Evaluation of Patient Radiation Dose During Computed Tomography Angiography

Abstract

Computed Tomography (CT) is a diagnostic imaging modality giving higher patient dose in comparison with other radiologic procedures, so the calculation of patient dose in CT exams is very important. CT improved many diagnoses of diseases. The increasing use of CT in Sudan in recent years is what has to think in the attempt to reduce the exposure of the patient and that the risks known to the X-ray. This study aimed to assess the radiation dose and estimating the risks resulting from exposure to X-rays during CT angiography (CTA). A total of 50 patients were examined in Royal Scan Diagnostic Center using spiral CT scans 64 slices (in the period September 2015-December 2015). The average age of the samples was (45.0±82.0) years. The mean effective dose per procedure was (51.6±15.3mSv), (31.5±10.0mSv), (74.5±16.8mSv) for the renal, coronary and lower limb respectively. Patients are exposed to a considerable dose during the procedures. Patient dose during limbs procedures are higher compared to the other two examinations.