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Type: Artigo de periódico
Title: Effects of method and MRI slice thickness on entorhinal cortex volumetry
Author: Bonilha, L
Kobayashi, E
Cendes, F
Li, LM
Abstract: We assessed the effect of the method of analysis and the MRI slice thickness on entorhinal cortex volumetry. A Tl gradient echo 3D volumetric acquisition was reformatted into different slice thickness and analyzed by edge-tracing. We performed two different forms of analysis of images with 3 mm slice thickness: edge-tracing and pixel by pixel. There was difference among the volumes obtained from different slice thickness (p < 0.001), and also difference between the two different methods of analysis (p < 0.05). The use of thick slices is time saving, but volumes are linearly increased; different methods of segmentation also yields different values. The form of volumetric analysis of the entorhinal cortex should be evaluated in advance to prevent false estimates in longitudinal studies.
Subject: entorhinal cortex
Country: EUA
Editor: Lippincott Williams & Wilkins
Citation: Neuroreport. Lippincott Williams & Wilkins, v. 14, n. 10, n. 1291, n. 1295, 2003.
Rights: fechado
Identifier DOI: 10.1097/01.wnr.0000077545.91466.73
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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