RESULTS	Both Gadolinium injection and DWI significantly improved AUCs for residents but not for the senior radiologist : up to .988 ( R2 , P = 0.006 ) and to .98 ( R3 , P = 0.01 ) with DWI and to .96 ( R2 , P = 0.04 ) , .98 ( R3 , P = 0.01 ) after gadolinium .\