Objective: To simulate a computed tomography scanner using Monte Carlo code and validate it using standard dose measurements at the center and periphery of head and body phantom and to investigate the viability of gold foil as a dose enhancer in computed tomography scanning. Material and Methods: Head and body phantom of 16 cm and 32 cm diameter respectively with 16 cm length were used. A normalization factor to convert results to absolute dose values was obtained by simulations in air. The Monte Carlo N particle transport code was used to simulate standard dosimetric measurements. Results: Measured and calculated values agree within 6%, with minor adjustable exceptions. The validated model is in accordance with the measured data. Also, the radiation dose is boosted by 6% when we applied the gold foils.