PT - JOURNAL ARTICLE AU - Currie, Geoffrey M TI - PHARMACOLOGY PART 5: CT AND MRI CONTRAST AID - 10.2967/jnmt.118.220012 DP - 2019 Feb 01 TA - Journal of Nuclear Medicine Technology PG - jnmt.118.220012 4099 - http://tech.snmjournals.org/content/early/2019/02/14/jnmt.118.220012.short 4100 - http://tech.snmjournals.org/content/early/2019/02/14/jnmt.118.220012.full AB - Pharmacology principles provide key understanding that underpins the clinical and research roles of nuclear medicine practitioners. The scope of practice of the nuclear medicine technologist demands knowledge and understanding of indications, contraindications, warnings, precautions, proper use, drug interactions, and adverse reactions for each medication to be used. This article is the sixth in a series of articles that aims to enhance the understanding of pharmacological principles relevant to nuclear medicine. This article will build on the introductory concepts, terminology and principles of pharmacology explored in the first two articles in the series. Specifically, this article will focus on the pharmacological principles and adverse reactions associated with iodinated and gadolinium contrast employed in computed tomography (CT) and magnetic resonance imaging (MRI) respectively. The next article in the series will address the pharmacology related to the emergency trolley (crash cart).