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Updated: Jun 26, 2026
08:35
Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction
Published on: August 17, 2022
The "Brain's Traffic Map" Reveals Neural Pathways Linked to Coronary Microvascular Dysfunction in Women
Arzu C Has Silemek1,2, Jeffrey C Wertheimer3, Janet Wei4
1Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, California, USA.
Brain and Behavior
|June 25, 2026
Summary
Unified Structural and Functional Connectivity (USFC) predicts coronary endothelial function and cognition in women with INOCA. This novel neuroimaging biomarker reveals shared neural pathways underlying systemic vascular vulnerability.
Area of Science:
- Cardiovascular imaging and neuroimaging research.
- Integrative medicine and biomarker discovery.
Background:
- The brain-heart axis is crucial for vascular health, but integrated imaging biomarkers for neural and coronary microvascular dysfunction are lacking.
- Coronary microvascular dysfunction is linked to cognitive decline, yet the neural mechanisms are unclear.
Purpose of the Study:
- To investigate if Unified Structural and Functional Connectivity (USFC), a multimodal MRI measure of brain network efficiency, predicts coronary endothelial function and cognitive performance in women with ischemia and no obstructive coronary artery disease (INOCA).
Main Methods:
- Thirty-three women with suspected INOCA underwent invasive coronary function testing, cardiac MRI, cognitive tests, and multimodal brain MRI.
- Unified Structural and Functional Connectivity (USFC), structural connectivity (SC), and functional connectivity (FC) were calculated for 10 brain pathways.
- Support vector regression and logistic classification were used to assess predictive performance.
Main Results:
- USFC explained 16%-20% more variance in coronary endothelial function, myocardial perfusion reserve, and cognition compared to SC or FC alone.
- Specific neuro-cardiac pathways (left caudate-superior medial orbital gyrus and right calcarine-inferior occipital gyrus) predicted crystallized cognition and coronary endothelial function.
- USFC demonstrated superior discrimination between low and high coronary blood flow compared to SC or FC.
Conclusions:
- USFC serves as a sensitive biomarker for systemic vulnerability by identifying neuro-cardiac pathways linking cerebral efficiency with coronary endothelial function.
- Occipital and frontostriatal pathways represent shared substrates of dysfunction in vascular conditions.
- USFC provides a mechanistic framework for detecting vascular risk in metabolically active tissues.
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