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Comparison of automated and manual MRI volumetry of hippocampus in normal aging and dementia

Comparison of automated and manual MRI volumetry of hippocampus in normal aging and dementia Purpose To determine whether automatic and manual measurements of hippocampal volume differences on MRI between normal aging, cognitive impairment (CI), and Alzheimer's disease (AD) yield similar results. Materials and Methods Reliability was determined for an automatic and a manual method on nine volunteers (22–83 years old) who underwent MRI twice in 1 day. Hippocampal volumes of 20 cognitively normal subjects (mean age 74.0 ± 6.2 years) and age‐matched patients (20 CI and 20 AD) were compared. Results The intraclass correlation for automatic calculations of hippocampal volume was 0.94; for manual tracing it was 0.99. Volume differences between cognitively normal, CI, and AD subjects from the automatic and manual methods were similar. Conclusion Because the automatic calculations were faster and less susceptible to rater bias than manual tracing, this automated method is expected to be very useful for analyzing hippocampal changes in studies of aging and dementia. J. Magn. Reson. Imaging 2002;16:305–310. Published 2002 Wiley‐Liss, Inc. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Magnetic Resonance Imaging Wiley

Comparison of automated and manual MRI volumetry of hippocampus in normal aging and dementia

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References (46)

Publisher
Wiley
Copyright
Copyright © 2002 Wiley Subscription Services
ISSN
1053-1807
eISSN
1522-2586
DOI
10.1002/jmri.10163
pmid
12205587
Publisher site
See Article on Publisher Site

Abstract

Purpose To determine whether automatic and manual measurements of hippocampal volume differences on MRI between normal aging, cognitive impairment (CI), and Alzheimer's disease (AD) yield similar results. Materials and Methods Reliability was determined for an automatic and a manual method on nine volunteers (22–83 years old) who underwent MRI twice in 1 day. Hippocampal volumes of 20 cognitively normal subjects (mean age 74.0 ± 6.2 years) and age‐matched patients (20 CI and 20 AD) were compared. Results The intraclass correlation for automatic calculations of hippocampal volume was 0.94; for manual tracing it was 0.99. Volume differences between cognitively normal, CI, and AD subjects from the automatic and manual methods were similar. Conclusion Because the automatic calculations were faster and less susceptible to rater bias than manual tracing, this automated method is expected to be very useful for analyzing hippocampal changes in studies of aging and dementia. J. Magn. Reson. Imaging 2002;16:305–310. Published 2002 Wiley‐Liss, Inc.

Journal

Journal of Magnetic Resonance ImagingWiley

Published: Jan 1, 2002

Keywords: ; ; ; ;

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