725 The Insensitivity of Sonography in the Detection of Choledocholithiasis. Einstein OM, Lapin SA, Rails PW, Ha//s JM 729 A Comparison of Computed Tomography and Sonography in Choledocholithiasis. Mitchell SE, Clark RA 735 Sonography and Computed Tomography in the Diagnosis of Carcinoma of the Gallbladder. Weiner SN, Koenigsberg M,