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- Title
Assessment of the precision and reproducibility of ventricular volume, function, and mass measurements with ferumoxytol-enhanced 4D flow MRI.
- Authors
Hanneman, Kate; Kino, Aya; Cheng, Joseph Y.; Alley, Marcus T.; Vasanawala, Shreyas S.
- Abstract
<bold>Purpose: </bold>To compare the precision and interobserver agreement of ventricular volume, function, and mass quantification by 3D time-resolved (4D) flow MRI relative to cine steady-state free precession (SSFP).<bold>Materials and Methods: </bold>With Institutional Research Board approval, informed consent, and HIPAA compliance, 22 consecutive patients with congenital heart disease (CHD) (10 males, 6.4 ± 4.8 years) referred for 3T ferumoxytol-enhanced cardiac MRI were prospectively recruited. Complete ventricular coverage with standard 2D short-axis cine SSFP and whole chest coverage with axial 4D flow were obtained. Two blinded radiologists independently segmented images for left ventricular (LV) and right ventricular (RV) myocardium at end systole (ES) and end diastole (ED). Statistical analysis included linear regression, analysis of variance (ANOVA), Bland-Altman (BA) analysis, and intraclass correlation (ICC).<bold>Results: </bold>Significant positive correlations were found between 4D flow and SSFP for ventricular volumes (r = 0.808-0.972, P < 0.001), ejection fraction (EF) (r = 0.900-928, P < 0.001), and mass (r = 0.884-0.934, P < 0.001). BA relative limits of agreement for both ventricles were between -52% to 34% for volumes, -29% to 27% for EF, and -41% to 48% for mass, with wider limits of agreement for the RV compared to the LV. There was no significant difference between techniques with respect to mean square difference of ED-ES mass for either LV (F = 2.05, P = 0.159) or RV (F = 0.625, P = 0.434). Interobserver agreement was moderate to good with both 4D flow (ICC 0.523-0.993) and SSFP (ICC 0.619-0.982), with overlapping confidence intervals.<bold>Conclusion: </bold>Quantification of ventricular volume, function, and mass can be accomplished with 4D flow MRI with precision and interobserver agreement comparable to that of cine SSFP. J. Magn. Reson. Imaging 2016;44:383-392.
- Subjects
HEART ventricle diseases; ANTHROPOMETRY; COMPARATIVE studies; DIAGNOSTIC imaging; LEFT heart ventricle; MAGNETIC resonance imaging; RESEARCH methodology; MEDICAL cooperation; COMPUTERS in medicine; RESEARCH; RESEARCH evaluation; RESEARCH funding; EVALUATION research; CONTRAST media; CARDIAC-gated imaging; STROKE volume (Cardiac output); MAGNETIC resonance angiography
- Publication
Journal of Magnetic Resonance Imaging, 2016, Vol 44, Issue 2, p383
- ISSN
1053-1807
- Publication type
journal article
- DOI
10.1002/jmri.25180