title: CT bronchoscopy: optimization of imaging parameters.
abstract: The authors evaluated the relative importance of the following scanning parameters at computed tomographic bronchoscopy in an anesthetized adult sheep's thorax: section thickness (2, 4, 8 mm), pitch (1.0, 1.5, 2.0), milliampere setting (100, 175, 250 mA), and overlap of reconstructed sections (0%, 25%, 50%, 75%). Five blinded readers ranked the images twice in comparison with photographs of the mounted specimen. Differences in image quality were significant (P < .001) with section thickness of 2 mm and a pitch of 1.0. The milliampere setting had only a minor effect on image quality, and a 50% overlap of reconstructed sections was best.
authors.affiliation: Department of Radiology, Penn State University, Hershey 17033-0850, USA.
authors.forename: K D
authors.initials: KD
authors.lastname: Hopper
authors.forename: T A
authors.initials: TA
authors.lastname: Iyriboz
authors.forename: R P
authors.initials: RP
authors.lastname: Mahraj
authors.forename: S W
authors.initials: SW
authors.lastname: Wise
authors.forename: C J
authors.initials: CJ
authors.lastname: Kasales
authors.forename: T R
authors.initials: TR
authors.lastname: TenHave
authors.forename: R P
authors.initials: RP
authors.lastname: Wilson
authors.forename: J S
authors.initials: JS
authors.lastname: Weaver
mesh_terms: D000818:Animals; D001999:Bronchoscopy; D003198:Computer Simulation; D012756:Sheep; D014057:Tomography, X-Ray Computed