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Three-dimensional reconstruction of ventricle from biplane angiocardiograms via equal-divisor surface

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4 Author(s)
Sun, Y.N. ; Inst. of Inf. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Li, C.C. ; Krishnaiah, P. ; Reddy, P.S.

The measurement of left ventricular function is greatly enhanced when the three-dimensional shape of the ventricle can be closely assessed by biplane angiocardiograms taken from two perpendicular X-ray camera sets. The ventricle shape can be reconstructed by dividing each of the two orthogonal projection images into corresponding slices, processing each pair of corresponding slices to form a binary cross-sectional image, and stacking up these parallel cross-sectional images. Existing methods of reconstructing cross sections often involve assumptions of elliptic shape or convex symmetry. Recently, a new approach was proposed to reconstruct each cross section by estimating an equal-divisor curve instead of estimating the boundary directly. The approach works well as long as a certain regularity condition (a much relaxed assumption) is satisfied. The notion is extended to the equal-divisor surface of a three-dimensional object with two orthogonal projections. A method for the direct three-dimensional reconstruction of the left ventricle (instead of piling up the parallel reconstructed two-dimensional cross sections) is given

Published in:

Systems, Man and Cybernetics, IEEE Transactions on  (Volume:19 ,  Issue: 6 )

Date of Publication:

Nov/Dec 1989

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