**Author details**

Abdelmoneim Sulieman1,2\* and Mohammed Alkhorayef3,4

\*Address all correspondence to: abdelmoneim\_a@yahoo.com and a.sulieman@psau.edu.sa

1 Department of Radiology and Medical Imaging, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia

2 Basic Science Department, College of Medical Radiologic Sciences, Sudan University of Science and Technology, Khartoum, Sudan

3 Department of Radiological Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia

4 Centre for Nuclear and Radiation Physics, Department of Physics, University of Surrey, Guildford, Surrey, UK
