Published: 14 April 2017
Author(s): Ingrid Boehm, John Morelli, Knud Nairz, Patricia Silva Hasembank Keller, Johannes T. Heverhagen
Issue: April 2017
Section: Letter to the Editor

Diagnostic imaging procedures of the gastrointestinal tract are most commonly performed following administration of contrast media (CM), either enteric, IV, or both. Barium or iodinated CM in concert with X-ray based imaging modalities and gadolinium-based contrast agents (GBCA) for magnetic resonance imaging are frequently utilized to improve delineation of the gastrointestinal tract. Based on previously published data, iodinated CM are utilized for an estimated >100 million procedures and GBCA for an estimated >30 million procedures worldwide every year [1–4].