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Published on: August 14, 2019
Diffusion weighted MR imaging in non-infarct lesions of the brain
1Department of Radiology, American Hospital, Sişli, Istanbul, Turkey. ercankaraarslan@yahoo.com
Abstract:
Diffusion weighted imaging (DWI) is a relatively new method in which the images are formed by the contrast produced by the random microscopic motion of water molecules in different tissues. Although DWI has been tried for different organ systems, it has been found its primary use in the central nervous system. The most widely used clinical application is in the detection of hyperacute infarcts and the differentiation of acute or subacute infarction from chronic infarction. Recently DWI has been applied to various other cerebral diseases. In this pictorial paper the authors demonstrated different DWI patterns of non-infarct lesions of the brain which are hyperintense in the diffusion trace image, such as infectious, neoplastic and demyelinating diseases, encephalopathies - including hypoxic-ischemic, hypertensive, eclamptic, toxic, metabolic and mitochondrial encephalopathies - leukodystrophies, vasculitis and vasculopathies, hemorrhage and trauma.
Insights
Diffusion weighted imaging (DWI) reveals brain lesions beyond strokes. This method visualizes various non-infarct conditions, offering new diagnostic insights for neurological diseases.
Area of Science:
- Neuroimaging
- Radiology
- Medical Imaging
Background:
- Diffusion weighted imaging (DWI) is an advanced MRI technique.
- It visualizes water molecule diffusion to create images.
- DWI is primarily used in the central nervous system for stroke detection.
Purpose of the Study:
- To demonstrate DWI patterns in non-infarct brain lesions.
- To highlight DWI's utility beyond acute stroke diagnosis.
- To showcase diverse cerebral pathologies detectable by DWI.
Main Methods:
- Utilizing diffusion weighted imaging (DWI) MRI.
- Analyzing DWI trace images for hyperintense patterns.
- Reviewing pictorial examples of various brain lesions.
Main Results:
- Identified characteristic DWI patterns in non-infarct lesions.
- Demonstrated DWI's sensitivity to infectious, neoplastic, and demyelinating diseases.
- Showcased DWI findings in various encephalopathies, leukodystrophies, vasculitis, hemorrhage, and trauma.
Conclusions:
- DWI is valuable for diagnosing a wide spectrum of non-infarct brain diseases.
- DWI provides crucial information for differentiating various neurological conditions.
- This imaging technique expands diagnostic capabilities in neuroradiology.
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