title: Calculation of flow velocities from the geometrical shape of contrast agent-induced time-density curves using DSA.
abstract: A method for the calculation of flow velocities in vessels is introduced. The method is validated by measurements with an artificial model. Measurements with the carrier fluids sodium chloride solution and human blood using various scattering objects, show good correlation (r greater than +0.9) of the calculated and volumetrically measured velocities. With a menu-oriented computer program, measurement of flow velocities on DSA series can be made following the routine clinical examination.
authors.affiliation: Institut für Röntgendiagnostik, Universität Würzburg.
authors.forename: W
authors.initials: W
authors.lastname: Dölken
authors.forename: P
authors.initials: P
authors.lastname: Landwehr
authors.forename: E F
authors.initials: EF
authors.lastname: Frank
authors.forename: K
authors.initials: K
authors.lastname: Lackner
mesh_terms: D000792:Angiography; D001783:Blood Flow Velocity; D003287:Contrast Media; D003627:Data Interpretation, Statistical; D008955:Models, Cardiovascular; D012044:Regression Analysis; D012965:Sodium Chloride; D012996:Solutions; D013382:Subtraction Technique
chemical_list: D003287:Contrast Media; D012996:Solutions; D012965:Sodium Chloride