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. Author manuscript; available in PMC: 2007 Oct 24.
Published in final edited form as: Magn Reson Med. 2001 Aug;46(2):335–343. doi: 10.1002/mrm.1196

FIG. 2.

FIG. 2

Images of oil and water phantom: (a,b) images with off-resonance ghost artifacts using multishot EPI (ETL = 2) with noninterleaved phase encode acquisition order with individual coil images combined using (a) root sum of squares and (b) B1-weighted to optimize SNR, (c) reference image of oil and water phantom without ghost artifacts obtained using a single echo per shot (ETL = 1), (d,e) aligned images after phased array ghost cancellation processing weighted by point spread coefficients, h0(x,y) and h1(x,y), respectively, (f) ghost-cancelled image calculated using root sum of squares combining (ETL = 2), (g,h) images after SENSE processing weighted by DFT of point spread coefficients H0(x,y) and H1(x,y), respectively, (i) image from ETL = 2 interleaved acquisition with echo-shifting showing slight geometric distortion in the phase-encoding direction.