# OnCo record idea-pu-contrast-switch-agent-after-reaction (idea). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/ideas/idea-pu-contrast-switch-agent-after-reaction/>
  a schema:CreativeWork ;
  onco:kind "idea" ;
  schema:identifier "idea-pu-contrast-switch-agent-after-reaction" ;
  schema:name "Switching to a different contrast agent, chosen by allergy testing, instead of steroid premedication after a reaction"@en ;
  schema:description "People who reacted to a contrast dye are often given steroid tablets before their next scan with the same dye. In a large study, people given a different dye had a repeat reaction in 3 per cent of scans, against 19 per cent with the same dye and steroids. European radiologists now recommend changing the dye, ideally after allergy testing, and say premedication has a narrow place."@en ;
  schema:url <https://onco.cc/ideas/idea-pu-contrast-switch-agent-after-reaction/> ;
  schema:dateModified "2026-11-11"^^xsd:date ;
  schema:citation <https://doi.org/10.1148/radiol.2021210490>, <https://doi.org/10.1007/s00330-025-11676-0>, <https://www.esur.org/wp-content/uploads/2026/10/Guidelines-2026.pdf> ;
  onco:tag "protocol-upgrade", "upgrade:promising", "evidence:moderate" ;
  onco:sections <https://onco.cc/fronts/imaging/> ;
  onco:technologies <https://onco.cc/technologies/iodinated-contrast-media/>, <https://onco.cc/technologies/ct/> ;
  onco:bottlenecks <https://onco.cc/bottlenecks/b-toxicity-qol/>, <https://onco.cc/bottlenecks/b-knowledge-diffusion/> .