Left Ventricular Motion Analysis of 4-D SPECT Imaging Using Normal Direction Constraint

I-Cheng CHANG, Chung-Lin HUANG, Chen-Chang LEIN, Liang-Chih WU, Shin-Hwa YEH

Summary :

For medical imaging, non-rigid motion analysis of the heart deformability is a nontrivial problem. This paper introduces a new method to analyze the gated SPECT (Single Photon Emission Computed Tomography) imges for 3-D motion information of left ventricular. Our motion estimation method is based on a new concept called normal direction constraint" in that the normal of a surface patch of some deforming objects at certain time instant is constant. This paper consists of the following processes: contour extraction, slices interpolation, normal vector field generation, expanding process, motion estimation for producing a 2-D motion vector field, and deprojection for a 3-D motion vector field. In the experiments, we will demonstrate the accuracy of our method in analyzing the 3-D motion field of deforming object.

• Publication: IEICE TRANSACTIONS on Information Vol.E77-D No.11 pp.1262-1272
• Publication Date: 1994/11/25
• Type of Manuscript: Special Section PAPER (Special Issue on Computer Vision)

Authors

I-Cheng CHANG
Chung-Lin HUANG
Chen-Chang LEIN
Liang-Chih WU
Shin-Hwa YEH

Keyword

motion estimation,  normal direction constraint,  expanding process,  motion vector field,  Left Ventricular (LV)