Which of the following is a risk associated with fMRI scans?

• A. Uncontrolled neurological reactions
• B. Exposure to radiation from radioactivity
• C. Potential discomfort for claustrophobic patients
• D. Incidences of surgery complications

Answer: (C)

The correct answer highlights a recognized risk associated with functional magnetic resonance imaging (fMRI) scans, particularly for individuals who experience claustrophobia. fMRI scans require the patient to lie inside a large, tube-like machine, which can induce feelings of anxiety and panic in those who are uncomfortable in confined spaces. This discomfort may lead to difficulties in completing the procedure, as the patient may not be able to remain still, potentially compromising the quality of the imaging results.

In contrast to this, other options present risks that are either not applicable to fMRI or relate to different medical procedures. For example, fMRI does not involve exposure to ionizing radiation like other imaging techniques such as X-rays or CT scans, making concerns about radiation exposure irrelevant. Additionally, while uncontrolled neurological reactions may arise during brain imaging, they are not a direct risk of fMRI itself, which is considered a safe procedure for most patients. Lastly, incidences of surgery complications are not relevant to fMRI, as the procedure is non-invasive and does not involve surgical intervention.