Dose rate distribution calculation of elaborate head phantom for BNCT based on repeated structure card

Because of cursory character of the head geometry phantom which adopted in BNCT for glioma cure, filling the head by using Universe card and Fill card of MCNP code is performed, and subtle description of head phantom is accomplished in this paper. Then, dose distribution calculation in head injected with boron and without boron is implemented with fast, super-thermal and thermal neutrons respectively. Finally, the curve of dose rate and depth in head is acquired. The calculation result is consistent with the related reference report, which proves that elaborate head phantom constructed in this paper is correct. (authors)