DIAGNOSTIC ACCURACY OF FLUID-ATTENUATED INVERSION-RECOVERY MAGNETIC RESONANCE IMAGING IN DETECTION OF ACUTE SUBARACHNOID HEMORRHAGE IN PATIENTS PRESENTING WITH SEVERE HEADACHE KEEPING LUMBER PUNCTURE AS GOLD STANDARD
DOI:
https://doi.org/10.52764/jms.23.31.4.9Abstract
ABSTRACT
OBJECTIVE: To evaluate the diagnostic efficacy of FLAIR MRI in identifying acute SAH among patients who present with severe headache, using LP as the gold standard.
MATERIALS AND METHODS: This was descriptive cross-sectional study conducted from 3nd September 2020 to 3rd Feb, 2021 at Department of Radiology, Khyber Teaching Hospital, Peshawar. Sample size was 266 collected via non-probability sampling technique.
RESULTS: The mean age was 46.3 + 14.1 years, (58.6% male, 41.4% female). On FLAIR-MRI, SAH was observed in 65.4% of patients while on follow up LP, SAH was recorded in 57.5% of patients. Sensitivity of FLAIR-MRI was found to be 91.5% and specificity 69.9%. The positive predictive value of the FLAIR-MRI was 80.5% and negative predictive value was 85.8%.
CONCLUSION: FLAIR-MRI has good sensitivity and specificity for the detection of SAH. As such, it is a useful radiological tool for diagnosis of SAH in adults and further studies are recommended to confirm its usefulness
Key words: Magnetic resonance imaging, lumber puncture, subarachnoid hemorrhage, headache
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