The Use of Set Theory and Cluster Analysis to Investigate the Constraint Problem in Factor Analysis in Dynamic Structures (FADS)
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In recent years factor analysis has played an increasingly important role in the analysis of nuclear medicine dynamic studies. Schmidlin (1979) demonstrated how the technique could be applied to a time sequence of images where each pixel gives rise to a dynamic curve (sometimes called a dixel). The premise is made that each dixel may be approximated by a linear combination of a few components. These are chosen in such a way that, for a given number of components, the least squares error of the approximation to the population of dixels is a minimum.
KeywordsLarge Aneurysm Factor Image Orthogonal Factor Trivial Factor Cardiac Study
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