Indian Journal of Radiology Indian Journal of Radiology  

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TECHNICAL NOTES Table of Contents   
Year : 2020  |  Volume : 30  |  Issue : 3  |  Page : 372-375
Radiological aspects of CO2peripheral DSA: Preliminary analysis on the dedicated protocols


1 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, Italy
2 Medical Physics Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori IRCCS, Meldola, FC, Italy
3 Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna, Italy

Correspondence Address:
Dr. Ivan Corazza
Experimental, Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138 Bologna
Italy
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijri.IJRI_247_20

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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.


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