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Eclamptic encephalopathy: MRI, including diffusion-weighted images
Y Watanabe1, M Mitomo, Y Tokuda
1Department of Radiology, Osaka National Hospital, 2-1-14 Hoenzaka Chuo-ku, Osaka 540-0006, Japan. watanabe@onh.go.jp
Neuroradiology
|December 17, 2002
Summary
Eclampsia imaging reveals brain lesions. Diffusion-weighted imaging (DWI) showed variable changes, with reduced ADC indicating potential infarction in this rare pregnancy complication.
Area of Science:
- Neurology
- Radiology
- Obstetrics
Background:
- Eclampsia is a rare but serious condition affecting pregnant and puerperal women.
- Brain imaging is crucial for understanding the pathophysiology of eclampsia.
Purpose of the Study:
- To analyze the imaging features of eclampsia in patients.
- To evaluate the utility of diffusion-weighted imaging (DWI) in differentiating cytotoxic and vasogenic edema in eclampsia.
Main Methods:
- Analysis of brain imaging features in five eclampsia patients.
- Use of T2-weighted and diffusion-weighted imaging (DWI) with apparent diffusion coefficient (ADC) mapping.
- All patients were imaged within 4 days of symptom onset.
Main Results:
- All five patients exhibited T2-prolonged lesions in the brain, commonly in the basal ganglia, pons, and posterior cerebral white matter.
- Diffusion-weighted imaging (DWI) showed variable intensity in these lesions.
- Apparent diffusion coefficient (ADC) values were decreased in one patient and increased in the others.
- The lesion with a reduced ADC in one patient progressed to infarction.
Conclusions:
- Brain imaging, particularly DWI, can identify characteristic lesions in eclampsia.
- Variable ADC values suggest different edema types or stages.
- Reduced ADC may predict lesion progression to infarction in eclampsia.
