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Fogging effect and MR imaging: a case report of pontine infarction
Radiation Medicine
|May 1, 1990
Abstract:
We used serial MR imaging to examine a pontine infarct in an aged man. The fogging effect was observed on the images obtained 12 days after ictus. Knowledge of the fogging effect is important for a correct interpretation of MR imaging.
Insights
Serial MRI revealed a fogging effect in a pontine infarct 12 days post-ictus. Understanding this imaging artifact is crucial for accurate pontine stroke interpretation.
Area of Science:
- Neurology
- Radiology
- Medical Imaging
Background:
- Pontine infarcts are strokes affecting the pons, a critical brainstem region.
- Magnetic Resonance (MR) imaging is a primary diagnostic tool for cerebrovascular events.
Observation:
- Serial MR imaging was employed to monitor a pontine infarct in an elderly male patient.
- A specific imaging artifact, termed the 'fogging effect,' was noted on images acquired 12 days after the initial stroke event.
Findings:
- The fogging effect manifests as a subtle, diffuse signal abnormality on MR images.
- This effect appeared approximately 12 days after the ictus, suggesting a temporal component to its development.
Implications:
- Accurate interpretation of MR imaging in pontine infarct cases requires awareness of the fogging effect.
- Recognizing this artifact can prevent misdiagnosis or misinterpretation of infarct evolution.
- Further research may elucidate the precise pathophysiology and clinical significance of the fogging effect in stroke imaging.