Artifact: Impossible to say for certain without the images, but metallic objects like screws cause a magnetic susceptibility or "bloom" artifact which obscures or distorts adjacent anatomy. It is not real, it is an artifact due to the interaction of the magnetic field with the screw. This commonly causes the thecal sac/cord to look distorted on MRI.
Answered 8/17/2017
930 views
A doctor has provided 1 answer
5 doctors weighed in across 3 answers
4 doctors weighed in across 2 answers
5 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question