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.

Patient ventilation

Usually the ventilation is set at level one out of five. Philips recommends higher levels of ventilation, but participants generally experience higher levels as unpleasant. This warning can therefore be ignored.