✦ LIBER ✦

Estimation of the mean caliper: A new simple approach

✍ Scribed by Elmalek, Michelle ;Hammel, Ilan

Publisher: Wiley (John Wiley & Sons)
Year: 1988
Tongue: English
Weight: 483 KB
Volume: 8
Category: Article
ISSN: 0741-0581
DOI: 10.1002/jemt.1060080203

No coin nor oath required. For personal study only.

✦ Synopsis

Morphometric measurements are commonly carried out on structures the shape of which approximates that of a sphere. We calculated some stereological data of eosinophil granules by using digitized planimetry, performed on transmission electronmicrographs. By using a new approach for mean caliper (D) estimation and extrapolating an approximate granule axial ratio, we were able to calculate the granule density size. We deduced from a numerical analysis for various sphere sizes distributions from which an underestimation of not more than 4% may be contributed to D in most cases, assuming that the diameter coefficient of variation is less than 35%. The methodology we propose for mean ellipsoid caliper estimation seems to be useful in cases in which the disector method is not suitable.

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