Magnetic Resonance Imaging (MRI) Practice Test

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What is NOT a type of fomite found in an MRI environment?

Injection syringe
Instruments
Patient linens
Contrast agents

The correct answer is: Injection syringe

The category of "fomites" refers to inanimate objects or surfaces that can carry infectious organisms and thereby facilitate the transmission of disease. In an MRI environment, common fomites typically include instruments that are used during medical procedures, patient linens, which can harbor bacteria or other pathogens, and various medical supplies. Injection syringes are generally considered medical instruments and do not solely function as part of the environment; they are not left in the MRI area but rather used in procedures involving patient care. Contrast agents, on the other hand, are substances that are introduced into the patient’s body to enhance imaging results and are not considered fomites as they do not serve as carriers for transmission when disposed of properly. Given this context, the most fitting choice for something that does not constitute a fomite in an MRI environment is the injection syringe, as it is an instrument used transiently rather than a part of the environment that could remain contaminated and spread infection.