Patients undergoing recurrent CT scans: assessing the magnitude

@article{Rehani2019PatientsUR,
  title={Patients undergoing recurrent CT scans: assessing the magnitude},
  author={Madan M. Rehani and Kai Yang and Emily R. Melick and John Heil and Du{\vs}an {\vS}al{\'a}t and William F. Sensakovic and Bob Liu},
  journal={European Radiology},
  year={2019},
  volume={30},
  pages={1828-1836}
}
Objectives To assess percent of patients undergoing multiple CT exams that leads to cumulative effective dose (CED) of ≥ 100 mSv and determine their age distribution. Methods Data was retrieved retrospectively from established radiation dose monitoring systems by setting the threshold value of 100 mSv at four institutions covering 324 hospitals. The number of patients with CED ≥ 100 mSv only from recurrent CT exams during a feasible time period between 1 and 5 years was identified. Age and… 

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...

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To determine percent of patients without malignancy and ≤ 40 years of age with high cumulative radiation doses through recurrent CT exams and assess imaging appropriateness, a cohort of patients who received cumulative effective dose over a 5-year period was identified.

Multinational data on cumulative radiation exposure of patients from recurrent radiological procedures: call for action

There is a need for urgent actions by all stakeholders to address the issue of high cumulative radiation doses to patients, including development of appropriateness criteria/referral guidelines by professional societies for patients who require recurrent imaging studies, development of CT machines with lower radiation dose by manufacturers, and development of policies by risk management organizations to enhance patient radiation safety.

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