[Magnetic resonance angiography of the head and neck area].
Magnetic resonance angiography is a noninvasive method in vascular imaging using non-contrast-enhanced and contrast-enhanced techniques. The contrast media used in contrast-enhanced magnetic resonance angiography are different from the X-ray contrast media and do not affect the thyroid gland or renal function. In detecting hyper-vascularized lesions in the head and neck, contrast-enhanced magnetic resonance angiography is the method of choice, which provides an acceptable quality in comparison to digital subtraction angiography. Future developments in magnetic resonance imaging techniques will cause a wider use of magnetic resonance angiography, especially in head and neck imaging. Digital subtraction angiography should therefore only be used in problem cases and for preoperative embolization.
Institut für Bildgebende Diagnostik, Helios-Klinikum Erfurt GmbH, Erfurt. raschenbach@erfurt.helios-kliniken.de
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Aschenbach
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Esser
D015901:Angiography, Digital Subtraction; D001165:Arteriovenous Malformations / Q000175:diagnosis; D016893:Carotid Stenosis / Q000175:diagnosis; D000075202:Contraindications; D003937:Diagnosis, Differential; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D018810:Magnetic Resonance Angiography; D009389:Neovascularization, Pathologic / Q000175:diagnosis; D010038:Otorhinolaryngologic Diseases / Q000175:diagnosis*; D010039:Otorhinolaryngologic Neoplasms / Q000098:blood supply / Q000175:diagnosis*; D010235:Paraganglioma / Q000098:blood supply / Q000175:diagnosis; D012680:Sensitivity and Specificity