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Cardiovascular MRI with ferumoxytol.

J P Finn1, K-L Nguyen2, F Han1

  • 1Diagnostic Cardiovascular Imaging Laboratory, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA; Department of Radiological Sciences, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.

Clinical Radiology
|May 26, 2016
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Summary
This summary is machine-generated.

Ferumoxytol, an iron-based nanoparticle, shows promise as a novel contrast agent for magnetic resonance angiography (MRA). Its unique properties offer a safer alternative to gadolinium-based agents, particularly for patients with kidney disease.

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Area of Science:

  • Radiology
  • Nanotechnology
  • Cardiovascular Imaging

Background:

  • Contrast-enhanced magnetic resonance angiography (CEMRA) practices have evolved due to safety concerns with gadolinium (Gd)-based contrast agents, particularly nephrogenic systemic fibrosis in renal impairment.
  • This has driven the development of low-dose CEMRA, non-contrast MRA, and alternative contrast agents.
  • Ferumoxytol, an ultra-small superparamagnetic iron oxide nanoparticle, is FDA-approved for anemia in renal disease and has gained interest as an MRI contrast agent.

Purpose of the Study:

  • To summarize cardiovascular applications and ongoing investigations of ferumoxytol as a magnetic resonance imaging (MRI) contrast agent.
  • To highlight ferumoxytol's potential as a game-changer in CEMRA and MRI.

Main Methods:

  • Review of clinical experience with cardiovascular applications of ferumoxytol.
  • Synopsis of ongoing research into ferumoxytol-enhanced MR applications.

Main Results:

  • Ferumoxytol possesses unique physicochemical and pharmacokinetic properties, including a long intravascular half-life and high r1 relaxivity.
  • These properties support a broad range of MRI applications, potentially exceeding those of Gd-based agents.
  • Iron, unlike Gd, is essential for human metabolism, and ferumoxytol's iron core is incorporated into the reticuloendothelial system after degradation.

Conclusions:

  • Ferumoxytol's safety profile and biological relevance position it as a significant advancement in CEMRA and MRI.
  • Its potential extends beyond current Gd-based contrast agent applications.
  • Further research into ferumoxytol-enhanced MR applications is warranted.