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Updated: May 6, 2026
Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases
Published on: July 28, 2013
Measurement of the apparent diffusion coefficient in paediatric mitochondrial encephalopathy cases and a comparison
Fatma Uysal1, Handan Cakmakçı1, Uluç Yiş2
1Dokuz Eylül University, Department of Pediatric Radiology, Izmir, Turkey.
Objectives:
To reveal the contribution of MRI and diffusion-weighted imaging (DWI) to the diagnosis of mitochondrial encephalopathy (ME) and to evaluate the parenchymal changes associated with this disease in the involved parenchymal areas using the apparent diffusion coefficient (ADC) parameter.
Methods:
Ten patients who had undergone MRI and DWI analysis with a pre-diagnosis of neurometabolic disease, and who were subsequently diagnosed with ME in laboratory and/or genetic studies, were included in our study. ADC values were compared with a control group composed of 20 patients of similar age with normal brains. Evaluations involved measurements made in 20 different areas determined on the ADC map. The dominance or contribution of ADC coefficient measurements to the conventional sequences was compared with the controls.
Results:
In the first examination, an increase in both diffusion and ADC values was detected in six cases and diffusion restriction and a decrease in ADC values in three patients. While an increase in both diffusion and ADC values was demonstrated in four cases, there was diffusion restriction and a decrease in ADC values in three cases in the control examinations.
Conclusions:
DWI provides information that complements conventional MRI sequences in the diagnosis of ME.
Insights
Diffusion-weighted imaging (DWI) enhances magnetic resonance imaging (MRI) for diagnosing mitochondrial encephalopathy (ME). DWI reveals parenchymal changes using apparent diffusion coefficient (ADC) values, aiding in ME diagnosis.
Area of Science:
- Neuroimaging
- Radiology
- Neurology
Background:
- Mitochondrial encephalopathy (ME) is a group of neurological disorders.
- Accurate diagnosis of ME is crucial for effective management.
- Conventional MRI sequences may not fully capture the nuances of ME-related brain changes.
Observation:
- This study investigated the role of MRI and diffusion-weighted imaging (DWI) in diagnosing ME.
- Apparent diffusion coefficient (ADC) values were analyzed in patients with ME and compared to a control group.
- Parenchymal changes in ME were evaluated using ADC mapping.
Findings:
- DWI provided complementary information to conventional MRI sequences in diagnosing ME.
- In ME patients, increased diffusion and ADC values were observed in some cases, while diffusion restriction and decreased ADC values were seen in others.
- Control group examinations showed varying diffusion and ADC values, highlighting the specificity of findings in ME.
Implications:
- DWI, particularly ADC mapping, is a valuable tool for diagnosing mitochondrial encephalopathy.
- Integrating DWI into diagnostic protocols can improve the detection and characterization of ME.
- Further research can explore the prognostic value of DWI findings in ME.
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