title: Ultrasound versus radionuclide imaging in the evaluation of patients with acute right-upper-quadrant pain.
mesh_terms: D002764:Cholecystitis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002769:Cholelithiasis / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D011877:Radionuclide Imaging; D014463:Ultrasonography