Multisection^W contrast PR+at rest+maximal sphincter contraction+during straining+during defecation:Find:Pt:Pelvis:Doc:MR
multisection^w contrast pr+at rest+maximal sphincter contraction+during straining+during defecation:find:pt:pelvis:doc:mr
MR Pelvis Defe W cntr PR
mr pelvis defe w cntr pr