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Table 1 Imaging parameters for patient studies

From: Improved dark blood imaging of the heart using radial balanced steady-state free precession

Pulse sequence Radial bSSFP Cartesian fast spin-echo
Spatial resolution 6 mm × 1.4–1.9 mm × 1.4–1.9 mm 8 mm × 1.4 mm × 1.4 mm
Field-of-view 225 mm–240 mm 340 mm
Parallel imaging None Ipat factor = 2
Sampling matrix 128–160 256
Flip angle for readout 60O 90O/180O
Echo time 1.4 ms T1-weighted: 29 ms
T2-weighted STIR: 47 ms
Echo train length/shot 95 ms T1-weighted: 70 ms
T2-weighted STIR: 108 ms
Echo spacing 2.7 ms T1-weighted: 5.8 ms
T2-weighted STIR: 7.2 ms
Sampling bandwidth 1002 Hz/pixel T1-weighted: 305 Hz/pixel
T2-weighted STIR: 235 Hz/pixel
Magnetization preparation Dual-inversion for dark blood Dual-inversion for dark blood
T2prep (T2prep time = 60, 90 ms) for T2-weighting T1-weighted: Chemical shift-selective RF for fat saturation; STIR: short-tau (TI = 170 ms) inversion
Chemical shift-selective RF for fat saturation
# of RR per trigger T1-weighted: 1 T1-weighted: 1
T2-weighted: 2 T2-weighted STIR: 2
Scan time/slice T1-weighted: 4 × RR T1-weighted: 9 (8 shots + 1 dummy rep) × RR
T2-weighted: 8 × RR T2-weighted STIR: 14 (13 shots + 1 dummy rep) × RR