Since 2012, radiologists and related professionals have celebrated the International Day of Radiology (IDoR 2021) on 8 November. The day coincides with the discovery of x-rays by Wilhelm Conrad Röntgen. The three founding societies chose the date: Radiological Society of North America (RSNA), the European Society of Radiology (ESR), and the American College of Radiology (ACR) at the RSNA meeting convened in Chicago.  This day succeeds the European Day of Radiology that was held once on 10 February 2011.

The day aims to promote the role of medical imaging in modern healthcare, awareness of the value that radiology contributes to safe patient care, and improve understanding of how radiologists and radiological technologists contribute to healthcare. A different theme focusing on a subspecialty is selected each year. 

This year, on the celebration’s tenth anniversary, the theme is ‘Interventional Radiology’ with the motto, ‘active care for the patient’. This theme is chosen in light of the healthcare challenges posed by the COVID-19 pandemic, to acknowledge the role imaging has in medicine, daily patient care, and combating the pandemic. Interventional radiology is a growing subspecialty that helps and protects patients.

Past years have concentrated on the following:

  • 2020: fighting the COVID-19 pandemic
  • 2019: sports imaging
  • 2018: cardiac imaging
  • 2017: emergency radiology
  • 2016: breast imaging
  • 2015: pediatric imaging
  • 2014: brain imaging
  • 2013: lung imaging
  • 2012: role of imaging in oncology


Bell DJ (2020) International Day of Radiology. Radiopaedia.  Available at:

European Society of Radiology (2021) International Day of Radiology 2021. Available at:

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X-ray, ESR, RSNA, International Day of Radiology, ACR 8 November is International Day of Radiology