Key result
A new method using the CenterSurface model allows for 3-D reconstruction of the left ventricle from random slice orientations to compute wall motion and thickness.
The CenterSurface model provides a novel method for 3-D reconstruction of the left ventricle from random slice orientations to compute regional wall motion and thickness.
May enable flexible LV analysis from nonstandard imaging; leaves open prospective validation before clinical use.
Reconstruction of heart chambers from tomographic images has traditionally been done from either parallel or fixed position rotational scans. We introduce a method of reconstruction from random slice orientations, using labeled landmark features to guide fitting to a labeled predesigned surface-generating mesh. This method is applied specifically to ultrasound sector scanning, but is applicable to any tomographic imaging technique. Given surface descriptions of the left ventricle (LV) endocardium and epicardium at end diastole (ED) and end systole (ES) (or other time points), LV wall motion can be computed by matching the ED and ES surface features. Wall thickness at ED and ES is computed using the CenterSurface method. A new method of computing the CenterSurface is described.
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Bolson et al. (2002) studied Left ventricle reconstruction. CenterSurface model for 3-D reconstruction vs. Traditional parallel or fixed position rotational scans was evaluated on LV wall motion and wall thickness computation. A new method using the CenterSurface model allows for 3-D reconstruction of the left ventricle from random slice orientations to compute wall motion and thickness.
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