Accuracy of an automated transthoracic echocardiographic tool for 3D assessment of left heart chamber volumes.
Aims The feasibility and accuracy of an automated adaptive algorithm (Heart Model) for the quantification of left heart chamber volumes and left ventricular ejection fraction has been reported earlier. An improved version of the algorithm is available, and we aimed to test its accuracy compared with...
| Publicado en: | Echocardiography Vol. 34; no. 2; pp. 199 - 210 |
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| Autores principales: | , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Feb2017
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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=121443900&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121443900 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 07422822 GSE jtl: Echocardiography issn: 07422822 maglogo: Y pubinfo: dt: Feb2017 vid: 34 iid: 2 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 121443900 121443900 121443900 10.1111/echo.13436 121443900 ppf: 199 ppct: 11 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Accuracy of an automated transthoracic echocardiographic tool for 3D assessment of left heart chamber volumes. aug: au: Spitzer, Ernest Ren, Ben Soliman, Osama I. I. Zijlstra, Felix Van Mieghem, Nicolas M. Geleijnse, Marcel L. affil: Thoraxcenter, Erasmus University Medical Center, Rotterdam The Netherlands sug: subj: Algorithms Evaluation Heart Ventricle, Left Ultrasonography Echocardiography, Three-Dimensional Heart Atrium, Left Ultrasonography Validity Ventricular Ejection Fraction Descriptive Statistics Human Observer Bias Software Stroke Volume Ventricular Function, Left Interrater Reliability Intrarater Reliability Male Female Aged Middle Age Adult T-Tests Test-Retest Reliability Data Analysis Software P-Value Fisher's Exact Test Pearson's Correlation Coefficient Automation Diastole Academic Medical Centers Netherlands Confidence Intervals Systole Aged: 65+ years Middle Aged: 45-64 years Adult: 19-44 years Male Female ab: Aims The feasibility and accuracy of an automated adaptive algorithm (Heart Model) for the quantification of left heart chamber volumes and left ventricular ejection fraction has been reported earlier. An improved version of the algorithm is available, and we aimed to test its accuracy compared with manual 3D echocardiography. Methods and Results Apical 3D transthoracic datasets were obtained in 67 patients. Acquisitions covering ventricles and atria were performed for analysis using the automated software (Heart Model, Philips Healthcare). In addition, acquisitions focused on the left ventricle were acquired for left ventricle manual 3D measurements ( QLAB 10 3 DQA, Philips Healthcare). Automated results using endocardial contouring settings at 50% showed a strong correlation with manual 3D measurements ( r=.84-.97). Left ventricular end-diastolic volumes were underestimated (bias −5.9 mL, LOA ±38.5 mL), with no significant differences in other parameters. Intra-observer variability using the automated algorithm was zero for all parameters given the lack of human interaction. Manual corrections of the automatic algorithm introduced small but significant differences in volumes but not in ejection fraction when compared with automatic results. Manually corrected results of the automatic algorithm were not significantly different from those obtained with manual 3D echocardiography, except for a small underestimation of left atrial volumes (bias −2.1 mL, LOA ±15.2 mL). Conclusions The current improved version of the automated adaptive algorithm is accurate for the assessment of left heart chamber volumes, albeit a small underestimation of left ventricular end-diastolic volume is seen, when compared with manual 3D echocardiography. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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