1. Drug Radiation Research Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
2. Radiation Biology Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic Energy Authority (EAEA), Cairo 11787, Egypt
3. Technology of Radiology and Medical Imaging, Faculty of Applied Medical Sciences, 6th of October University, Giza 12585, Egypt.