20 May 1999 Volumetric motion tracking of the left ventricle of the heart from tagged MRI by a B-spline solid model
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Accurate delineation of the volumetric motion of Left- Ventricle (LV) of the heart from magnetic resonance imaging is an important area of research. We have built a system that takes tagged short-axis (SA) and long-axis (LA) image sequences as input, fits a 3D B-spline solid model to the LV of the heart by matching 3 sequences of solid knot planes to 3 sequences of tag planes, and volumetrically tracks the LV deformations. The formulation described in this article is more efficient than our previously proposed B-spline solid work. The advantage of the B-spline solid is that each LV myocardial point is uniquely indexed by a solid point, simplifying displacement reconstruction. The output of the system is a 3D solid that accurately captures the volumetric LV motion and provides a 3D motion field. The concept of registering and fitting the solid's knot planes to the LV tag planes is novel. In order to outline the myocardium from the solid, two B-spline surface models are used to fit the endocardial and epicardial walls. The generated motion fields follow the ground-truth motion fields closely.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jiantao Huang, Amir A. Amini, "Volumetric motion tracking of the left ventricle of the heart from tagged MRI by a B-spline solid model", Proc. SPIE 3660, Medical Imaging 1999: Physiology and Function from Multidimensional Images, (20 May 1999); doi: 10.1117/12.349624; https://doi.org/10.1117/12.349624

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