The International Day of Radiology (IDoR) is an annual event promoting the role of medical imaging in modern healthcare. It is celebrated on November 8 each year and coincides with the anniversary of the discovery of x-rays. It was first introduced in 2012, as a joint initiative of the European Society of Radiology (ESR), the Radiological Society of North America (RSNA), and the American College of Radiology (ACR). The International Day of Radiology is acknowledged and celebrated by nearly 200 national, sub-speciality, and related societies around the world.
The International Day of Radiology is a successor to the European Day of Radiology which was launched in 2011. The first and only European Day of Radiology (EDoR) was held on February 10, 2011 to commemorate the anniversary of Röntgen’s death and was organised by the European Society of Radiology(ESR). Due to the success of the EDoR, the ESR entered into cooperation with the RSNA and the ACR to establish the International Day of Radiology. It was also decided that the date of the celebration should be moved from the anniversary of Röntgen’s death to that of his discovery of the x-ray. The day was officially confirmed by the three founding societies during the annual RSNA meeting in Chicago on November 28, 2011. On November 8, 1895 Wilhelm Conrad Röntgen discovered x-rays by chance while investigating cathode rays, effectively laying the foundation for the medical discipline of radiology. This discovery would grow to include various methods of imaging and establish itself as a crucial element of modern medicine. The 8 of November was eventually chosen as the appropriate day to mark the celebrations which are observed by radiological societies the world over.