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MR-imaging of the spinal column using Turbo-Spin-Echo-Sequences (TSE) often shows flow-void structures resembling intraspinal vessels. Due to misinterpretation of those phenomenons invasive diagnostic procedures may be performed to diagnose an arteriovenous malformation (myelography, spinal angiography).The knowledge of the typical morphology of these csf-flow artifacts normally is sufficient to differentiate artifact and arteriovenous malformation. Using our modified gradient-echo-sequence it is possible to distinguish csf-flow artifact from arteriovenous malformation even in atypical cases preventing patients from superflous invasive procedures.