The FLASH single echo data has been reconstructed from individual coil images and post-processed as follows:

#_magnitude.nii.gz (original magnitude combined with sum-of-squares (Roemer, P.B., Edelstein, W.A., Hayes, C.E., Souza, S.P., Mueller, O.M., 1990. The NMR phased array. Magn. Reson. Med. 16 (2), 192–225.
Salat,))

#_magnitude_biascor.nii.gz (bias field corrected magnitude using N4BiasFieldCorrection [Tustison NJ1, Avants BB, Cook PA, Zheng Y, Egan A, Yushkevich PA, Gee JC. N4ITK: improved N3 bias correction. IEEE Trans Med Imaging. 2010 Jun;29(6):1310-20. doi: 10.1109/TMI.2010.2046908. Epub 2010 Apr 8.])

#_phase_wrapped.nii.gz (combined raw phase images combined using the method suggested in Hammond, K.E., Lupo, J.M., Xu, D., Metcalf, M., Kelley, D.A.C., Pelletier, D., Chang, S.M., Mukherjee, P., Vigneron, D.B., Nelson, S.J., 2008. Development of a robust method for generating 7.0 T multichannel phase images of the brain with application to normal volunteers and patients with neurological diseases. Neuroimage 39 (4), 1682–1692.)

#_phase_unwrapped.nii.gz (unwrapped combined phase images using a method proposed in Abdul-Rahman, H.S., Gdeisat, M.A., Burton, D.R., Lalor, M.J., Lilley, F., Moore, C.J., 2007. Fast and robust three-dimensional best path phase unwrapping algorithm. Appl. Opt. 46 (26), 6623–6635.)