title: A simple MR-compatible infusion pump.
abstract: A simple, mechanical infusion pump that employs a constant force, nonferromagnetic spring to squeeze a syringe is described. The contrast infusion rate is determined by the spring force, gadolinium solution viscosity, and the resistance of either a user-selected needle or a precision oriffice according to Poiseuille's Law or the Bernoulli effect. Its use in dynamic, gadolinium-enhanced 3D MR angiography is described.
authors.affiliation: Department of Radiology, University of Michigan, Ann Arbor 48109-0300, USA.
authors.forename: M R
authors.initials: MR
authors.lastname: Prince
authors.forename: D L
authors.initials: DL
authors.lastname: Narasimham
authors.forename: F J
authors.initials: FJ
authors.lastname: Londy
authors.forename: T
authors.initials: T
authors.lastname: Pfammatter
authors.forename: R
authors.initials: R
authors.lastname: Akhavan
mesh_terms: D003287:Contrast Media / Q000008:administration & dosage*; D004867:Equipment Design; D005682:Gadolinium / Q000008:administration & dosage; D006801:Humans; D007260:Infusion Pumps; D018810:Magnetic Resonance Angiography / Q000295:instrumentation*; D019047:Phantoms, Imaging
chemical_list: D003287:Contrast Media; D005682:Gadolinium