Development of a criterion for repositioning a relocatable stereotactic frame using depth helmet measurements

Radiother Oncol. 2001 Oct;61(1):45-8. doi: 10.1016/s0167-8140(01)00399-1.


Based on 95% confidence intervals in the normal distribution, a criterion was developed for a relocatable stereotactic frame depth helmet measurement. The method for obtaining such a criterion is described. The criterion states that, if more than two points deviate more than 1.5 mm the frame should be repositioned.

MeSH terms

  • Aged
  • Brain Neoplasms / radiotherapy
  • Brain Neoplasms / secondary
  • Female
  • Head Protective Devices
  • Humans
  • Male
  • Middle Aged
  • Radiosurgery / instrumentation*
  • Reproducibility of Results
  • Statistics, Nonparametric