title: Clinical pearls: cerebrospinal fluid double ring sign.
authors.affiliation: Department of Emergency Medicine, St. Vincent Mercy Medical Center, Toledo, OH 43608-2691, USA. cmarco2@aol.com
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Marco
mesh_terms: D001774:Blood Chemical Analysis / Q000379:methods*; D003937:Diagnosis, Differential; D006407:Hematoma, Epidural, Cranial / Q000134:cerebrospinal fluid* / Q000000981:diagnostic imaging; D020199:Hematoma, Subdural, Acute / Q000134:cerebrospinal fluid* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000601:surgery; D014057:Tomography, X-Ray Computed