A 72-channel receive array coil allows whole-heart cine MRI in two breath holds
Posted on 2022-11-01 - 08:18
Abstract Background A new 72-channel receive array coil and sensitivity encoding, compressed (C-SENSE) and noncompressed (SENSE), were investigated to decrease the number of breath-holds (BHs) for cardiac magnetic resonance (CMR). Methods Three-T CMRs were performed using the 72-channel coil with SENSE-2/4/6 and C-SENSE-2/4/6 accelerated short-axis cine two-dimensional balanced steady-state free precession sequences. A 16-channel coil with SENSE-2 served as reference. Ten healthy subjects were included. BH-time was kept under 15 s. Data were compared in terms of image quality, biventricular function, number of BHs, and scan times. Results BHs decreased from 7 with C-SENSE-2 (scan time 70 s, 2 slices/BH) to 3 with C-SENSE-4 (scan time 42 s, 4–5 slices/BH) and 2 with C-SENSE-6 (scan time 28 s, 7 slices/BH). Compared to reference, image sharpness was similar for SENSE-2/4/6, slightly inferior for C-SENSE-2/4/6. Blood-to-myocardium contrast was unaffected. C-SENSE-4/6 was given lower qualitative median scores, but images were considered diagnostically adequate to excellent, with C-SENSE-6 suboptimal. Biventricular end-diastolic (EDV), end-systolic (ESV) and stroke volumes, ejection fractions (EF), cardiac outputs, and left ventricle (LV)-mass were similar for SENSE-2/4/6 with no systematic bias and clinically appropriate limits of agreements. C-SENSE slightly underestimated LV-EDV (-6.38 ± 6.0 mL, p < 0.047), LV-ESV (-7.94 ± 6.0 mL, p < 0.030) and overestimated LV-EF (3.16 ± 3.10%; p < 0.047) with C-SENSE-4. Bland-Altman analyses revealed minor systematic biases in these variables with C-SENSE-2/4/6 and for LV-mass with C-SENSE-6. Conclusions Using the 72-channel coil, short-axis CMR for quantifying biventricular function was feasible in two BHs where SENSE slightly outperformed C-SENSE.
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Klarenberg, Hugo; Gosselink, Mark; Coolen, Bram F.; Leiner, Tim; Nederveen, Aart J.; Bakermans, Adrianus J.; et al. (2022). A 72-channel receive array coil allows whole-heart cine MRI in two breath holds. figshare. Collection. https://doi.org/10.6084/m9.figshare.c.6275765.v1
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AUTHORS (10)
HK
Hugo Klarenberg
MG
Mark Gosselink
BC
Bram F. Coolen
TL
Tim Leiner
AN
Aart J. Nederveen
AB
Adrianus J. Bakermans
HL
Hildo J. Lamb
SB
S. Matthijs Boekholdt
MF
Martijn Froeling
GS
Gustav J. Strijkers