Literature DB >> 6714250

Fitting of radioactivity data to exponential functions by weighted least squares analysis.

P Dimitriou, J Giamouris, A Kasfiki, T Karpathios, S E Antipas.   

Abstract

The weighted least squares analysis ( WLS ) was compared with the commonly used least squares analysis in the fitting of radioactivity data to an exponential equation. The results show that the two methods present the same accuracy in estimating the parameters of exponential functions, while the WLS analysis offers a much higher reliability, permitting a considerable shortening of the sample counting time.

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Year:  1984        PMID: 6714250     DOI: 10.1007/bf00251470

Source DB:  PubMed          Journal:  Eur J Nucl Med        ISSN: 0340-6997


  3 in total

1.  Red-cell lifetimes calculated from 51Cr red-cell survival data.

Authors:  J C Widman; E R Powsner
Journal:  Med Phys       Date:  1974 Mar-Apr       Impact factor: 4.071

2.  Mathematical analysis of 51Cr-labelled red cell survival curves in congenital haemolytic anaemias.

Authors:  A G Kasfiki; S E Antipas; P A Dimitriou; F A Gritzali; K G Melissinos
Journal:  Eur J Nucl Med       Date:  1982

3.  Effective RES blood flow changes in children with homozygous beta-thalassemia in relation to blood transfusion.

Authors:  T H Karpathios; P Dimitriou; J Giamouris; P Nicolaidou; S E Antipas; N Matsaniotis
Journal:  Eur J Nucl Med       Date:  1983
  3 in total

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