Ultrasound point shear wave elastography assessment of liver and spleen stiffness: effect of training on repeatability of measurements.
Objectives: To evaluate reproducibility of measurements of spleen stiffness (SS) and liver stiffness (LS) at several sites by using point shear wave elastography (pSWE) and to investigate any training effect.Methods: Healthy volunteers were consecutively enrolled. Measurements of SS and LS were perf...
| Published in: | European Radiology Vol. 24; no. 6; pp. 1283 - 1290 |
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| Main Authors: | , , , , , , |
| Format: | research Journal Article |
| Published: |
Springer Nature
Jun2014
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=103943427&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103943427 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Jun2014 vid: 24 iid: 6 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103943427 NLM24643497 2012583426 10.1007/s00330-014-3140-y NLM24643497 103943427 ppf: 1283 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Ultrasound point shear wave elastography assessment of liver and spleen stiffness: effect of training on repeatability of measurements. aug: au: Ferraioli, Giovanna Tinelli, Carmine Lissandrin, Raffaella Zicchetti, Mabel Bernuzzi, Stefano Salvaneschi, Laura Filice, Carlo affil: Ultrasound Unit - Infectious Diseases Department, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Via Taramelli 5, 27100, Pavia, Italy, giovanna.ferraioli@unipv.it. sug: subj: Liver Ultrasonography Spleen Ultrasonography Ultrasonography Methods Ultrasonography Standards Adult Cross Sectional Studies Female Human Male Middle Age Observer Bias Prospective Studies Reproducibility of Results Research Subjects Ultrasonography Statistics and Numerical Data Young Adult Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: Objectives: To evaluate reproducibility of measurements of spleen stiffness (SS) and liver stiffness (LS) at several sites by using point shear wave elastography (pSWE) and to investigate any training effect.Methods: Healthy volunteers were consecutively enrolled. Measurements of SS and LS were performed by an expert (observer 1) and a novice (observer 2) at three different sites of liver and spleen. To assess the effect of training the study was conducted in two periods (period 1 and period 2). Concordance correlation coefficient was used to assess intra-observer and inter-observer reproducibility.Results: A total of 92 subjects (67 men and 25 women) were enrolled in the study. Both intra-observer and inter-observer agreement were higher for the liver than for the spleen. Overall, the highest intra-observer and inter-observer agreement were obtained for the assessment of LS through intercostal space, and for measurements at this site there was a significantly better performance of observer 2 after the training period. For both observers, training improved the repeatability of SS measurements at all sites. A good intra-observer agreement was obtained only for measurements at the spleen lower pole.Conclusions: The results of this study show that a learning curve in pSWE acquisition should be taken into account both for SS and LS measurements.Key Points: 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. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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