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A novel center point trajectory model for cardiac wall motion abnormality assessment compared with echocardiography strain
© Song et al; licensee BioMed Central Ltd. 2010
Published: 21 January 2010
Proper identification and quantification of left ventricular wall motion is essential for clinical management of many patients with cardiac disease .
A novel method using left ventricular center point trajectory (CPT) analysis to measure myocardial wall motion is proposed. Echocardiography strain analysis is used to validate the concept.
The method entails the tracking of the left ventricular center point of the left ventricle on 2D SSFP images over time. A polar coordinate map indicating amplitude and angle parameters provides a quantitative way to describe systolic (red) and diastolic (blue) wall motion. Transthoracic echocardiography using 2D strain maps were used to validate the findings from CMR and CPT analysis. Three patients with myocardial infarction (3 Male, 67 ± 4 y/o, EF 54% ± 14%) and one healthy volunteer (1 Female, 51 y/o, EF 63%) were enrolled in this IRB approved study. On the echocardiography peak systolic strain map, the smaller the magnitude absolute value, the less the echocardiographic strain measurement.
A center point tracking method can provide a quantitative tool for wall motion assessment of conventional 2D cine MR images. This novel wall motion assessment tool correlates well with 2D echocardiographic strain maps as the reference standard.
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This article is published under license to BioMed Central Ltd.