Ghost tuning of Human Heads

0. Shim until you are satisfied. At present, we are achvieving shims of less than 20 Hz.
1. Set up image acquisition (saved as protocol #13: human-ghost-tune)
2. scan parameters (as saved) should be as follows:

   Orientation	Mode	Sequence	Options	CV's
   Axial	2D	Grad. Echo	None	1 image/slice
   Flip	TE	TR	Setup	FOV
   80 degrees	45 ms	2500 ms	Water	40
   Thickness	Spacing	Range
   4 mm	1	S0-I0

3. From the Options Menu on apd2 - Enable Save Raw Data
4. Prescan, scan setup, and scan
5. Wait until the image is reconstructed
6. Utilities Menu -> Autotuning
7. Position ROIs (boxs) where ghosts are maximal, making the ROIs as symmetric as possible (but be careful NOT to include any signal from the head in your 'ghost' region-of-interest)
   • ...(but not required to be completely symmetric)
   • ...Click on each square and move w/ middle mouse button.
8. Click on proceed
9. Hit accept
10. Go back to options data, and turn save raw data off.
11. Go back to options data AGAIN, and be sure that raw data is off.