1 Cancer and Radiation Epidemiology Unit, Gertner Institute, Chaim Sheba Medical Center, Tel Hashomer, Israel. 2 Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. 3 Radiation Group, International Agency for Research on Cancer, Lyon, France. 4 Department of Otolaryngology–Head and Neck Surgery, Chaim Sheba Medical Center, Tel Hashomer, Israel. 5 Biostatistics Unit, Gertner Insti...

A quality assurance (QA) procedure was developed to evaluate the congruence between the cone-beam computed tomography (CBCT) image center and the radiation isocenter on a Varian Trilogy linac. In contrast to the published QA procedures, this method did not require a ball bearing (BB) phantom to be placed exactly at the radiation isocenter through precalibrated room lasers or light field crossha...

Background: Today, with the increasing use of ionizing radiation like X-rays in diagnosis and treatment of diseases, the risk of fetal exposure in pregnant women also increases. Therefore, protecting pregnant women from ionizing radiation is essential and is considered as the standard criterion for Medical Radiation Center. So the aim of this study was to investigate the observance of protectiv...

Introduction: Active personal dosimeters (APDs) are well accepted as useful and reliable instruments for individual dosimetry measurements. APDs have many advantages compared with passive dosimeters for individual external radiation dose assessments. In routine monitoring, occupational exposure is carried out for verification and demonstration of compliance with the regulatory dose limits. So, ...

Ontario Cancer Institute, University Health Network, Toronto, Ontario, Canada Division of Biostatistics, Princess Margaret Cancer Center, University Health Network Division of Signaling Biology, Ontario Cancer Institute Department of Pathology, University Health Network Department of Radiation Oncology; Princess Margaret Cancer Center, University Health Network Department of Radiation Oncology;...

introduction radioactive materials naturally exist in the world. indeed, approximately 82% of human-absorbed radiation doses, which are out of human control, arise from natural sources of radiation including cosmic, terrestrial, and exposure through inhalation or ingestion. thus, the aim of the present study was to estimate health risk, as well as the effective and organ doses from naturally oc...

7 1. Department of Thoracic Oncology and State Key Laboratory of 8 Biotherapy, Cancer Center, West China Hospital, Sichuan University, 9 Chengdu 610041, PR.China 10 2. Radiation Physics Center, Cancer Center, West China Hospital, 11 Sichuan University, Chengdu 610041, PR.China 12 3. Department of Radiation Oncology, The Second People’s Hospital of 13 Sichuan, Chengdu 610031, PR.China 14 4. Depa...

From the ‡Department of Molecular Medicine, Institute of Biotechnology, University of Texas Health Science Center, San Antonio, Texas 78245, Molecular and Cellular Biology Graduate Program, University of Maryland School of Medicine, Baltimore, Maryland 21201, the ‡‡Program in Molecular Biology, Sloan Kettering Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, and the ...

Introduction: Radiography plays an important role in the diagnosis of oral and dental disease and one of the most common diagnostic procedures in dentistry. Recent reports have raised concern about the increased use of ionizing radiation in dental imaging and the possibility of cancers. The effective dose of some dental radiographic examinations is high enough, so appropriate ...