### Abstract

The measurement of left ventricular function will be greatly enhanced when the Three-dimensional (3-D) shape of the ventricle can be closely assessed by biplane angiocardiograms taken from two perpendicular X-ray camera sets. The ventricle shape at a given time may 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; it works well as long as a certain regularity condition (a much relaxed assumption) is satisfied. In this correspondence, we extend the notion to the equal-divisor surface of a 3-D object with two orthogonal projections, and develop a method of direct 3-D reconstruction of the left ventricle instead of piling up the parallel reconstructed two-dimensional (2-D) cross sections.

Original language | English |
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Pages (from-to) | 1666-1671 |

Number of pages | 6 |

Journal | IEEE Transactions on Systems, Man and Cybernetics |

Volume | 19 |

Issue number | 6 |

DOIs | |

Publication status | Published - 1989 Jan 1 |

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### All Science Journal Classification (ASJC) codes

- Engineering(all)

### Cite this

*IEEE Transactions on Systems, Man and Cybernetics*,

*19*(6), 1666-1671. https://doi.org/10.1109/21.44083

}

*IEEE Transactions on Systems, Man and Cybernetics*, vol. 19, no. 6, pp. 1666-1671. https://doi.org/10.1109/21.44083

**Three-dimensional Reconstruction of Ventricle From Biplane Angiocardiograms Via Equal-Divisor Surface.** / Sun, Yung-Nien; Li, C. C.; Krishnaiah, P. R.; Reddy, P. S.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Three-dimensional Reconstruction of Ventricle From Biplane Angiocardiograms Via Equal-Divisor Surface

AU - Sun, Yung-Nien

AU - Li, C. C.

AU - Krishnaiah, P. R.

AU - Reddy, P. S.

PY - 1989/1/1

Y1 - 1989/1/1

N2 - The measurement of left ventricular function will be greatly enhanced when the Three-dimensional (3-D) shape of the ventricle can be closely assessed by biplane angiocardiograms taken from two perpendicular X-ray camera sets. The ventricle shape at a given time may 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; it works well as long as a certain regularity condition (a much relaxed assumption) is satisfied. In this correspondence, we extend the notion to the equal-divisor surface of a 3-D object with two orthogonal projections, and develop a method of direct 3-D reconstruction of the left ventricle instead of piling up the parallel reconstructed two-dimensional (2-D) cross sections.

AB - The measurement of left ventricular function will be greatly enhanced when the Three-dimensional (3-D) shape of the ventricle can be closely assessed by biplane angiocardiograms taken from two perpendicular X-ray camera sets. The ventricle shape at a given time may 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; it works well as long as a certain regularity condition (a much relaxed assumption) is satisfied. In this correspondence, we extend the notion to the equal-divisor surface of a 3-D object with two orthogonal projections, and develop a method of direct 3-D reconstruction of the left ventricle instead of piling up the parallel reconstructed two-dimensional (2-D) cross sections.

UR - http://www.scopus.com/inward/record.url?scp=0024770718&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024770718&partnerID=8YFLogxK

U2 - 10.1109/21.44083

DO - 10.1109/21.44083

M3 - Article

VL - 19

SP - 1666

EP - 1671

JO - IEEE Transactions on Systems, Man and Cybernetics

JF - IEEE Transactions on Systems, Man and Cybernetics

SN - 0018-9472

IS - 6

ER -