title: [Pitfalls when using a contrast media injector in MRI].
abstract: OBJECTIVE
  Using a power injector to applicate Gd-DTPA we found a contrast enhancement of the pyelo-caliceal system even in the native studies, and hence we analysed pitfalls when using power injectors in MRI.
  
  
  METHODS
  We used a power injector Spectris (MedRad, Maastricht, Netherlands). In vitro artifacts were achieved by the mixture of contrast media and saline solution. We substituted contrast media by red water, NaCl by clear water.
  
  
  RESULTS
  Using power injectors in MRI, some pitfalls must be avoided, which can render investigations useless, especially dynamic contrast-enhanced investigations.
  
  
  CONCLUSIONS
  In our study we showed an easy way to overcome some pitfalls and use a power injector in MRI in a diagnostically helpful way. The simple use of valves inhibits the mixture of contrast media and saline solution.
authors.affiliation: Abteilung für Strahlendiagnostik, Klinikum der Philipps-Universität, Marburg.
authors.forename: J T
authors.initials: JT
authors.lastname: Heverhagen
authors.forename: M
authors.initials: M
authors.lastname: Hoppe
authors.forename: N
authors.initials: N
authors.lastname: Ishaque
authors.forename: J J
authors.initials: JJ
authors.lastname: Froelich
authors.forename: K J
authors.initials: KJ
authors.lastname: Klose
mesh_terms: D003287:Contrast Media / Q000008:administration & dosage*; D004867:Equipment Design; D019786:Gadolinium DTPA / Q000008:administration & dosage*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA