FIG 3.

Histograms taken from a single slice of the noise-only magnitude, real, and imaginary images. The complex data were obtained using a standard line scan sequence using a 0° flip angle of a cylindrical phantom. Each histogram represents 16,384 voxels. Both the real and the imaginary image data passed the Kolmogorov-Smirnov test for normality (P < 0.05). Note that the magnitude image data, unlike the original real and imaginary image data, have a different noise distribution, the Raleigh distribution.