Keywords:
Cardiac, Echocardiography, MR, Comparative studies, Diagnostic procedure, Ischaemia / Infarction
Authors:
M. T. Cannizzaro, E. Chiodi, B. Malta, C. Montalto, M. Natali, Z. Ferrante, A. fiorencis, M. Giganti, G. Benea; Ferrara/IT
Methods and Materials
We studied 13 patients with history of ischemic myocardial heart failure (HF).
Selection criteria were: execution of cardiac MR after 6 months from HF; within 1 week of cardio MR,
execution of STE.
Patients without evidence of transmural scar were excluded from the examination with cardio MR.
Cardio MR images were analyzed using Segment software; coloured bull's eye maps were generated to identify distribution of myocardial scar.
These maps had to isolate area of transmural scar,
defined as having >=80% of thickness of entire myocardial wall.
Transmural scar area was calculated and expressed as percentage of total endocardial area.
STE analysis was performed on 2 dimensional cineloop of 3 standard apical sections ofLV; for each patient a coloured bull's eye map of longitudinal strain was obtained,
in which it was calculated transmural scar area.
Bull's eye obtained using the 2 techniques were initially overlapping to check correlation of site of transmural ischemic scar; percentage areas obtained were compared using linear regression analysis and Bland-Altman.