Table 1.

Acquisition parameters for conventional breath-hold low-resolution LGE (LR-LGE) and proposed free-breathing high-resolution LGE (HR-LGE).

	LR-LGE	HR-LGE
Repetition time, ms	3.9	5.2
Echo time, ms	1.7	2.5
Flip angle, degrees	10	19
Field of view, mm	360 × 290 × 101	360 × 360 × 120
Acquired resolution, mm	2.0 × 1.5 × 7.4	1.25 × 1.25 × 1.25
Reconstructed resolution, mm	1.5 × 1.5 × 4.0	0.63 × 0.63 × 0.63
Number of slices, range	11–16	96–160
Phase oversampling, %	15	20
Slice oversampling, %	0	16.7
Asymmetric echo	Yes	Yes
Acquisition window, ms	236	156
Average number of k-space lines per heartbeat	60	30
Inversion time, ms	210–300	270–350
Trajectory & Acceleration	Cartesian GRAPPA x2	Cartesian variable density x3.8
Trigger pulse, RR interval	1	1
Bandwidth, Hz/pixel	360	255
Breath-hold	Yes	No