한빛사논문
- 조회810
Sun Young Moon1,2, Hyungyou Park3, Won Lee3, Subin Lee3, Silvia Kyungjin Lho4, Minah Kim5,6, Ki Woong Kim2,3,6,7 and Jun Soo Kwon2,3,5,6
1Department of Public Health Service, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
2Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea.
3Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea.
4Research and Development Division, 40FY Inc., Seongnam, Republic of Korea.
5Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.
6Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.
7Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.
Corresponding author : Correspondence to Jun Soo Kwon.
Abstract
Although gray matter (GM) abnormalities are present from the early stages of psychosis, subtle/miniscule changes may not be detected by conventional volumetry. Texture analysis (TA), which permits quantification of the complex interrelationship between contrasts at the individual voxel level, may capture subtle GM changes with more sensitivity than does volume or cortical thickness (CTh). We performed three-dimensional TA in nine GM regions of interest (ROIs) using T1 magnetic resonance images from 101 patients with first-episode psychosis (FEP), 85 patients at clinical high risk (CHR) for psychosis, and 147 controls. Via principal component analysis, three features of gray-level cooccurrence matrix - informational measure of correlation 1 (IMC1), autocorrelation (AC), and inverse difference (ID) - were selected to analyze cortical texture in the ROIs that showed a significant change in volume or CTh in the study groups. Significant reductions in GM volume and CTh of various frontotemporal regions were found in the FEP compared with the controls. Increased frontal AC was found in the FEP group compared to the controls after adjusting for volume and CTh changes. While volume and CTh were preserved in the CHR group, a stagewise nonlinear increase in frontal IMC1 was found, which exceeded both the controls and FEP group. Increased frontal IMC1 was also associated with a lesser severity of attenuated positive symptoms in the CHR group, while neither volume nor CTh was. The results of the current study suggest that frontal IMC1 may reflect subtle, dynamic GM changes and the symptomatology of the CHR stage with greater sensitivity, even in the absence of gross GM abnormalities. Some structural mechanisms that may contribute to texture changes (e.g., macrostructural cortical lamina, neuropil/myelination, cortical reorganization) and their possible implications are explored and discussed. Texture may be a useful tool to investigate subtle and dynamic GM abnormalities, especially during the CHR period.
논문정보
- Research article
- 2023년 07월 (BRIC 등록일 2023-08-09)
- 국내 연구진
- 바이오·의료융합 > 뇌인지과학
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