An unusual visualization of the gallbladder by somatostatin receptor (SSTR) scintigraphy: usefulness of hepatobiliary imaging for differential diagnosis. - Kurtaran A; Ofluoglu S; Traub T; Tribl B; Speiser P; Grabenwöger F; Schima W; Dudczak R; Virgolini I (The American journal of gastroenterology, 2000)