IOMP and IAEA have been working together on this project.

Please see following resources

Multinational Data on Cumulative Radiation Exposure of Patients from Recurrent Radiological Procedures: Call for Action

Overview: Patients undergoing recurrent CT scans: assessing the magnitude

Full text: Patients undergoing recurrent CT scans: assessing the magnitude

Overview: Patients undergoing recurrent CT exams: Assessment of patients with non-malignant diseases, reasons for imaging and imaging appropriateness

Full text: Patients undergoing recurrent CT exams: Assessment of patients with non-malignant diseases, reasons for imaging and imaging appropriateness

Is it possible to kill the radiation risk issue in computed tomography?

Patient doses from image-guided radiation therapy

CT is still not a low-dose imaging modality

Overview: Estimates of the number of patients with high cumulative doses through recurrent CT exams in 35 OECD countries

Multicentric study of patients receiving 50 or 100 mSv in a single day through CT imaging—frequency determination and imaging protocols involved