Second follow-up of a German cohort on childhood cancer incidence after exposure to postnatal diagnostic x-ray.
Studies on children exposed to ionizing radiation by computed tomography (CT) indicate an increased risk of leukemia and central nervous system (CNS) tumors. Evidence of the risks associated with diagnostic X-ray examinations, the most frequent examination in pediatric radiology, in which the radiation dose is up to 750 times lower compared to CT examinations, is less clear.a#13; This study presents results of the second follow-up for the risk of childhood cancer in a cohort of children (alt;15 years) with diagnostic X-ray exposure at a large German hospital during 1976-2003 followed for additional 10 years until 2016.a#13; With a latency period of six months, 92,998 children contributed 79…
Childhood Cancer Risk From Conventional Radiographic Examinations for Selected Referral Criteria: Results From a Large Cohort Study
OBJECTIVE: Little is known about the long-term effects of exposure to diagnostic ionizing radiation in childhood. Current estimates are made with models derived mainly from studies of atomic bomb survivors, a population that differs from today's patients in many respects. MATERIALS AND METHODS: We analyzed the cancer incidence among children who underwent diagnostic x-ray exposures between 1976 and 2003 in a large German university hospital. We reconstructed individual radiation doses for each examination and sorted results by groups of referral criteria for all cancers combined, solid tumors, and leukemia and lymphoma combined. RESULTS: A total of 68 incidence cancer cases between 1980…
A Cohort Study of Childhood Cancer Incidence after Postnatal Diagnostic X-Ray Exposure
Ionizing radiation is an established cause of cancer, yet little is known about the health effects of doses from diagnostic examinations in children. The risk of childhood cancer was studied in a cohort of 92.957 children who had been examined with diagnostic X rays in a large German hospital during 1976-2003. Radiation doses were reconstructed using the individual dose area product and other exposure parameters, together with conversion coefficients developed specifically for the medical devices and standards used at the radiology department. Newly diagnosed cancers occurring between 1980 and 2006 were determined through record linkage to the German Childhood Cancer Registry. The median ra…
Inzidenz von Kinderkrebs nach Röntgendiagnostik im Patientenkollektiv der Jahre 1976 – 2003 einer Universitäts-Kinderklinik
Purpose: Although the carcinogenic effect of ionizing radiation is well known, knowledge gaps persist on the health effects of low-dose radiation, especially in children. The cancer incidence rate in a cohort of 92,957 children diagnosed using X-rays in the years 1976-2003 in the radiology department of a large university clinic was studied. Materials and Methods: Individual radiation doses per examination were reconstructed using an algorithm taking into account the dose area product and other exposure parameters together with conversion factors computed specifically for the equipment and protocols used in the radiology department. Incident cancer cases in the period 1980-2006 were identif…