An Airway Phantom to Standardize CT Acquisition in Multicenter Clinical Trials

Center of Excellence for Pulmonary Biology, Division of Pediatric Pulmonary (T.E.R., P.R.), and the Department of Radiology (R.R.), Stanford University Medical Center, 770 Welch Road, Suite 350, Palo Alto, CA 94305-5715; the Department of Radiology, Nationwide Children's Hospital, Columbus, OH (F.R.L.); the Department of Biostatistics, University of Washington, and the Cystic Fibrosis Therapeutic Development Network, Seattle, WA (P.S., M.J.E.); the Department of Computer Engineering and Biomedical Engineering, University of Iowa, Iowa City, IA (J.M.R.); and the Department of Radiology, Cincinnati Children's Hospital, Cincinnati, OH (A.S.B.)

Received 31 October 2008; accepted 27 February 2009. published online 25 May 2009.

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