What visual phenomenon might a patient experience when being advanced quickly through the MRI scanner bore?

The phenomenon that a patient might experience when being advanced quickly through the MRI scanner bore is known as magnetophosphenes. This can occur due to the interaction of the magnetic field with the retinal cells in the eyes, causing fleeting visual sensations that resemble flashes of light. These sensations are a result of the strong magnetic fields used in MRI, which can stimulate the retina even before any images have been obtained.

Understanding magnetophosphenes is important in MRI safety practice because they can be startling to patients and may cause them temporary discomfort or anxiety. Awareness of this phenomenon helps imaging professionals prepare patients, addressing their questions or concerns before entering the scanner. Recognizing that this is a benign effect caused by the MRI equipment can help alleviate any distress experienced by the patient during the scan process.

Additionally, the other options relate to different effects that are not typically experienced by patients in the scanner, ensuring that the focus remains on the relevant experience during an MRI scan.