Background—A high degree of noncompacted (trabeculated) myocardium in relationship to
compact myocardium (trabeculated to compact myocardium [T/M] ratio> 2.3) has been
associated with a diagnosis of left ventricular noncompaction (LVNC). The purpose of this
study was to determine the normal range of the T/M ratio in a large population-based study
and to examine the relationship to demographic and clinical parameters. Methods and
Results—The thickness of trabeculation and the compact myocardium were measured in 8 …

Background—A high degree of non-compacted (trabeculated) myocardium in relationship to
compact myocardium (T/M ratio> 2.3) has been associated with a diagnosis of left ventricular
non-compaction (LVNC). The purpose of this study was to determine the normal range of the
T/M ratio in a large population-based study and to examine the relationship to demographic
and clinical parameters. Methods and Results—The thickness of trabeculation and the
compact myocardium were measured in eight LV regions on long axis cardiac magnetic …