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SIOPE - Brain tumor group consensus guideline on craniospinal target volume delineation for high-precision radiotherapy
Cambridge Univ Hosp, Dept Oncol, Cambridge, England.
Cambridge Univ Hosp, Dept Oncol, Cambridge, England.
Assistance Publ Hop Marseille, Dept Radiat Oncol, Marseille, France.
Clatterbridge Canc Ctr, Dept Oncol, Liverpool, Merseyside, England.
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2018 (English)In: Radiotherapy and Oncology, ISSN 0167-8140, E-ISSN 1879-0887, Vol. 128, no 2, p. 192-197Article in journal (Refereed) Published
Abstract [en]

Objective: To develop a consensus guideline for craniospinal target volume (TV) delineation in children and young adults participating in SIOPE studies in the era of high-precision radiotherapy. Methods and materials: During four consensus meetings (Cambridge, Essen, Liverpool, and Marseille), conventional field-based TV has been translated into image-guided high-precision craniospinal TV by a group of expert paediatric radiation oncologists and enhanced by MRI images of liquor distribution. Results: The CTVcranial should include the whole brain, cribriform plate, most inferior part of the temporal lobes, and the pituitary fossa. If the full length of both optic nerves is not included, the dose received by different volumes of optic nerve should be recorded to correlate with future patterns of relapse (no consensus). The CTVcranial should be modified to include the dural cuffs of cranial nerves as they pass through the skull base foramina. Attempts to spare the cochlea by excluding CSF within the internal auditory canal should be avoided. The CTVspinal should include the entire subarachnoid space, including nerve roots laterally. The lower limit of the spinal CTV is at the lower limit of the thecal sac, best visible on MRI scan. There is no need to include sacral root canals in the spinal CTV. Conclusion: This consensus guideline has the potential to improve consistency of craniospinal TV delineation in an era of high-precision radiotherapy. This proposal will be incorporated in the RTQA guidelines of future SIOPE-BTG trials using CSI.

Place, publisher, year, edition, pages
ELSEVIER IRELAND LTD , 2018. Vol. 128, no 2, p. 192-197
Keywords [en]
Clinical target volume, Delineation, Craniospinal radiotherapy, Guideline, CSI
National Category
Radiology, Nuclear Medicine and Medical Imaging
Identifiers
URN: urn:nbn:se:uu:diva-363061DOI: 10.1016/j.radonc.2018.04.016ISI: 000440972900002PubMedID: 29729847OAI: oai:DiVA.org:uu-363061DiVA, id: diva2:1256805
Available from: 2018-10-18 Created: 2018-10-18 Last updated: 2018-10-18Bibliographically approved

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