Key result
Novel 3D ultrasound strain analysis using snakes and speckle tracking proves feasible for characterizing cardiac patients.
Why the study?
A method for strain analysis of cardiac tissues from 3D ultrasound images is needed to characterize healthy and pathological heart conditions.
Can strain analysis of cardiac tissues from 3D ultrasound images using snakes and speckle tracking characterize healthy subjects and patients with heart pathologies?
Can strain analysis of cardiac tissues from 3D ultrasound images using snakes and speckle tracking characterize healthy subjects and patients with heart pathologies?
A novel method combining iterative snake algorithms and speckle tracking on 3D ultrasound images demonstrates feasibility in characterizing cardiac strain in both healthy and pathological hearts.
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May advance 3D ultrasound strain methods; leaves open prospective validation before clinical adoption.
In this paper, we are presenting a method for achieving strain analysis of cardiac tissues from 3D ultrasound images. First of all, the left ventricle was segmented by an iterative snake algorithm which exploits the gradient vector flow field estimated from the 3D images. Once the ventricle was segmented, a set of points located on the external surface of the ventricle was selected. The movement of all these points along the entire cardiac cycle was calculated by using speckle tracking techniques. The strain of all the segments connecting two of the considered points was computed, together with the rotation of the points along the long axis of the ventricle. The method was tested on images acquired from 10 subjects: three with heart pathologies, five healthy subjects, and two patients with mild hypertrophy. Preliminary results showed the feasibility of characterizing healthy subjects and patients with well-defined heart pathologies by using the outcomes achieved with the strain analysis.
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Lanconelli et al. (2015) studied Heart pathologies and mild hypertrophy (n=10). 3D ultrasound strain analysis using snakes and speckle tracking was evaluated on Feasibility of characterizing healthy subjects and patients with heart pathologies. A novel method for strain analysis of cardiac tissues from 3D ultrasound images using snakes and speckle tracking demonstrated feasibility in characterizing healthy subjects and cardiac patients.
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