AJNR. American journal of neuroradiology
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AJNR Am J Neuroradiol · Sep 2015
Neuroradiologic Diagnosis of Minor Leak prior to Major SAH: Diagnosis by T1-FLAIR Mismatch.
In major SAH, the only method to diagnose a preceding minor leak is to ascertain the presence of a warning headache by interview; however, poor clinical condition and recall bias can cause inaccuracy. We devised a neuroradiologic method to diagnose previous minor leak in patients with SAH and attempted to determine whether warning (sentinel) headaches were associated with minor leaks before major SAH. ⋯ We conclude that warning headaches diagnosed by interview are not a product of recall bias but are the result of actual leaks from aneurysms.