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Updated: Aug 19, 2026
Assessing Cortical Cerebral Microinfarcts on High Resolution MR Images
Published on: November 20, 2015
Morphometry demonstrates loss of cortical thickness in cerebral microangiopathy
Christoph Preul1, Gabriele Lohmann, Margret Hund-Georgiadis
1Max-Planck-Institute of Human Cognitive and Brain Sciences, Stephanstrasse 1a, 04103 Leipzig, Germany. preul@cbs.mpg.de
Objective:
To evaluate the role of MR morphometry in the characterization of cerebral microangiopathy (CMA) in relation to clinical and neuropsychological impairment.
Subjects And Methods:
3D MR images of 27 patients and 27 age-matched controls were morphometrically analysed for regional thickness. The normalized values were related to the patients' clinical and neuropsychological scores. The patients were categorised according to the amount of structural MR signal changes. A ventricle index reflecting internal atrophy was related to MR morphology and cortical thickness as an indicator for external atrophy.
Results:
Cortical thickness was significantly reduced in the patients group (3.03 mm +/- 0.26 vs. 3.22 mm +/-0.13 in controls, p=0.001). The severest loss of cortical thickness occurred in severe CMA. Internal and external atrophy evolved in parallel and both showed a significant relationship with structural MR-abnormalities (p<0.05; r=-0.7; r=0.67; r=-0.74, respectively). Neuropsychological performance correlated strongly with the loss of cortical thickness.
Conclusions:
Cortical thickness was identified as the most sensitive parameter to characterize CMA. A strong correlation was found of morphometric parameters to the severity of CMA based on a score derived from T2-weighted MRI. The degree of cortical atrophy was directly related to the degree of neuropsychological impairment. Our findings suggest that the cortical thickness is a valid marker in the structural and clinical characterization of CMA.
Insights
MR morphometry, specifically cortical thickness, effectively characterizes cerebral microangiopathy (CMA) and its link to cognitive decline. Reduced cortical thickness in CMA patients correlates with disease severity and neuropsychological impairment.
Area of Science:
- Neuroimaging
- Neurology
- Medical Imaging
Background:
- Cerebral microangiopathy (CMA) is a condition affecting small blood vessels in the brain.
- Understanding the structural changes associated with CMA is crucial for diagnosis and management.
- Current characterization methods may not fully capture the extent of brain changes.
Purpose of the Study:
- To assess the utility of MR morphometry in characterizing cerebral microangiopathy (CMA).
- To investigate the relationship between MR morphometric measures and clinical/neuropsychological impairment in CMA patients.
- To determine if cortical thickness is a sensitive marker for CMA.
Main Methods:
- 3D MR images from 27 CMA patients and 27 controls were analyzed for regional cortical thickness.
- Morphometric values were correlated with clinical and neuropsychological scores.
- Patients were categorized by MR signal change severity; ventricle index (internal atrophy) and cortical thickness (external atrophy) were assessed.
Main Results:
- Patients with CMA exhibited significantly reduced cortical thickness compared to controls (3.03 mm vs. 3.22 mm, p=0.001).
- Severe CMA cases showed the most pronounced loss of cortical thickness.
- Both internal and external atrophy measures correlated significantly with MR abnormalities and with each other.
- Neuropsychological performance was strongly associated with decreased cortical thickness.
Conclusions:
- Cortical thickness is a highly sensitive parameter for characterizing CMA.
- Morphometric parameters, particularly cortical thickness, correlate strongly with CMA severity assessed by MRI.
- The degree of cortical atrophy directly relates to the severity of neuropsychological impairment.
- Cortical thickness serves as a valid marker for the structural and clinical assessment of CMA.
