Three-dimensional MRI perfusion maps: a step beyond volumetric analysis in mental disorders

Area of Science:

• Neuroimaging
• Vascular Biology
• Radiology

Background:

• Vascular alterations are increasingly implicated in mental health disorders.
• Accurate assessment of brain perfusion is crucial for understanding neurological conditions.

Purpose of the Study:

• To introduce and validate a new 3D MRI analysis method for evaluating brain perfusion.
• To assess the method's sensitivity in detecting subtle perfusion differences in small brain regions.
• To explore potential vascular changes in schizophrenic patients.

Main Methods:

• Fusion of 3D time-to-peak parametric maps and high-resolution T1-weighted MRI images.
• Intrasubject analysis comparing whole brain perfusion with caudate nucleus perfusion.
• Application of the method to a small sample of schizophrenic patients and healthy controls.

Main Results:

• The method successfully detected significantly lower time-to-peak in the caudate nucleus compared to the whole brain in healthy controls.
• Schizophrenic patients exhibited a less uniform perfusion pattern compared to controls.
• The proposed method demonstrated sensitivity for detecting subtle perfusion changes in small volumes of interest.

Conclusions:

• The developed 3D MRI analysis is a feasible tool for assessing brain perfusion.
• The method can reveal subtle vascular changes in both healthy and pathological conditions.
• Further replication in larger cohorts is needed to confirm findings in schizophrenia.