Pion treatment procedures and verification techniques

Int J Radiat Oncol Biol Phys. 1984 May;10(5):723-35. doi: 10.1016/0360-3016(84)90303-1.


Procedures and techniques developed for the negative pi-meson (pion) radiotherapy program at the Los Alamos Meson Physics Facility, Los Alamos, NM, are reviewed and described. A particular pion patient is followed through the entire planning and treatment sequence to describe CT scanning procedures, bolus and collimator and treatment techniques developed to minimize positioning errors (less than 5 mm). Comparison of 2-D and 3-D isodose calculations developed at Los Alamos showed differences of less than 10% attributable to multiple scattering effects and the computational models used. Treatment verification methods using in vivo ion chamber dosimetry generally confirmed the prescribed dose delivery within 10% and using TLD within 18%.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Elementary Particles*
  • Female
  • Humans
  • Middle Aged
  • Neoplasms / radiotherapy*
  • Patient Care Planning / methods
  • Radiotherapy Dosage
  • Radiotherapy, High-Energy / methods*
  • Tomography, X-Ray Computed
  • Uterine Cervical Neoplasms / diagnostic imaging
  • Uterine Cervical Neoplasms / radiotherapy