Comparison of Two Different Speckle Tracking Software Systems: Does the Method Matter?
Background: Echocardiographic speckle tracking strain has gained clinical importance. However, the comparability of measurements between different software systems is not well defined. Methods: In 47 healthy subjects left ventricular (LV) two-dimensional (2D) peak strain and time to peak strain (TTP...
| Publicado en: | Echocardiography Vol. 28; no. 5; pp. 539 - 548 |
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| Autores principales: | , , , , , , , , |
| Formato: | diagnostic images pictorial research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
May2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104897114&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104897114 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 07422822 GSE jtl: Echocardiography issn: 07422822 maglogo: Y pubinfo: dt: May2011 vid: 28 iid: 5 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 104897114 60572975 10.1111/j.1540-8175.2011.01386.x NLM21517954 104897114 ppf: 539 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Comparison of Two Different Speckle Tracking Software Systems: Does the Method Matter? aug: au: Biaggi, Patric Carasso, Shemy Garceau, Patrick Greutmann, Matthias Gruner, Christiane Tsang, Wendy Rakowski, Harry Agmon, Yoram Woo, Anna affil: Division of Cardiology, Peter Munk Cardiac Program, Toronto General Hospital, University Health Network, Toronto, Ontario, Canada sug: subj: Echocardiography Methods Software Image Interpretation, Computer Assisted Heart Ventricle, Left Ultrasonography Comparative Studies Pearson's Correlation Coefficient Human Canada Israel Intrarater Reliability Interrater Reliability Descriptive Statistics Paired T-Tests One-Way Analysis of Variance Post Hoc Analysis Data Analysis Software Male Female Adult Middle Age Reproducibility of Results Adult: 19-44 years Middle Aged: 45-64 years Male Female ab: Background: Echocardiographic speckle tracking strain has gained clinical importance. However, the comparability of measurements between different software systems is not well defined. Methods: In 47 healthy subjects left ventricular (LV) two-dimensional (2D) peak strain and time to peak strain (TTP) generated by EchoPAC (2DS) and velocity vector imaging (VVI) were compared. For each type of strain (longitudinal [LS], circumferential [CS], and radial strain [RS]) we compared global, anatomical level and segmental values. Results: When comparing 2DS to VVI, Pearson correlation coefficients (r) of global LS, CS, and RS were 0.68, 0.44, and 0.59, respectively (all P < 0.05). Correlation of global TTP was higher: 0.81(LS), 0.80 (CS), and 0.68 (RS), all P < 0.01. Segmental peak strain differed significantly between 2DS and VVI in 8/18 (LS), 17/18 (CS), and 15/18 (RS) LV segments (P < 0.05). However, segmental TTP significantly differed only in 5/18 (LS), 7/18 (CS), and 4/18 (RS) of LV segments. Similar strain gradients were found for both systems: apical strain was higher than basal and midventricular strain in LS and CS, with a reversed pattern for RS (P < 0.05). Conclusion: TTP strain as well as strain gradients were comparable between VVI and 2DS, but most peak strain values were not. The software-dependency of peak strain values must be considered in clinical application. Further studies comparing the diagnostic and prognostic accuracy of strain values generated by different software systems are mandatory. (Echocardiography 2011;28:539-547) pubtype: Academic Journal doctype: diagnostic images pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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