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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

Summary

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.

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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.