Radiological aspects of CO2 peripheral DSA: Preliminary analysis on the dedicated protocols

Pier Luca Rossi; David Bianchini; Alessandro Lombi; Sonia Sapignoli; Manami Zanzi; Ivan Corazza

doi:10.4103/ijri.IJRI_247_20

Indian Journal of Radiology and Imaging, Table of Contents

CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2020; 30(03): 372-375
DOI: 10.4103/ijri.IJRI_247_20

Technical Notes

Radiological aspects of CO₂ peripheral DSA: Preliminary analysis on the dedicated protocols

Authors

Pier Luca Rossi

O.U. Medical Physics, University of Bologna, Viale Berti Pichat 6/2, 40124 Bologna

Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna
David Bianchini

O.U. Medical Physics, University of Bologna, Viale Berti Pichat 6/2, 40124 Bologna

Medical Physics Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori IRCCS, Meldola, FC, Italy
Alessandro Lombi

O.U. Medical Physics, University of Bologna, Viale Berti Pichat 6/2, 40124 Bologna

Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna
Sonia Sapignoli

Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna
Manami Zanzi

Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna
Ivan Corazza

Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna

Abstract

Objectives: Thanks to its lack of allergic reactions and renal toxicity, CO₂represents an alternative to iodine as a contrast medium for peripheral subtraction angiography. Since CO₂has a lower and negative contrast than iodine, postprocessing DSA and stacking are mandatory. So, it seems that higher doses than traditional iodine angiography are required. We addressed the dosimetric aspects of CO₂angiography for two different commercial DSA-apparatus. Materials and Methods: Two different radiological suites were analyzed by recreating the same setup on all the apparatuses: we used a PMMA slabs phantom with a MPD Barracuda dosimeter on its side to collect all radiological parameters. Results: Results show that the irradiation parameters were left completely unchanged between the traditional and CO₂angiographic programs. Conclusions: This leads to thinking that these CO₂protocols do not operate on the X-ray emission, but only differ on image manipulation. The possibility of improvements by changing radiological parameters are still not explored and really promising.

Keywords

Carbon dioxide contrast medium - digital subtraction angiography - X-ray spectrum

Full Text

References

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