[Nuclear magnetic resonance tomography of the orbits. Initial experiences using the paramagnetic contrast medium...

In 21 patients with orbital mass lesions MRI was performed before and after administration of paramagnetic contrast medium, Gadolinium-DTPA. In comparison to the plain scan the differentiation of the tumorous tissue against the surrounding structures was improved after application of contrast medium despite a partially moderate increase in signal intensity. Especially highly vascular tumors and vessel diseases show a significant contrast enhancement. With increasing experience in larger number of patients a tissue differentiation seems to be possible.