Abstract
Radiogenic risk from computed tomography (CT) is higher than conventional radiography. Dose measurement to assess the need for optimisation is required to ensure patient protection from avoidable exposure. The aim of this research is to quantify the radiation induced cancer risk from chest–abdomen–pelvis (CAP) CT investigations. A total of 35 CAP CT investigations were studied. The mean air kerma length product (P
KL,CT
) and volumetric CT air kerma index (C
vol
) were 740 (400.7–1100.0) mGy cm and 12.0 (8.1–17.0) mGy, respectively. The mean effective dose (mSv) was 11.8 (6.4–17.1) and the cancer risk was 1 per 1500 CAP CT procedures.