A technique for determining pump injector settings for an on-table CT or 3D DSA in interventional radiology
1Department of Interventional Radiology, Manchester Royal Infirmary, Manchester, UK.
Introduction:
On-Table computed tomography (CT) or 3D digital subtraction angiography (DSA) in interventional radiology (IR) has become a valuable diagnostic tool.
Methods:
A review of the literature found a poor evidential base supporting the technical parameters for iodinated contrast delivery during these acquisition sequences.
Results And Conclusion:
This technical note presents an easy method of estimating the parameters needed to reliably obtain diagnostic on-table CT or 3D DSA images, whilst attempting minimising contrast dose.
Implications For Practice:
A systematic approach to estimating contrast delivery regimes during on-table CT and 3D DSA can help ensure diagnostic quality images are obtained. Further clinical studies are now required to rigorously evaluate this protocol.
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