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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

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
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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


Publication History

Received: 12 April 2020

Accepted: 18 August 2020

Article published online:
19 July 2021

© 2020. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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