This study aimed to use OSL dosimeter to measure the radiation dose and dose distribution from CT scan. OSL nanoDot® were placed on eyes, thyroids, breasts and lower abdomen of Rando phantom to measure the equivalent dose. OSL InLight® were attached to the column placed around the CT couch to measure the radiation distribution. The results showed that lower abdomen received the highest radiation doses when examined with the whole abdomen protocol (58.18 mSv). The organs outside the primary beam such as breasts, thyroids, and eyes received the radiation dose of 39.5 mSv, 2.22 mSv, and 0.59 mSv, respectively. The radiation distribution from CT scan showed that the radiation dose around gantry area (0.87 mSv) was higher than the couch area (0.02 mSv). Moreover, the radiation scattering at thyroid level was higher than gonad level. Radiation protection and ALARA principle can be applied to patients, staffs, and patient’s relatives to prevent any radiation incident.