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Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
Cerebral microbleeds, cognitive impairment, and MRI in patients with diabetes mellitus
Hong Zhou1, Juan Yang1, Peihan Xie1
1Department of Radiology of the First Affiliated Hospital, University of South China, Hengyang 421001, China.
Abstract:
Cerebral microbleeds (CMBs), a typical imaging manifestation marker of sporadic cerebral small vessel disease, play a critical role in vascular cognitive impairment, which is often accompanied by diabetes mellitus (DM). Hence, CMBs may, in part, be responsible for the occurrence and development of cognitive impairment in patients with diabetes. Novel magnetic resonance imaging (MRI) sequences, such as susceptibility-weighted imaging and T2*-weighted gradient-echo, have the capability of noninvasively revealing CMBs in the brain. Moreover, a correlation between CMBs and cognitive impairment in patients with diabetes has been suggested in applications of functional MRI (fMRI). Since pathological changes in the brain occur prior to observable decline in cognitive function, neuroimaging may help predict the progression of cognitive impairment in diabetic patients. In this article, we review the detection of CMBs using MRI in diabetic patients exhibiting cognitive impairment. Future studies should emphasize the development and establishment of a novel MRI protocol, including fMRI, for diabetic patients with cognitive impairment to detect CMBs. A reliable MRI protocol would also be helpful in understanding the pathological mechanisms of cognitive impairment in this important patient population.
Insights
Cerebral microbleeds (CMBs) detected by MRI are linked to cognitive impairment in diabetes. Advanced MRI techniques may help predict disease progression and understand underlying mechanisms.
Area of Science:
- Neurology
- Radiology
- Endocrinology
Background:
- Cerebral microbleeds (CMBs) are markers of small vessel disease and linked to cognitive impairment.
- Diabetes mellitus (DM) often co-occurs with cognitive impairment, with CMBs potentially contributing to this decline.
- Neuroimaging, particularly MRI, can detect CMBs and may predict cognitive decline in diabetic patients.
Purpose of the Study:
- To review the detection of CMBs using MRI in diabetic patients with cognitive impairment.
- To highlight the role of CMBs in the development of cognitive impairment in diabetes.
- To emphasize the need for advanced MRI protocols for early detection and understanding of cognitive impairment in diabetes.
Main Methods:
- Review of existing literature on MRI detection of CMBs in diabetic patients with cognitive impairment.
- Discussion of novel MRI sequences like susceptibility-weighted imaging and T2*-weighted gradient-echo.
- Exploration of functional MRI (fMRI) applications in assessing the correlation between CMBs and cognitive function.
Main Results:
- CMBs are frequently observed in diabetic patients with cognitive impairment.
- A correlation between CMBs and cognitive impairment in diabetes has been suggested by fMRI studies.
- Pathological brain changes, including CMBs, precede cognitive decline, making neuroimaging predictive.
Conclusions:
- MRI is crucial for detecting CMBs in diabetic patients with cognitive impairment.
- Further development of MRI protocols, including fMRI, is needed to better detect CMBs and understand cognitive impairment mechanisms in diabetes.
- Reliable MRI protocols can aid in predicting cognitive decline and guiding therapeutic strategies for diabetic patients.
