title: [3D-MR-angiography using Gd-DTPA].
abstract: Projection angiograms similar to DSA can be obtained via 3D-gradient echo techniques by subtraction of data sets acquired before and after the intravenous administration of Gd-DTPA (0.1-0.2 mmol/kg body weight). As Gd-DTPA does not penetrate the blood-brain barrier, image subtraction results in complete cancellation of non vascular tissue. In organs without blood-brain barrier Gd-DTPA induced signal enhancement results in modest background superposition of vascular anatomy. With Gd-DTPA angiography vessels are imaged favouring the venous system because of the more constant flow velocity and the lack of ECG synchronization. Gd-DTPA angiography results in high signal-to-noise angiograms and can even be performed with MR imagers which do not meet the hardware requirements for angiography based on flow compensated gradients.
authors.affiliation: Radiologische Klinik, Klinikum Grosshadern, Ludwig-Maximilians-Universität München.
authors.forename: M
authors.initials: M
authors.lastname: Seiderer
authors.forename: W M
authors.initials: WM
authors.lastname: Bauer
authors.forename: A
authors.initials: A
authors.lastname: Villringer
authors.forename: K
authors.initials: K
authors.lastname: Einhäupl
mesh_terms: D001808:Blood Vessels / Q000033:anatomy & histology*; D003287:Contrast Media; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009942:Organometallic Compounds; D004369:Pentetic Acid
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA
vernacular_title: 3D-MR-Angiographie mit Gd-DTPA.