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An automated labeling system for subdividing the human cerebral cortex on MRI scans into gyral based regions of interest.

Abstract：

:In this study, we have assessed the validity and reliability of an automated labeling system that we have developed for subdividing the human cerebral cortex on magnetic resonance images into gyral based regions of interest (ROIs). Using a dataset of 40 MRI scans we manually identified 34 cortical ROIs in each of the individual hemispheres. This information was then encoded in the form of an atlas that was utilized to automatically label ROIs. To examine the validity, as well as the intra- and inter-rater reliability of the automated system, we used both intraclass correlation coefficients (ICC), and a new method known as mean distance maps, to assess the degree of mismatch between the manual and the automated sets of ROIs. When compared with the manual ROIs, the automated ROIs were highly accurate, with an average ICC of 0.835 across all of the ROIs, and a mean distance error of less than 1 mm. Intra- and inter-rater comparisons yielded little to no difference between the sets of ROIs. These findings suggest that the automated method we have developed for subdividing the human cerebral cortex into standard gyral-based neuroanatomical regions is both anatomically valid and reliable. This method may be useful for both morphometric and functional studies of the cerebral cortex as well as for clinical investigations aimed at tracking the evolution of disease-induced changes over time, including clinical trials in which MRI-based measures are used to examine response to treatment.

journal_name

Neuroimage

journal_title

NeuroImage

authors

Desikan RS,Ségonne F,Fischl B,Quinn BT,Dickerson BC,Blacker D,Buckner RL,Dale AM,Maguire RP,Hyman BT,Albert MS,Killiany RJ

doi

10.1016/j.neuroimage.2006.01.021

keywords:

subject

Has Abstract

pub_date

2006-07-01 00:00:00

pages

968-80

issue

3

eissn

1053-8119

issn

1095-9572

pii

S1053-8119(06)00043-7

journal_volume

31

pub_type

杂志文章

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