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Brain Imaging

Brain Imaging

Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...

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Brain Structural and Functional Damage Network Localization of Suicide.

Xiaohan Zhang¹, Ruoxuan Xu¹, Haining Ma¹

¹Department of Radiology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Research Center of Clinical Medical Imaging, Anhui Province, Hefei, China; Anhui Provincial Institute of Translational Medicine, Hefei, China; Anhui Provincial Key Laboratory for Brain Bank Construction and Resource Utilization, Hefei, China.

Biological Psychiatry

|January 12, 2024

Summary

Neuroimaging studies reveal distinct brain networks associated with suicide. Identifying these suicide brain damage networks offers new insights into neurobiological mechanisms and prevention strategies.

Keywords:

Brain network Brain structure and function Neuroimaging Resting-state functional connectivity Suicide

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Area of Science:

Neuroimaging
Neurobiology
Brain Networks

Background:

Inconsistent results from neuroimaging research on suicide correlates.
Limited research on network localization of suicide despite network mapping recognition.

Purpose of the Study:

Clarify the network localization of suicide using neuroimaging data.
Identify specific brain damage networks associated with suicide.

Main Methods:

Analyzed 63 studies (2135 suicidal, 2606 non-suicidal individuals).
Applied functional connectivity network mapping to resting-state fMRI datasets.
Mapped brain damage locations to 3 suicide brain damage networks.

Main Results:

Gray matter volume damage network involves dorsal default mode, basal ganglia, and anterior salience networks.
Task-induced activation damage network implicates similar canonical networks.
Resting-state activity damage network localized to orbitofrontal cortex and middle cingulate cortex.

Conclusions:

Reconciles heterogeneous prior neuroimaging findings on suicide.
Provides network-level insights into suicide neurobiology.
Informs targeted suicide prevention strategies.