View source for 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.

==weird keyboard output==
Harmless but annoying. Press ctrl+alt+delete and log back in using gyrotest. 

==Gradient amplifier Rack Fault==
When starting a scan you may get the message ''Gradient amplifier Rack Fault''.

==Humidity==
[[File:Examination room humidity error message.png|thumb|Examination room humidity error message]]
The examination room humidity level should be at least 35%. If the humidity is too low, you will get a warning message.

==Liquid Cooling Cabinet==
You may get a message that an error was detected by the Liquid Cooling Cabinet. This error can occur along with the error ''Magnet pressure control: compressor high temp; check water cooling'' or the error ''Facility cooling water too hot, please contact local Hospital Engineer'' (klopt dit?).

==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, as it causes dry eyes and mouth. This warning can therefore be ignored.

==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.

==Prescans==
You may get a message that the scan you are trying to start requires too many prescans and that you should contact Philips Customer Support.

==SAR==
[[File:SAR firstlevelcontrolled.png|thumb|SAR - first level controlled operating mode error message]]
When the specific absorption rate (SAR) exceeds 2 W/kg you will get a warning message, asking whether you allow first level controlled operating mode. High levels of SAR may cause global and local heating and potentially burns. Please do not proceed scanning without medical supervision or expertise.













==Software key expiration==
[[File:Software key expiration.jpg|thumb|Software key expiration error message]]
You may get a message when starting the software that a softwarekey will expire within 10 days. Check the log book to see whether this has been reported yet and if not, do so yourself and always contact the staff of the Spinoza Centre.







==Process scan engine crashed==
You may get a message that says: "Process scan engine crashed. Press ok to exit the system. Please contact Philips customer service."