CAX

CAX

1. (medical technology) Abbreviation of central axis.
   • 2003, Mutic et al.: PET-guided IMRT for cervical carcinoma with positive para-aortic lymph nodes—a dose-escalation treatment planning study, page 1:

     The treatment machine central axis (CAX) was placed at the level of the L4-L5 vertebral body interspace.

   • 2000, Kung et al.: A monitor unit verification calculation in intensity modulated radiotherapy as a dosimetry quality assurance, page 1:

     For dose calculation along a central axis (CAX), we first replace the incident IMRT fluence by an azimuthally averaged fluence.

   • 1999, Vincent et al.: An assessment of the number of CT slices necessary to plan breast radiotherapy, page 1:

     A separate optimized plan was generated using the CAX slice and two slices indicative of the upper and lower level of the field.

   • 1997, Lee: Monte Carlo simulations of the differential beam hardening effect of a flattening filter on a therapeutic x-ray beam, page 1:

     Compared to the unfiltered beam, the fluence-weighted photon energy of the filtered beam increases to 1.93 MeV at CAX and to 1.36 MeV at an OAD of 20.0 cm, respectively.