Early detection of schizophrenia by diffusion weighted imaging

Area of Science:

• Neuroimaging
• Psychiatry
• Radiology

Background:

• Early detection of schizophrenia is crucial for intervention.
• Cortical atrophy may be an early indicator of schizophrenia risk.
• Conventional imaging methods may not be sensitive enough for early detection.

Purpose of the Study:

• To investigate the feasibility of using a novel magnetic resonance imaging (MRI) method to detect early cortical atrophy in individuals at high risk for schizophrenia.
• To compare the sensitivity of apparent diffusion coefficient (ADC) mapping with conventional volumetric assessments in identifying early atrophic changes.

Main Methods:

• Diffusion-weighted magnetic resonance imaging (dMRI) was employed.
• Voxelwise analysis of apparent diffusion coefficient (ADC) maps was performed.
• High-risk individuals (n=15), their diagnosed relatives (n=15), and healthy controls (n=25) were studied.

Main Results:

• ADC mapping revealed significant deficits in four left-sided brain regions (parahippocampal gyrus, lingual gyrus, superior frontal gyrus, middle frontal gyrus) in high-risk individuals.
• Conventional volumetric analysis of ventricular spaces did not detect significant differences between high-risk subjects and controls.
• Left-sided regional brain deficits were observed in high-risk individuals compared to controls.

Conclusions:

• Apparent diffusion coefficient (ADC) mapping is a more sensitive technique than conventional volumetric assessments for detecting early signs of cortical atrophy in individuals at high risk for schizophrenia.
• ADC mapping may serve as a valuable tool for the early prediction of schizophrenia.
• Future research should utilize ADC mapping for early schizophrenia prediction studies.