Comparison of Left Atrial Area Marked Ablated in Electroanatomical Maps with Scar in MRI. Parmar, B., Jarrett, T., Burgon, N., Kholmovski, E., Akoum, N., Hu, N., MacLeod, R., Marrouche, N., & Ranjan, R. j-JCE, 25(5):457–463, 2014.
bibtex   
@Article{RSM:Par2014,
  author =       "B.R. Parmar and T.R. Jarrett and N.S. Burgon and E.G.
                 Kholmovski and N.W. Akoum and N. Hu and R.S. MacLeod and
                 N.F. Marrouche and R. Ranjan",
  title =        "Comparison of Left Atrial Area Marked Ablated in
                 Electroanatomical Maps with Scar in {MRI}.",
  journal =      j-JCE,
  year =         "2014",
  volume =       "25",
  number =       "5",
  pages =        "457--463",
  robnote =      "We hypothesized that, in atrial
                 fibrillation (AF) ablation, EAM overestimates scar
                 formation in the left atrium (LA) when compared to the
                 scar seen on late-gadolinium enhancement magnetic
                 resonance imaging (LGE-MRI). Of the
                 235 patients who underwent initial ablation for AF at our
                 institution between August 2011 and December 2012, we
                 retrospectively identified 70 patients who had
                 preprocedural magnetic resonance angiography merged with
                 LA anatomy in EAM software and had a 3-month postablation
                 LGE-MRI for assessment of scar. Ablated area was marked
                 intraprocedurally using EAM software and quantified
                 retrospectively. Scarred area was quantified in 3-month
                 postablation LGE-MRI. The mean ablated area in EAM was
                 30.5 +/- 7.5\% of the LA endocardial surface and the mean
                 scarred area in LGE-MRI was 13.9 +/- 5.9\% (P < 0.001).
                 This significant difference in the ablated area marked in
                 the EAM and scar area in the LGE-MRI was present for each
                 of the 3 independent operators. Complete pulmonary vein
                 (PV) encirclement representing electrical isolation was
                 observed in 87.8\% of the PVs in EAM as compared to only
                 37.4\% in LGE-MRI (P < 0.001). CONCLUSIONS: In AF
                 ablation, EAM significantly overestimates the resultant
                 scar as assessed with a follow-up LGE-MRI.",
  bibdate =      "Sat Feb 15 07:04:30 2014",
  pmcid =        "PMC4090328",
}

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