Native contrast visualization and tissue characterization of myocardial radiofrequency ablation and acetic acid chemoablation lesions at 0.55 T

Table 2 Typical CMR imaging parameters for ex vivo scans

Ex vivo scan	Imaging technique	Acquired / reconstructed spatial resolution (mm³⁾	TR / TE (ms)	Flip angle (deg)	Receiver bandwidth (Hz/pixel)	Acquisition time (h)	Acceleration factor (GRAPPA)	Other parameters
T1-W 3D -Mid Res	SPGR	0.5 isotropic / 0.5 isotropic	25.0 / 5.23	40	130	~ 2	None	6 Averages
T1-W 3D -High Res	SPGR	0.25 × 0.25 × 0.5 / 0. 25 Isotropic	25.0 / 5.23	40	130	10–12	None	24–30 Averages
DESPOT T1 Mapping	SPGR	1.0 isotropic / 1.0 isotropic	30 / 4.72	11°–56°	130	1.35	None	10 Flip angles 5°steps

SPGR RF-spoiled gradient echo, DESPOT drive equilibrium single pulse observation of T1, GRAPPA generalized autocalibrating partially parallel imaging

ISSN: 1532-429X