Obstruction of the small intestine: accuracy and role of CT in diagnosis. - Maglinte,D.D.; Gage,S.N.; Harmon,B.H.; Kelvin,F.M.; Hage,J.P.; Chua,G.T.; Ng,A.C.; Graffis,R.F.; Chernish,S.M. (Radiology, 1993)