title: Head and neck haemangiomas: contrast-enhanced three-dimensional MR angiography.
abstract: We evaluated the clinical effectiveness of contrast-enhanced three-dimensional (3D) magnetic resonance angiography (MRA) for diagnosing head and neck haemangiomas. We studied six patients using a magnetization prepared rapid acquisition gradient-echo (MP-RAGE) sequence on a 1.5-T system. Conventional T1- and T2-weighted and contrast-enhanced images were also obtained. The images were compared with histological findings. In four cavernous haemangiomas, a mass was partially visible as an enhancing lesion on the early phase of MRA, and was completely visible as a larger enhancing lesion in the late phase, showing slow blood flow. In two capillary haemangiomas, a mass was completely visible in the early phase showing fast flow. In all patients, MRA clearly showed both the haemangiomas and the external carotid artery branches. MRA allowed assessment of the relationship between the haemangiomas and the feeding arteries, and of the haemodynamics.
authors: Department of Dental Radiology and Radiation Research, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
authors: A
authors: A
authors: Tetsumura
authors: N
authors: N
authors: Yoshino
authors: I
authors: I
authors: Yamada
authors: T
authors: T
authors: Sasaki
mesh_terms: D000293:Adolescent; D000328:Adult; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006391:Hemangioma / Q000175:diagnosis*; D018324:Hemangioma, Capillary / Q000175:diagnosis; D006392:Hemangioma, Cavernous / Q000175:diagnosis; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000175:diagnosis
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA