Isabel P Almeida

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PURPOSE To assess image quality and to quantify the accuracy of relative electron densities (ρe ) and effective atomic numbers (Zeff ) for three dual-energy computed tomography (DECT) scanners: a novel single-source split-filter (i.e., twin-beam) and two dual-source scanners. METHODS Measurements were made with a second generation dual-source scanner at(More)
OBJECTIVE The aim of this work was to investigate whether quantitative dual-energy CT (DECT) imaging is feasible for small animal irradiators with an integrated cone-beam CT (CBCT) system. METHODS The optimal imaging protocols were determined by analyzing different energy combinations and dose levels. The influence of beam hardening effects and the(More)
Studies on Persea americana have been addressed in different ways with biochemical and molecular techniques. Microsatellites are able to detect multiple alleles for particular loci and are therefore a useful tool to study genealogical relationships, population structures and genetic mapping. Ninety-six samples from 49 cultivars including three horticultural(More)
Avocado has been characterized using morphological and molecular traits, leading to establish three different horticultural groups: Mexican, Guatemalan, and West Indian. Microsatellites have allowed the identification of hybridization and/or backcross processes which have led to crop improvement. Reticulated phylogenies from evolutionary distances among(More)
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