Common warnings and error messages

While operating the scanner you may be prompted with warnings and error messages. These should all be taken seriously, but not all are necessarily a reason for concern. The following warnings and error messages are common.

PNS

Some sequences may be preceded by a warning message regarding peripheral nerve stimulation (PNS), which the participant experiences as a slight tingling feeling in the extremities of the body. PNS is not dangerous to the participant, but he or she may experience physical discomfort and/or mental stress. It is up to the MR operator to decide whether the participant needs to be informed or not.