title: Tissue transition projection (TTP) of the intestines.
abstract: Tissue transition projection (TTP) represents a three-dimensional reconstruction technique for volumetric image data sets. To demonstrate the principle characteristics of TTP, a simple phantom consisting of two pipes with a simulated, wall-adherent polyp was scanned with spiral CT, and images were reconstructed by means of volume rendering for both opaque surface reconstructions and TTP. Tissue transition projection was used in 7 patients for reconstruction of the small intestine or the colon. Unlike three-dimensional reconstructions with opaque surfaces, TTP enhances surface transitions while suppressing homogeneous areas, allowing delineation of the bowel wall similar to conventional double-contrast studies.
authors.affiliation: Charité Hospital, Humboldt-Universität zu Berlin, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Rogalla
authors.forename: A
authors.initials: A
authors.lastname: Bender
authors.forename: U
authors.initials: U
authors.lastname: Bick
authors.forename: A
authors.initials: A
authors.lastname: Huitema
authors.forename: J
authors.initials: J
authors.lastname: Terwisscha van Scheltinga
authors.forename: B
authors.initials: B
authors.lastname: Hamm
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging; D000328:Adult; D003106:Colon / Q000000981:diagnostic imaging; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging; D003111:Colonic Polyps / Q000000981:diagnostic imaging; D003113:Colonoscopy; D003287:Contrast Media / Q000008:administration & dosage; D005471:Fluoroscopy; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007421:Intestine, Small / Q000000981:diagnostic imaging; D007422:Intestines / Q000000981:diagnostic imaging*; D008875:Middle Aged; D019047:Phantoms, Imaging; D011856:Radiographic Image Enhancement; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media