[MRI in spondylitis and spondylodiscitis].

Magnetic resonance imaging (MRI) is highly sensitive and specific for the diagnosis of spondylitis and in that respect is superior to other radiologic methods. Its excellent morphological resolution allows early recognition of pathologies and spread of the spondylitis. Affected vertebral bodies and discs reveal typical alterations in T1- and T2-weighted images; post-gadolinium images are necessary to improve specificity. MRI helps to diagnose tumors and degenerative changes. Thus, MRI is the method of first choice in the diagnosis and surveillance of spondylitis and spondylodiscitis.