1. Department of Medical Radiography and Radiological Sciences, Nnamdi Azikiwe University, Nnewi Campus, Anambra State, Nigeria;
2. Department of Radiology, Ebonyi State University Teaching Hosptial, Abakaliki, Ebonyi State, Nigeria;
3. Department of Physics (Medical Physics) Rivers State University of Science and Technology, Nkpolu, Portharcourt, Nigeria