Diffusion Weighted Imaging Findings in the Acute Lateral Medullary Infarction
Journal of Clinical Neurology
;
: 107-112, 2006.
Article
in English
| WPRIM
| ID: wpr-52488
ABSTRACT
BACKGROUND AND PURPOSE:
Negative findings on diffusion-weighted imaging (DWI) does not exclude the possibility of brainstem infarction, particularly in the acute stage of medullary lesion. Our aim was to investigate the false-negative rate of DWI in patients with acute lateral medullary infarction.METHODS:
We applied DWI to 26 patients with a clinical diagnosis of lateral medullary infarction within 72 h of the onset. We assessed relationships between initial DWI findings and time-to-MRI (the time between onset of symptoms and initial DWI), number of clinical symptoms and signs, and final lesion volume.RESULTS:
There were 8 cases (31%) of false negatives in the initial DWI results. The occurrence of false-negative DWI findings decreased significantly as the time-to-MRI increased (P=0.014). However, the false-negative rate was not significantly correlated with the number of clinical symptoms and signs or the final lesion volume.CONCLUSIONS:
The diagnosis of lateral medullary infarction should not be ruled out on the basis of early negative DWI. To confirm the lesion, follow-up DWI or further MRI should be performed in cases with early negative DWIresults:
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Magnetic Resonance Imaging
/
Follow-Up Studies
/
Brain Stem Infarctions
/
Diagnosis
/
Diffusion
/
Infarction
Type of study:
Diagnostic study
/
Observational study
/
Prognostic study
Limits:
Humans
Language:
English
Journal:
Journal of Clinical Neurology
Year:
2006
Type:
Article
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