If your fMRI protocol (usually set up be me and saved for you one the scanner) uses BrainWave during acquisition (the screen that pops up after the radiographer does the prep-scan before each fMRI acquisition), please note the following:
An observed bug in the GE software means that slices may be lost of if the BrainWave window is closed prematurely. If you are using Brainwave (i.e. if it is visible during your acquisitions) please make sure that it has reached 100% in the bottom right corner before closing it and moving on to the next scan .. either check this yourself or ask your friendly radiographer to check this for you on every scan.
Let me know if you experience any problems.
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