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Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
A study of brain MRI characteristics and clinical features in 76 cases of Wilson's disease
Wei Zhong1, Zhihua Huang2, Xiangqi Tang1
1Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China.
Abstract:
To explore the value of brain MRI in Wilson's disease (WD) in relating neurological symptoms with clinical manifestations of the disease, a retrospective analysis of 76 WD patients with neurological symptoms was performed. Patients' neurological symptoms, brain MRI features, and laboratory findings were noted. MRI was abnormal in 89.5% of patients. The lenticular nucleus was the most commonly lesioned site, being affected in 75% of patients, followed by the caudate nucleus (lesioned in 30.9% of patients), pons (30.9%), thalamus (29.4%), midbrain (20.6%), cerebral cortex and white matter (5.9% of patients in each case), and cerebellum and hippocampus (4.4% in each case). Brain atrophy was also relatively common, occurring in 31.6% of subjects. We also determined that the sensitivity of T2 was 89.7%, while that of T1 and FLAIR were both 76.5%. 23 patients were scanned without the benefit of contrast enhancement, and of the 8 patients who were scanned with DWI, 6 exhibited hypointensities, while 2 were normal. The 5 patients who underwent susceptibility-weighted imaging (SWI) all showed hypointensities. A longer disease duration appeared to be more prevalent when thalamic abnormalities were observed, and tremor seemed to be correlated with cerebral atrophy. Ataxia was correlated with brainstem, cerebellar, and cerebral cortex lesions. It was determined that the T2 sequence has a higher sensitivity compared to T1 and FLAIR in the detection of brain lesions.
Insights
Brain MRI is valuable for diagnosing Wilson's disease (WD) neurological symptoms. T2-weighted MRI sequences show higher sensitivity in detecting brain lesions compared to T1 and FLAIR sequences.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Wilson's disease (WD) is a genetic disorder causing copper accumulation.
- Neurological symptoms are a common manifestation of WD.
- Brain MRI plays a crucial role in assessing neurological involvement in WD.
Purpose of the Study:
- To evaluate the diagnostic value of brain MRI in correlating neurological symptoms with clinical findings in WD patients.
- To identify specific MRI patterns associated with different neurological manifestations of WD.
Main Methods:
- Retrospective analysis of brain MRI scans from 76 WD patients with neurological symptoms.
- Detailed recording of neurological symptoms, MRI features, and laboratory findings.
- Comparison of sensitivity for different MRI sequences (T1, T2, FLAIR, DWI, SWI).
Main Results:
- MRI abnormalities were detected in 89.5% of patients.
- The lenticular nucleus was the most frequently affected site (75%).
- T2-weighted sequences demonstrated higher sensitivity (89.7%) in detecting brain lesions compared to T1 and FLAIR (76.5%).
- Brain atrophy was observed in 31.6% of patients.
- Specific correlations were found between thalamic abnormalities and disease duration, tremor and cerebral atrophy, and ataxia with brainstem, cerebellar, and cerebral cortex lesions.
Conclusions:
- Brain MRI is highly sensitive in detecting neurological abnormalities in Wilson's disease.
- T2-weighted MRI sequences are superior for identifying brain lesions in WD.
- MRI findings correlate with specific neurological symptoms and disease progression, aiding in diagnosis and management.
