Validity of Normative Volumetric Estimates from Open Access Software in Amnestic Mild Cognitive Impairment

被引:1
作者
Fountain-Zaragoza, S. [1 ]
Horn, O. [2 ]
Thorn, K. E. [2 ]
Kraal, A. Z. [3 ,4 ]
Benitez, Andreana [2 ,5 ]
机构
[1] Med Univ South Carolina, Dept Hlth Sci & Res, Charleston, SC USA
[2] Med Univ South Carolina, Dept Neurol, Charleston, SC USA
[3] Columbia Univ, Dept Neurol, Irving Med Ctr, New York, NY USA
[4] Columbia Univ, Taub Inst Res Alzheimers Dis & Aging Brain, Irving Med Ctr, New York, NY USA
[5] 96 Jonathan Lucas St, MSC 606, Charleston, SC 29425 USA
来源
JPAD-JOURNAL OF PREVENTION OF ALZHEIMERS DISEASE | 2023年 / 10卷 / 02期
关键词
Neurodegeneration; mild cognitive impairment; memory; HEALTHY OLDER-ADULTS; ALZHEIMERS-DISEASE; NEUROPSYCHOLOGICAL CRITERIA; MEMORY; PROGRESSION; DEMENTIA; ATROPHY; MCI; POPULATION; PREDICTION;
D O I
10.14283/jpad.2023.19
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
BackgroundNeurodegeneration in Alzheimer's disease (AD) is typically assessed through brain MRI. Although proprietary software can provide normative estimates of regional atrophy, such tools can be cost-prohibitive for research settings. Free software for generating normative estimates has recently been released but has yet to be validated in the context of amnestic mild cognitive impairment (aMCI).ObjectivesDetermine whether normative morphometric estimates generated from open-source software replicate established patterns of neurodegeneration in aMCI, and whether these metrics correlate with episodic memory performance.DesignObservational study of brain MRI and cognition in aging and aMCI with two identical study visits occurring approximately 1.2 years apart.SettingParticipants were recruited from the local community and outpatient clinical settings.ParticipantsAdults ages 60-85 with aMCI (n = 25) and cognitively normal controls (CN; n = 74). A subset returned for follow-up (aMCI n = 11, CN n = 52).MeasurementsParticipants completed brain MRI and two neuropsychological tests of verbal episodic memory. FreeSurfer v6.0 and Normative Morphometry Image Statistics were used to generate normative morphometric estimates for AD-relevant regions (hippocampus, parahippocampus, entorhinal cortex, amygdala) and control regions (cuneus, lingual gyrus, pericalcarine gyrus), adjusting for age, sex, head size, scanner manufacturer, and field strength. We tested for baseline group differences in ROI volumes and memory and assessed their within-group associations. We also evaluated changes in ROI volumes over time and tested whether these changes corresponded to declines in memory.ResultsAt baseline, the aMCI group exhibited poorer memory and smaller volumes in AD-relevant regions than the CN group. There were no group differences in control region volumes. Memory was associated with volumes in AD-relevant regions in the aMCI group only. The aMCI group exhibited greater declines than the CN group in hippocampal volume (17% vs. 8% annual decline) and entorhinal volume (54% vs. 5% annual decline). Decrease in hippocampal volume was marginally associated with decline in memory for the aMCI group.ConclusionsNormative morphometric values generated from freely available software demonstrated expected patterns of group differences in AD-related volumes and associations with memory. Significant effects were localized to AD-relevant brain regions and only occurred in the aMCI group. These findings support the validity of these free tools as reliable and cost-effective alternatives to proprietary software for use in research settings.
引用
收藏
页码:236 / 243
页数:8
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