El-Sayed H. Ibrahim1, Scott Swanson1, Jadranka Stojanovska1, Claire Duvernoy1, and Rodica Pop-Busui1
MRI tagging is a
valuable method for evaluating regional heart function. This study compares the
harmonic-phase (HARP) and sine-wave modeling (SinMod) tagging analysis
techniques for evaluating myocardial strain and torsion in healthy controls and
type-1-diabetes patients. All SinMod measurements were significantly larger
than those by HARP. Nevertheless, there existed consistency in the measurements
by each technique, as seen by the good correlation between the HARP and SinMod
measurements in both normals and patients, except for apical strain (patients
and controls) and mid-ventricular strain in patients. The inter-observer agreement
was better in SinMod than in HARP for both torsion and strain.
