title: A phantom for facilitating in vitro computed tomographic studies of gallstones.
abstract: A phantom was designed and constructed for in vitro studies of gallstones using a computed tomographic (CT) scanner. A primary objective of the design was to permit studies of multiple gallstones in a single CT slice. This was accomplished by incorporating in the phantom removable compartments that contain vertically oriented, cone-shaped voids for holding the gallstones and surrounding fluid medium. A slice through the center of the phantom passes through the apex of each cone-shaped holder, and hence through the center of each gallstone. The main body of the phantom is made of water-mimicking plastic, and each compartment can accommodate gallstones ranging up to 3 cm in diameter. Initial experience with the phantom has shown it to be a successful design.
authors.affiliation: Department of Radiology, University of Washington School of Medicine, Seattle.
authors.forename: M M
authors.initials: MM
authors.lastname: Goodsitt
authors.forename: R L
authors.initials: RL
authors.lastname: Baron
mesh_terms: D002769:Cholelithiasis / Q000000981:diagnostic imaging*; D004867:Equipment Design; D006801:Humans; D066298:In Vitro Techniques; D008961:Models, Structural; D014057:Tomography, X-Ray Computed