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Updated: May 31, 2026

Whole-body PET/MRI of Pediatric Patients: The Details That Matter
Published on: December 19, 2017
Minimizing and communicating radiation risk in pediatric nuclear medicine
Frederic H Fahey1, S Ted Treves, S James Adelstein
1Division of Nuclear Medicine and Molecular Imaging, Children's Hospital Boston, Boston, Massachusetts 02115, USA. frederic.fahey@childrens.harvard.edu
Insights
Pediatric nuclear medicine requires understanding radiation dosimetry and risk. This review covers risk estimation, communication strategies, and dose reduction techniques for young patients undergoing medical imaging.
Area of Science:
- Medical Imaging
- Pediatric Nuclear Medicine
- Radiation Oncology
Background:
- Pediatric nuclear medicine is crucial across various specialties, including urology, oncology, and cardiology.
- Medical imaging radiation exposure is a growing concern, particularly for younger patients due to increased cancer risk.
- Effective communication of radiation risks to families is essential for informed consent and patient care.
Purpose of the Study:
- To review radiation dosimetry for radiopharmaceuticals and CT in pediatric nuclear medicine.
- To explain the scientific basis of radiation risk estimation in pediatric patients.
- To discuss strategies for communicating radiation risks and methods for dose reduction.
Main Methods:
- Review of current literature on radiation dosimetry for common pediatric nuclear medicine procedures.
- Analysis of radiation risk models applicable to pediatric populations.
- Exploration of communication techniques and dose optimization strategies.
Main Results:
- Dosimetry data for radiopharmaceuticals and integrated CT (PET/CT, SPECT/CT) are presented.
- The scientific principles underlying radiation risk assessment in children are detailed.
- Effective communication approaches and dose reduction techniques are outlined.
Conclusions:
- Practitioners must understand dosimetry and risk to communicate effectively with pediatric patients and families.
- This article provides a comprehensive overview of radiation safety in pediatric nuclear medicine.
- Implementing dose reduction strategies is vital for minimizing potential long-term risks.
Abstract:
The value of pediatric nuclear medicine is well established. Pediatric patients are referred to nuclear medicine from nearly all pediatric specialties including urology, oncology, cardiology, gastroenterology, and orthopedics. Radiation exposure is associated with a potential, small, risk of inducing cancer in the patient later in life and is higher in younger patients. Recently, there has been enhanced interest in exposure to radiation from medical imaging. Thus, it is incumbent on practitioners of pediatric nuclear medicine to have an understanding of dosimetry and radiation risk to communicate effectively with their patients and their families. This article reviews radiation dosimetry for radiopharmaceuticals and also CT given the recent proliferation of PET/CT and SPECT/CT. It also describes the scientific basis for radiation risk estimation in the context of pediatric nuclear medicine. Approaches for effective communication of risk to patients' families are discussed. Lastly, radiation dose reduction in pediatric nuclear medicine is explicated.
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