1. Radiological Science and Medical Imaging Department, Faculty of Applied Medical Sciences, Prince Sattam bin Abulaziz University (PSAU), Al-Kharj, Kingdom of Saudi Arabia
2. Medical Physics Department, Minia Oncology Center, Ministry of Health and Population, Al-Minia, Egypt
3. Physics Department, Faculty of Science, Mansoura University, Al-Mansoura, Egypt
4. Radiotherapy and Nuclear Medicine Department, National Cancer Institute (NCI), Cairo University, Cairo, Egypt
5. Ionizing Radiation Metrology Laboratory (IRML), National Institute of Standard (NIS), Giza, Egypt