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Reduced contrast medium in abdominal aorta CTA using a multiphasic injection technique

Wouter H Nijhof1, Charlotte S van der Vos, Bauke Anninga

  • 1University of Twente, MIRA-Institute for Biomedical Technology and Technical Medicine P.O. Box 21 7500 AE Enschede, The Netherlands. w.h.nijhof@student.utwente.nl

European Journal of Radiology
|October 31, 2012
PubMed

Insights

Multiphasic injection technique reduces contrast medium in abdominal CT angiography (CTA) by 11% without compromising image quality. This method offers comparable enhancement to standard protocols, optimizing contrast usage.

Area of Science:

  • Radiology
  • Medical Imaging

Background:

  • Abdominal computerized tomographic angiography (CTA) relies on contrast medium for visualization.
  • Optimizing contrast administration is crucial for patient safety and cost-effectiveness.

Purpose of the Study:

  • To evaluate if a multiphasic injection technique can decrease contrast medium volume in abdominal CTA.
  • To assess the impact of this technique on CT image quality.

Main Methods:

  • A comparative study involving 30 patients undergoing abdominal CTA.
  • Protocol I: Standard uniphasic injection (100mL Ioversol).
  • Protocol II: Multiphasic injection (89mL Ioversol).
  • Quantitative assessment of vascular enhancement and uniformity.
  • Qualitative assessment of image quality by three radiologists.

Main Results:

  • No significant difference in enhancement uniformity between uniphasic and multiphasic protocols.
  • Good to excellent image quality was achieved in 81.8% (protocol I) and 88.0% (protocol II) of scans.
  • Observed differences in image quality were not statistically significant.

Conclusions:

  • Multiphasic injection technique allows an 11% reduction in contrast medium for abdominal CTA.
  • This technique yields enhancement patterns comparable to the standard protocol.
  • The multiphasic approach is a viable alternative for contrast administration in abdominal CTA.
Abstract

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