Application of the Fourier Descriptors Method for Plane Closed Curves to the Analysis of Sequences of Left Ventricular Contours in Cardiac Radionuclide Angiographies



A general solution to the problem of automatic determination of cardiac cavities contours has not yet been found. As an obvious consequence, the quantitative characterization and exploitation of the contours has not been proposed. The Fourier Descriptors (FDs) method for plane closed curves offers original solutions to this problem. Especially it allows the quantitative characterization and reconstruction of the shape of the successive contours of the acquisition sequence. This method initiates a new approach to problems such as the automatic detection of abnormal contours, the assessment of the isotropy of the contraction and the analysis of the temporal evolution of the shape of the cardiac cavities. This paper presents the principle of the method, and describes the computational procedure for extracting the successive left ventricular contours from the acquisition sequence, and their corresponding FDs. The respective influences of the sampling. noise, the reconstruction bandwidth, and the related smoothing effects are discussed. The above mentionned topical applications to cardiac analysis are illustrated.


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Copyright information

© Martinus Nijhoff Publishers, Dordrecht 1986

Authors and Affiliations

  1. 1.Laboratoire d’Optique C.N.R.S.Université de BesançonFrance
  2. 2.Service de BiophysiqueUniversité de BesançonFrance
  3. 3.Service de CardiologieUniversité de BesançonFrance

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