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A new vertex-finding algorithm for the oblique rotation step in factor analysis

M Van Daele, J Joosten, P Devos, A Vandecruys, J L Willems and M De Roo

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The use of an oblique transformation to obtain physiological factors from a factor analysis of dynamic scintigraphic studies was suggested ten years ago. The technique uses a vertex-seeking routine to enable these factors and their contribution images to be formed. This paper investigates a new vertex-finding algorithm, based on an optimization of a function of the vertices. The algorithm also converges in the cases where the previous algorithm of Barber and Cavailloles diverges.


PACS

87.57.U- Nuclear medicine imaging

02.60.-x Numerical approximation and analysis

02.50.-r Probability theory, stochastic processes, and statistics

MSC

65F10 Iterative methods for linear systems (See also 65N22)

92C55 Biomedical imaging and signal processing (See also 44A12, 65R10)

Subjects

Computational physics

Medical physics

Dates

Issue 1 (January 1991)



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