title: Reply.
authors.affiliation: Department of Radiology University of Pittsburgh Medical Center Pittsburgh, Pennsylvania.
authors.forename: G M
authors.initials: GM
authors.lastname: Lagemann
authors.affiliation: Department of Radiology University of Pittsburgh Medical Center Pittsburgh, Pennsylvania.
authors.forename: M P
authors.initials: MP
authors.lastname: Yannes
authors.affiliation: Department of Radiology University of Pittsburgh Medical Center Pittsburgh, Pennsylvania.
authors.forename: A
authors.initials: A
authors.lastname: Ghodadra
authors.affiliation: Department of Radiology University of Pittsburgh Medical Center Pittsburgh, Pennsylvania.
authors.forename: W E
authors.initials: WE
authors.lastname: Rothfus
authors.affiliation: Department of Radiology University of Pittsburgh Medical Center Pittsburgh, Pennsylvania.
authors.forename: V
authors.initials: V
authors.lastname: Agarwal