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Whole brain radiation therapy traditional field borders and lateral DRR

Traditional field borders for whole brain radiation therapy (WBRT) consist of opposed lateral rectangular fields with the following borders encompassing the whole brain.

Direction Description
Superior
  • Overshoot the superior aspect of the skull with a minimum of 1 cm coverage. 
Inferior  
  • Mid-way through the frontal sinus extending to cover the bones of the base of the skull. 
  • Include spinous process of C1 and through spinous process of C2 to ensure the posterior fossa is covered.
Anterior
  • Overshoot the anterior aspect of the skull with a minimum of 1 cm coverage. 
Posterior
  • Overshoot the posterior aspect of the skull with a minimum of 1 cm coverage. 

Example WBRT lateral DRR image 

Image used with permission

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Version 3

Date Summary of changes
05/10/2020

Reviewed by Radiation Oncology Reference Committee on 06/08/2020. Related to protocol ID 1251 Palliative brain metastases EBRT whole brain. Review in 2 years.

Version 2

Date Summary of changes
31/05/2017

Transferred to new eviQ website. Version number change to V.2.
Previous website related protocol ID: 1251.

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https://www.eviq.org.au/p/3214

27 Feb 2021