title: Reply.
authors.affiliation: Department of Radiology Northwestern University Feinberg School of Medicine Chicago, Illinois.
authors.forename: M N
authors.initials: MN
authors.lastname: Rozenfeld
authors.affiliation: Department of Radiology Northwestern University Feinberg School of Medicine Chicago, Illinois.
authors.forename: S A
authors.initials: SA
authors.lastname: Ansari
authors.affiliation: Department of Radiology University of Miami Miami, Florida.
authors.forename: P
authors.initials: P
authors.lastname: Mohan
authors.affiliation: Department of Radiology Northwestern University Feinberg School of Medicine Chicago, Illinois.
authors.forename: A
authors.initials: A
authors.lastname: Shaibani
authors.affiliation: Department of Radiology Northwestern University Feinberg School of Medicine Chicago, Illinois.
authors.forename: E J
authors.initials: EJ
authors.lastname: Russell
authors.affiliation: Department of Radiology Northwestern University Feinberg School of Medicine Chicago, Illinois.
authors.forename: M C
authors.initials: MC
authors.lastname: Hurley