title: Spiral CT of the chest: comparison of cine and film-based viewing.
abstract: OBJECTIVE
  To determine radiologists' ability to find lung nodules on spiral computed tomographic (CT) scans of the chest with both rapid sequential (cine) and conventional film-based viewing.
  
  
  METHODS
  Eight radiologists searched for lung nodules on spiral CT images (10-mm collimation, 10 mm/sec table speed) presented in two formats. Cine viewing was performed at a computer work-station; sections were viewed in 2-mm increments at frame rates up to 10 frames per second. Film-based viewing of images from a laser printer was performed with a lightbox; sections were viewed at 4-mm increments. Eight 3-5-mm-diameter simulated nodules were superimposed on each of five normal CT scans.
  
  
  RESULTS
  Radiologists found a higher fraction of nodules with the cine presentation than with film (mean, 0.69 +/- 0.02 [standard error] versus 0.58 +/- 0.03, respectively [P = .006]). Diameter thresholds for nodule detection (50% correctly localized) were 3.3 and 3.5 mm, respectively.
  
  
  CONCLUSIONS
  Cine viewing of spiral CT images of the chest improved radiologists' ability to detect nodules.
authors.affiliation: Department of Radiology, Harvard Medical School, Brigham and Women's Hospital, Boston, MA 02115, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Seltzer
authors.forename: P F
authors.initials: PF
authors.lastname: Judy
authors.forename: D F
authors.initials: DF
authors.lastname: Adams
authors.forename: F L
authors.initials: FL
authors.lastname: Jacobson
authors.forename: P
authors.initials: P
authors.lastname: Stark
authors.forename: R
authors.initials: R
authors.lastname: Kikinis
authors.forename: R G
authors.initials: RG
authors.lastname: Swensson
authors.forename: S
authors.initials: S
authors.lastname: Hooton
authors.forename: B
authors.initials: B
authors.lastname: Head
authors.forename: U
authors.initials: U
authors.lastname: Feldman
mesh_terms: D006801:Humans; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods*