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Alzheimer’s AI MRI Diagnosis: ANA-GNN Reaches 85.23% Accuracy in ADNI

MHD featured image for ANA-GNN Alzheimer's AI MRI diagnosis in the ADNI cohort.

A 2026 ADNI study reported 85.23% accuracy for ANA-GNN, a graph neural network that combined structural MRI regional features with clinical variables to classify cognitively normal controls, mild cognitive impairment, and Alzheimer’s disease.1 The result is useful, but the clinical-feature ablation dropped accuracy to 68.35%, so the model should be read as multimodal decision-support research, …

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Dynamic FDG-PET Signal Quality Beats Static PET in Focal Epilepsy

MHD featured image for dynamic FDG-PET signal quality in focal epilepsy neuroimaging.

A 2026 medRxiv study of 30 adults with drug-resistant focal epilepsy found that dynamic FDG-PET had higher model-adjusted signal quality than static PET in most brain regions, including >80% posterior probability of superiority in 29 of 36 regions. Research Highlights Dynamic PET beat static PET: interictal dynamic FDG-PET showed higher signal quality than static PET …

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Striatal Dopamine Drops From Psychosis to Schizophrenia Remission

Photoreal illustration of a brain with the striatum highlighted and dopamine synthesis pathways visualized, representing longitudinal PET imaging in schizophrenia.

The dopamine hypothesis of schizophrenia is the field’s longest-running mechanistic story, and most of its supporting evidence has been cross-sectional. A 2026 longitudinal PET study by Schulz and colleagues followed the same 28 patients across psychosis and early remission.1 Research Highlights The dopamine hypothesis of schizophrenia is the field’s longest-running mechanistic story. Cross-sectional 18F-DOPA PET …

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Ketamine Increases Amygdala Volume in Treatment-Resistant Depression (TRD) (2024 MRI Study)

Depression is a complex mental health condition that significantly affects an individual’s emotional and physical well-being. Recent advances in neuroimaging have provided deeper insights into how major depressive disorder (MDD) alters brain structures, particularly the hippocampus and amygdala, and how treatments like ketamine can potentially reverse these changes. A new study using 3T and 7T …

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Brain Biomarkers in Suicide Attempts: Elevated 5-HT1A Heteroreceptors & Hyperactivity in Superior Temporal Gyrus (2023 Review)

Suicide, a tragic end to around 800,000 lives each year, remains one of the most perplexing and devastating phenomena in mental health. Despite the vast number of studies and data, accurately predicting who is at risk of suicide has remained largely elusive, with current tools heavily reliant on subjective assessments and the clinician’s experience. A …

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Customized Transcranial Magnetic Stimulation (TMS) Protocols for Depression & Psychiatric Disorders Based on Personalized Neuroimaging (2023 Evidence)

Recent advancements in neuroimaging and brain stimulation techniques, particularly Transcranial Magnetic Stimulation (TMS), are revolutionizing the treatment of psychiatric disorders. These technologies, leveraging our understanding of individual brain network architectures, offer the potential for highly personalized treatments. Highlights: Personalization of Treatment: Neuroimaging advancements allow for the personalization of brain stimulation targets, particularly in Transcranial Magnetic …

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Lifetime Major Depression Linked to Increased Activation of Amygdala & DLPFC (2024 Study)

Major depressive disorder (MDD) is a prevalent mental health condition marked by significant social and economic impacts. Recent research has advanced our understanding of MDD, particularly its association with brain activity and connectivity. A new study examined the relationship between lifetime MDD (LMDD) and brain activation in response to fearful faces, focusing on the amygdala …

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