title: Reduction of truncation artifacts in rapid 3D articular cartilage imaging.
abstract: OBJECTIVE
  To reduce Gibbs ringing artifact in three-dimensional (3D) articular knee cartilage imaging with linear prediction (LP).
  
  
  METHODS
  A reconstruction method using LP in 3D was applied to truncated data sets of six healthy knees. The technique first linearizes the data before applying the prediction algorithm. Three radiologists blindly reviewed and ranked images of the full, truncated, and predicted data sets. Statistical analysis of the radiologists' reviews was performed for image quality, clinical acceptability of the images, and equivalence with the gold standard.
  
  
  RESULTS
  LP applied to 3D knee cartilage imaging allows for 40% decreased scan time while providing image quality with statistical equivalence to a full data set.
  
  
  CONCLUSIONS
  3D spoiled gradient echo imaging (SPGR) knee cartilage imaging requires significant scan time. This 40% reduction in scan time will allow such scans to be more feasible without sacrificing clinical acceptability.
authors.affiliation: Department of Radiology, School of Medicine, Stanford University, Stanford, California 94305-5488, USA. rakow@stanford.edu
authors.forename: Rebecca
authors.initials: R
authors.lastname: Rakow-Penner
authors.forename: Garry
authors.initials: G
authors.lastname: Gold
authors.forename: Bruce
authors.initials: B
authors.lastname: Daniel
authors.forename: Kate
authors.initials: K
authors.lastname: Stevens
authors.forename: Jarrett
authors.initials: J
authors.lastname: Rosenberg
authors.forename: Samuel
authors.initials: S
authors.lastname: Mazin
authors.forename: John
authors.initials: J
authors.lastname: Pauly
authors.forename: Gary H
authors.initials: GH
authors.lastname: Glover
mesh_terms: D000328:Adult; D016477:Artifacts; D002358:Cartilage, Articular / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007719:Knee Joint; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male