ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Magnetic Resonance Imaging (MRI) angiography scan of the neck and brain of a 25 year old female patient, showing multiple stenoses (narrowings) in the vertebral arteries of the neck as well as aneurysm (bulging). Narrowing of a blood vessel (stenosis) can impede blood flow. The patient complained of vertigo (dizziness).
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