Figure 1
The two rows show ablations in two pigs. The first two columns show T2maps and M0maps fitted from T2-mapping MEFSE sequence. The next two show IR-SSFP CINE images for two phases with different inversion times and the last one shows gross pathology of the lesion. The T2maps show a large area of diffuse T2 enhancement in and around the ablation region possibly due to edema. The M0 maps closely correspond in size and location to the ablation seen in gross pathology. Note that the M0map is T1-weighted. IRSSFP shows two different heart-phases from CINE reconstruction. The first phase is acquired in the first-RR with a short inversion time (TI=116 ms) and therefore has bright blood while the second phase is acquired later in the second-RR (TI=616ms) when the blood signal is nulled. Signal enhancement around the ablation region in the first phase corresponds to edema and in the second phase to the actual border.