[Contrast enhanced fast fluid-attenuated inversion-recovery MR imaging for diagnosing cerebral venous angioma: report of two cases].
It has been reported that contrast-enhanced fluid-attenuated inversion-recovery (FLAIR) sequences were useful for detecting superficial abnormalities, such as meningeal disease, because they do not demonstrate contrast enhancement of cortical vessels with slow flow as do T1-weighted images. We reported the usefulness of contrast-enhanced FLAIR images to differentiate cerebral venous angioma from tumor in two patients. Case 1 was a 71-year-old man developed cortical hemorrhage. Post contrast-enhanced T1-weighted images showed an enhanced lesion around the hematoma, whereas contrast-enhanced FLAIR images showed no enhancement of the lesion, thus he was diagnosed as cortical hemorrhage from cerebral venous angioma. Case 2 was a 72-year-old woman, who was examined MR images because of the jugular foramen neurinoma. There was a T2-high-intensity lesion in the right frontal lobe, and post contrast-enhanced T1-weighted images showed an enhanced lesion in and around the T2-high-intensity lesion. Post-contrast FLAIR images showed no enhancement, and she was diagnosed as cerebral venous angioma. Contrast-enhanced fast FLAIR sequences was useful in differentiation between venous angiomas and tumors. Identification of these lesions was due to the flow-void phenomenon in vessels with slow-flowing blood such as venous angioma, which could not be differentiated from tumors on T1-weighted images.
Yamasaki
Fumiyuki
F
Department of Neurosurgery, Graduate School of Biomedical Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8551, Japan.
Kurisu
Kaoru
K
Arita
Kazunori
K
Yamanaka
Masami
M
Ohba
Shinji
S
Hanaya
Ryosuke
R
Shibukawa
Masaaki
M
Kiura
Yoshihiro
Y
Sakamoto
Shigeyuki
S
Okazaki
Takahito
T
Takaba
Junko
J
Abe
Nobukazu
N
D000368:Aged; D001932:Brain Neoplasms / Q000175:diagnosis*; D020787:Central Nervous System Venous Angioma / Q000175:diagnosis*; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male
D003287:Contrast Media; D019786:Gadolinium DTPA