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[MR lymphography: first application to human]

Y Okuhata1, T Xia, S Urahashi

  • 1Department of Radiology, Nihon University School of Medicine.

Nihon Igaku Hoshasen Gakkai Zasshi. Nippon Acta Radiologica
|April 25, 1994
PubMed
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This study introduces MR lymphography using cideferron, an iron colloid contrast agent. Results show reduced signal intensity in lymph nodes for three months, indicating potential clinical application.

Area of Science:

  • Medical Imaging
  • Radiology
  • Lymphatic System Imaging

Background:

  • Magnetic Resonance (MR) lymphography offers a non-invasive method for visualizing lymphatic pathways.
  • Iron colloids are being explored as contrast agents for enhanced MR imaging.

Purpose of the Study:

  • To evaluate the feasibility and safety of MR lymphography using cideferron in a clinical setting.
  • To assess the imaging characteristics and duration of effect of cideferron in human subjects.

Main Methods:

  • Two healthy volunteers underwent MR imaging of inguinal lymph nodes.
  • Cideferron, an iron colloid contrast agent, was administered via subcutaneous injection in the dorsal feet.
  • T2-weighted MR images were acquired before and at various time points after injection.

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Main Results:

  • A significant decrease in signal intensity of inguinal lymph nodes was observed on T2-weighted images within two hours post-injection.
  • This signal reduction persisted for up to three months.
  • Transient skin pigmentation at the injection site was noted, which resolved within six months.

Conclusions:

  • MR lymphography with cideferron is a potentially viable clinical tool for lymphatic imaging.
  • The iron colloid contrast agent demonstrates a prolonged effect on lymph node signal intensity.
  • Further studies are warranted to explore its diagnostic utility in various clinical conditions.