Key result
A cylindrical B-spline deformable model tracked tag lines more accurately and faster than a previously proposed technique requiring manual contours in 8 human imaging studies.
A novel cylindrical B-spline deformable model enables faster and more accurate tag tracking and myocardium motion reconstruction from tagged MRI without requiring manual contours.
May accelerate automated tagged MRI analysis in research; leaves open clinical validation before routine use.
We present a method for combined tag tracking and myocardium motion reconstruction from planar tagged MR image data that does not require user-defined myocardial contours. The method uses a cylindrical B-spline deformable model which more closely matches the shape of left ventricle than a Cartesian B-spline model. Experimental results on eight human imaging studies indicate that our method can track tag lines more accurately and faster than a previously proposed technique, which used manually determined myocardial contours. Also, circumferential strains computed by our method compare well with strains computed from expert edited tag lines using other deformation models.
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Deng et al. (2005) studied Myocardium motion reconstruction (n=8). Cylindrical B-spline deformable model for tag tracking vs. Previously proposed technique using manually determined myocardial contours was evaluated on Tag line tracking accuracy, speed, and circumferential strains. A cylindrical B-spline deformable model tracked tag lines more accurately and faster than a previously proposed technique requiring manual contours in 8 human imaging studies.
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