RADIATION EXPOSURE DURING CT USING STANDA RD AND SPIRAL TECHNIQUES

Comparison of the radiation exposure during CT quoted in the literatur e shows considerable variation; this depends on differences in apparat us, methods of examination and measurements. A systematic investigatio n into radiation dose during CT is therefore necessary to obtain accur ate radiation doses during various examinations in order to balance ri sks against usefulness. The present paper deals with the radiation dos e received by the patient during examinations of the cerebrum, neck, t horax, upper and lower abdomen and pelvis, using standard and spiral C T techniques. Organ doses for all organs at risk, surface dose, total body dose and dose profiles along the body axis for each type of exami nation have been established, which will allow the user to evaluate ra diation dose.