title: Rib artifacts in electron beam tomography: incidence and severity without and with the cone beam reconstruction algorithm.
abstract: Electron beam tomography (EBT) may be compromised by rib artifacts. Two hundred forty-seven abdominal studies were performed without (Group A, n = 222) or with (Group B, n = 25) the cone beam algorithm. One hundred eighty-six (83.8%) and nine (36%) studies of Groups A and B, respectively, displayed some level of artifact. In Groups A and B, major, minor, and no artifacts were found in 115 (51.5%) and 0 (0%), 71 (32.3%) and 9 (36%), and 36 (16.2%) and 16 (64%) patients, respectively (p < 0.01). The cone beam algorithm improves EBT studies of the abdomen.
authors.affiliation: Institut für Radiologie, Charité, Humboldt-Universität zu Berlin, Germany. chrisitan.enzweiler@charite.de
authors.forename: C N
authors.initials: CN
authors.lastname: Enzweiler
authors.forename: M
authors.initials: M
authors.lastname: Taupitz
authors.forename: J
authors.initials: J
authors.lastname: Petersein
authors.forename: P F
authors.initials: PF
authors.lastname: SheedyI
authors.forename: J F
authors.initials: JF
authors.lastname: Breen
authors.forename: B
authors.initials: B
authors.lastname: Hamm
mesh_terms: D000465:Algorithms; D016477:Artifacts; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012272:Ribs / Q000000981:diagnostic imaging*; D018709:Statistics, Nonparametric; D014057:Tomography, X-Ray Computed / Q000379:methods*