MR imaging of intracranial epidermoid tumors: specific diagnosis with Turbo-FLAIR pulse sequence.
The purpose of this study is to present the imaging findings with particular reference to the FLAIR magnetic resonance (MR) pulse sequence, of four patients with epidermoid cysts. In all cases CT showed hypodense lesions with stippled peripheral calcifications and no enhancement. The MR showed low signal intensity lesions in T1-weighted images, high signal intensity in T2-weighted lesions, no or minor enhancement after gadolinium administration and characteristic heterogeneous appearance in FLAIR images. Including the FLAIR sequence in MR imaging, a specific diagnosis can be suggested.
Karantanas
A H
AH
Department of Computed Tomography & Magnetic Resonance Imaging, Larissa General Hospital, 1 Tsakalof Street, 41221, Larissa, Greece. apolsen@yahoo.com
D001932:Brain Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D004814:Epidermal Cyst / Q000175:diagnosis* / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D012815:Signal Processing, Computer-Assisted; D014057:Tomography, X-Ray Computed