We applied the bioheat transfer (FEM) equation to the analysis of intracranial temperature distributions. The brain was isothermal at steady state, for perfusion rates of 1.0 and 0.1 ml/gm/min but not at 0.01 ml/gm/min. The largest temperature gradients were observed in the naso-pharyngeal (N-P) region. Altering surface heat transfer coefficient had little influence on brain temperature, even in regions of surgical exposure. Transient analysis demonstrated prompt reductions in cerebral temperature, with slower fall in N-P temperature. Maintaining normal tissue perfusion throughout the cooling period ensures uniform temperature within the cerebral tissues and avoids inadequate local cooling arising out of ischemic insult.