title: Vascular permeability: quantitative measurement with double-echo dynamic MR imaging--theory and clinical application.
abstract: Double-echo dynamic magnetic resonance (MR) imaging was used to evaluate both vascularity and permeability of tissues simultaneously. Vascularity was evaluated on the basis of the T2*-shortening effect due to the intravascular fraction of the contrast agent and permeability on the basis of the T1-shortening effect due to the extravascular fraction. Meningioma was characterized on the basis of higher vascularity and neurinoma on the basis of higher permeability. The proposed method enables better tissue characterization.
authors.affiliation: Department of Radiology, Fukui Medical University, Yoshida-gun, Japan. uematsu@fmsrsa.fukui-med.ac.jp
authors.forename: H
authors.initials: H
authors.lastname: Uematsu
authors.forename: M
authors.initials: M
authors.lastname: Maeda
authors.forename: N
authors.initials: N
authors.lastname: Sadato
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
authors.forename: Y
authors.initials: Y
authors.lastname: Ishimori
authors.forename: Y
authors.initials: Y
authors.lastname: Koshimoto
authors.forename: H
authors.initials: H
authors.lastname: Yamada
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: Y
authors.initials: Y
authors.lastname: Kawamura
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
authors.forename: N
authors.initials: N
authors.lastname: Hayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Yonekura
authors.forename: Y
authors.initials: Y
authors.lastname: Ishii
mesh_terms: D000328:Adult; D000368:Aged; D002199:Capillary Permeability / Q000502:physiology*; D003287:Contrast Media; D003937:Diagnosis, Differential; D017352:Echo-Planar Imaging; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008297:Male; D008577:Meningeal Neoplasms / Q000098:blood supply / Q000175:diagnosis; D008579:Meningioma / Q000098:blood supply / Q000175:diagnosis; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000098:blood supply / Q000175:diagnosis
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA