A COMPARISON OF A CONVENTIONAL NONIONIC CONTRAST-MEDIUM (IOHEXOL) ALONE AND WITH ADRENALINE AND AN ISO-OSMOLAR NONIONIC CONTRAST-MEDIUM (IOTROLAN) IN COMPUTED TOMOGRAPHIC ARTHROGRAPHY OF THE SHOULDER

The physico-chemical properties of the iso-osmolar dimeric contrast me dium iotrolan offers potential advantages in computed tomographic arth rography (CTA). A trial was undertaken comparing iotrolan with iohexol to assess if these theoretical benefits produced an increase in the m easured densities in a series of shoulder CTAs. The results showed tha t iotrolan did produce clinically useful increases in density when com pared to a monomeric non-ionic contrast medium. The addition of adrena line to the monomeric contrast medium produced a significant improveme nt in the computed tomography density which surpassed that offered by the dimeric contrast medium alone.