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Related Experiment Videos

A simple MR-compatible infusion pump

M R Prince1, D L Narasimham, F J Londy

  • 1Department of Radiology, University of Michigan, Ann Arbor 48109-0300, USA.

Magnetic Resonance Imaging
|January 1, 1996
PubMed
Summary
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A novel mechanical infusion pump uses a spring to control fluid delivery for enhanced medical imaging. This device precisely manages contrast agent flow for dynamic 3D MR angiography.

Area of Science:

  • Biomedical Engineering
  • Medical Imaging Physics

Background:

  • Accurate contrast agent delivery is crucial for dynamic imaging techniques.
  • Existing infusion pumps may have limitations in precision or mechanical simplicity for specific applications.

Purpose of the Study:

  • To describe a simple, mechanical infusion pump designed for controlled contrast agent delivery.
  • To evaluate its application in dynamic, gadolinium-enhanced 3D MR angiography.

Main Methods:

  • The pump utilizes a constant force, nonferromagnetic spring to compress a syringe.
  • Infusion rate is governed by spring force, fluid viscosity, and flow resistance (needle or orifice).
  • Governing principles include Poiseuille's Law and the Bernoulli effect for flow dynamics.

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Main Results:

  • A functional mechanical infusion pump was developed.
  • The pump demonstrated controllable contrast infusion rates based on physical parameters.
  • Successful application in dynamic, gadolinium-enhanced 3D MR angiography was shown.

Conclusions:

  • The described mechanical infusion pump offers a simple and effective method for precise contrast agent delivery.
  • This technology has potential utility in advanced medical imaging, particularly 3D MR angiography.