1 Sudan Atomic Energy Commission, Al Gamah Street, P. O. Box 3001, Khartoum, Sudan. azzasabo@hotmail.com.
2 Jaffar Bin Auf Paediatric Hospital, Hosptials Road, Khartoum, Sudan.
3 Radiology and Medical Imaging Department, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, P. O. Box 422, Alkharj, 11942, Saudi Arabia.
4 Nuclear Engineering Department, Faculty of Engineering, King Abdulaziz University, P. O. Box 80221, Jeddah, 21589, Saudi Arabia.
5 Sudan Atomic Energy Commission, Al Gamah Street, P. O. Box 3001, Khartoum, Sudan.
6 Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), P. O. Box 11642, Riyadh, Saudi Arabia.
7 Sudan Atomic Energy Commission, Al Gamah Street, P. O. Box 3001, Khartoum, Sudan. isamsalih@gmail.com.
8 Basic Science Department, Prince Sattam Bin Abdulaziz University, P. O. Box 422, Alkharj, 11942, Saudi Arabia. isamsalih@gmail.com.