Reliability Of Respiratory-Triggered Two-Dimensional Cine K-Adaptive-T-Autocalibrating Reconstruction For Cartesian Sampling For The Assessment Of Biventricular Volume And Function In Patients With Repaired Tetralogy Of Fallot

Objective: To compare left ventricular (LV) and right ventricular (RV) volume, function, and image quality of a respiratory-triggered two-dimensional (2D)-cine k-adaptive-t-autocalibrating reconstruction for Cartesian sampling (2D kat-ARC) with those of the standard reference, namely, breath-hold 2D balanced steady-state free precession (2D SSFP), in patients with repaired tetralogy of Fallot (TOF).Methods: 30 patients (14 males, mean age 32.2 +/- 13.9 years) underwent cardiac magnetic resonance, and 2D kat-ARC and 2D SSFP images were acquired on short-axis view. Biventricular end-diastolic volume (EDV) and end-systolic volume (ESV), stroke volume (SV), ejection fraction (EF), and LV mass (LVM) were analysed.Results: The 2D kat-ARC had significantly shorter scan time (35.2 +/- 9.1 s vs 80.4 +/- 16.7 s; p < 0.0001). Despite an analysis of image quality showed significant impairment using 2D kat-ARC compared to 2D SSFP cine (p < 0.0001), the two sequences demonstrated no significant difference in terms of biventricular EDV, LVESV, LVSV, LVEF, and LVM. However, the RVESV was overestimated for 2D kat-ARC compared with that for 2D SSFP (73.8 +/- 43.2 ml vs 70.3 +/- 44.5 ml, p = 0.0002) and the RVSV and RVEF were underestimated (RVSV = 46.2 +/- 20.5 ml vs 49.4 +/- 20.4 ml, p = 0.0024; RVEF = 40.2 +/- 12.7% vs. 43.5 +/- 14.0%, p = 0.0002).Conclusion: Respiratory-triggered 2D kat-ARC cine is a reliable technique that could be used in the evaluation of LV volumes and function.Advances in knowledge: 2D cine kat-ARC is a reliable technique for the assessment LV volume and function in patients with repaired TOF.