathologically and to cirrhosis stage defined by clinical criteria.…”

Section: Introductionmentioning

confidence: 94%

Liver and spleen stiffness and their ratio assessed by real-time two dimensional-shear wave elastography in patients with liver fibrosis and cirrhosis due to chronic viral hepatitis

et al. 2015

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“…However, they questioned the necessity of taking ten repeated measurements, especially for good-quality examinations [3]. Moreover, the number of hepatic shear wave velocity (SWV) measurements acquired varied from three to twenty in previous studies [5–11]. …”

Section: Introductionmentioning

confidence: 99%

Optimal Acquisition Number for Hepatic Shear Wave Velocity Measurements in Children

Shin

Kim

et al. 2016

PLoS ONE

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ObjectiveTo investigate the minimum optimal acquisition number of hepatic shear wave velocities (SWVs) on ultrasound elastography in children.Materials and MethodsWe prospectively performed hepatic supersonic shear wave elastography in children of four groups (group A-C, healthy children, group A with 0–5 years old; group B with 6–10 years old; group C with 11–18 years old; and group D, children with previous Kasai operation) with free breathing (FB) and breath holding (BH) status, if possible. SWVs were measured fifteen times for each child at a 4 cm depth for the right lobe using a 1–6 MHz convex transducer. Mean SWVs from three, five, and seven acquisitions were compared to the mean SWV from fifteen measurements, using an intraclass correlation coefficient (ICC) analyzed with the 1,000 times bootstrap method.ResultsTotal eighty-eight children were included (25 children in group A, 30 children in group B, 21 children in group C, and 12 children in group D). The mean SWVs from fifteen measurements in FB status were 5.5 ± 1.3 kPa for groups A-C together and 8.0 ± 2.2 kPa for group D. For all groups together, mean SWVs from the three (ICC 0.944 and 0.937), five (ICC 0.958 and 0.938) and seven (ICC 0.969 and 0.941) acquisitions demonstrated almost perfect agreement with the reference of fifteen acquisitions in both FB and BH status, respectively. A subgroup analysis showed three measurements were in almost perfect agreement during FB for groups B-D and strong agreement (ICC 0.675) for group A.ConclusionThree acquisitions can be enough for hepatic SWVs in children more than 6 years old regardless of breathing status or hepatic pathology. More acquisitions are recommended for children under the age of 5 years during FB.

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Ultrasound point shear wave elastography assessment of liver and spleen stiffness: effect of training on repeatability of measurements

Abstract: Reproducibility of SS measurements depends on the expertise of the operator. To achieve good reproducibility between measurements a training period is required. A learning curve in pSWE acquisition should be taken into account. SS measurements are less reproducible than LS measurements.

Cited by 84 publications

References 26 publications

Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

Shear wave elastography assessment in the prostate: an intraobserver reproducibility study

Liver and spleen stiffness and their ratio assessed by real-time two dimensional-shear wave elastography in patients with liver fibrosis and cirrhosis due to chronic viral hepatitis

Optimal Acquisition Number for Hepatic Shear Wave Velocity Measurements in Children

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