Abstract:
Background: Computer Tomography (CT) scan utilizes ionizing radiation that has been established as risk
factors for development of cancer. However, patients’ knowledge of these risks is not well documented and
especially in Kenya. Objective: To establish patients’ awareness on ionizing radiation exposure and the risks
associated with repeated CT scan examination. Methods: A prospective study carried out in Moi Teaching and
Referral Hospital (MTRH). It was descriptive cross-sectional study. Convenient sampling method was used to
get a sample size was 120 patients. The data was collected using structured questionnaires and analysed. The
study was conducted between April and June 2019. Results: A total of 120 participants were recruited into the
study of which 60% were male and 40% female. Majority (38%) had secondary level of education. Overall, 18%
were familiar with the term ionizing radiation, 14% knew that CT scan uses ionizing radiation but only 2% were
aware that CT scan emits higher ionizing radiation as compared to the general X-rays. At the same time, 65%
knew that ionizing radiation posed greater risk to pregnant women. In addition, 10% were aware of the
relationship between ionizing radiation exposure and development of cancer. Separately, 63% were aware and
observed some of the safety practices in a CT scan unit. Conclusion: Majority of the patients seen at the MTRH
CT scan unit did not demonstrate an understanding of the concept of ionizing radiation exposure and the risk
associated with multiple CT scans examinations.
