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Pediatric Radiology
Published in: Pediatric Radiology 13/2017

01-12-2017 | Original Article

Long-term effects of radiation therapy on white matter of the corpus callosum: a diffusion tensor imaging study in children

Authors: Monwabisi Makola, M. Douglas Ris, E. Mark Mahone, Keith Owen Yeates, Kim M. Cecil

Published in: Pediatric Radiology | Issue 13/2017

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Abstract

Background

Despite improving survival rates, children are at risk for long-term cognitive and behavioral difficulties following the diagnosis and treatment of a brain tumor. Surgery, chemotherapy and radiation therapy have all been shown to impact the developing brain, especially the white matter.

Objective

The purpose of this study was to determine the long-term effects of radiation therapy on white matter integrity, as measured by diffusion tensor imaging, in pediatric brain tumor patients 2 years after the end of radiation treatment, while controlling for surgical interventions.

Materials and methods

We evaluated diffusion tensor imaging performed at two time points: a baseline 3 to 12 months after surgery and a follow-up approximately 2 years later in pediatric brain tumor patients. A region of interest analysis was performed within three regions of the corpus callosum. Diffusion tensor metrics were determined for participants (n=22) who underwent surgical tumor resection and radiation therapy and demographically matched with participants (n=22) who received surgical tumor resection only.

Results

Analysis revealed that 2 years after treatment, the radiation treated group exhibited significantly lower fractional anisotropy and significantly higher radial diffusivity within the body of the corpus callosum compared to the group that did not receive radiation.

Conclusion

The findings indicate that pediatric brain tumor patients treated with radiation therapy may be at greater risk of experiencing long-term damage to the body of the corpus callosum than those treated with surgery alone.
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Metadata
Title
Long-term effects of radiation therapy on white matter of the corpus callosum: a diffusion tensor imaging study in children
Authors
Monwabisi Makola
M. Douglas Ris
E. Mark Mahone
Keith Owen Yeates
Kim M. Cecil
Publication date
01-12-2017
Publisher
Springer Berlin Heidelberg
Published in
Pediatric Radiology / Issue 13/2017
Print ISSN: 0301-0449
Electronic ISSN: 1432-1998
DOI
https://doi.org/10.1007/s00247-017-3955-1

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