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• W2949820005 abstract "Cardiac magnetic resonance imaging (CMR) is the gold standard for the assessment of left ventricular (LV) function. However, traditional sequences are time-consuming and require breath-holding. Our aim was to evaluate the image quality of LV functional assessment with a novel, accelerated, free-breathing cine sequence and to compare LV functional parameters between it and a traditional sequence.This was a prospective cohort study of 31 patients with cardiomyopathy. All studies were performed on a 1.5 Tesla scanner. LV function was first determined using contiguous short axis slices covering the left ventricle from the base to the apex acquired with the standard cine sequence. Next, the accelerated sequence was acquired for each patient. The Wilcoxon Matched-Pair Sign Rank Test was used to compare image quality between the accelerated and traditional cine imaging sequences. Standard and accelerated left ventricular volumes and ejection fraction were compared using linear regression. Bland-Altman plots were then constructed to evaluate agreement, interobserver and intraobserver variability for left ventricular volumes and ejection fraction.Mean acquisition time was 29 s for the accelerated sequence vs. 410 s for the traditional sequence. Qualitative assessment of image quality was similar for both sequences (p = 0.23). There were no significant differences in terms of LVEDV, LVESV, LVSV, LV mass and LVEF when calculated from either sequence with very good agreement between the standard and accelerated sequences. The mean differences with 95% limits of agreement were as follows: LV mass (-0.6, -22.9 g, 21.6 g), LVEDV (5.1 mL, -18.4 mL, 28.9 mL), LVEF (-0.3, -5.4, 4.7), LVESV (4.0 mL, -12.0 mL, 20.0 mL), LVSV (1.1 mL, -13.3 mL, 15.5 mL). Interobserver variability ranged from 0.1 to 6.3% while intraobserver variability ranged from 0.1 to 1.8%.The accelerated free-breathing cine sequence performed similarly to standard of care multi breath-hold cine imaging and was acquired in a fraction of the time without the need for breath-holding. If applied to clinical practice, this sequence can significantly reduce scanning time and facilitate CMR scanning in those patients who are unable to breath-hold." @default.
• W2949820005 created "2019-06-27" @default.
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• W2949820005 date "2019-09-01" @default.
• W2949820005 modified "2023-10-18" @default.
• W2949820005 title "Evaluating a novel free-breathing accelerated cardiac MRI cine sequence in patients with cardiomyopathy" @default.
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• W2949820005 doi "https://doi.org/10.1016/j.mri.2019.06.008" @default.
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