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Planning target volume (PTV) margin practice patterns in adults and paediatrics among the Paediatric Radiation Oncology Society (PROS) members: an international survey

Published online by Cambridge University Press:  21 June 2018

Mohamed N. ElBeltagi ,
Verna Wall  and
Laure Marignol
Mohamed N. ElBeltagi*
Affiliation:
Radiation Oncology Department, St Luke’s Radiation Oncology Network, Dublin, Ireland/NCI Cairo University Egypt
Verna Wall
Affiliation:
Applied Radiation Therapy Trinity, Discipline of Radiation Therapy, Trinity College Dublin, Dublin, Ireland
Laure Marignol
Affiliation:
Discipline of Radiation Therapy, Trinity Centre for Health Sciences, St. James’s Hospital, Dublin, Ireland
*
Author for correspondence: Mohamed N. ElBeltagi, Consultant Radiation Oncology, St Luke’s Radiation Oncology Network, Rathgar D6, Dublin, Ireland. Tel: 003 531 406 5000. E-mail: Nazmy.elbeltagi@slh.ie
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Abstract

Aim

Evolving data are showing the need of considering smaller planning target volume (PTV) margin in paediatrics compared with adults treated for the same body site. This study proposed to evaluate the current patterns of practice regarding the PTV margin in paediatric patients compared with adult patients through an international survey.

Materials and methods

A four-item questionnaire was created to address the PTV margins for paediatrics and adults as part of a comprehensive survey. International Paediatric Radiation Oncology Society (PROS) members were selected to partake and were contacted via email.

Results

In total, 43 responded to the survey. The majority of the responders have written guidelines for PTV margin while the majority of those who have guidelines do not have separate guidelines for paediatrics. The implemented PTV margin for paediatric patients was in the majority 3–5 mm for the head region and 5–10 mm for the torso region and the difference from the PTV margin implemented in adults was not statistically significant.

Conclusion

The majority of responders employ a series of site-specific PTV margin protocols that are applied to both adults and paediatrics, and do not take into consideration patient age or size. These results highlight the need of a separate policy for PTV margin in adults and paediatrics in every institution.

Keywords

IGRTpaediatrics radiotherapyPTV
Type
Original Article
Information
Journal of Radiotherapy in Practice , Volume 17 , Issue 4 , December 2018 , pp. 368 - 372
Copyright
© Cambridge University Press 2018 

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