Computers are increasingly being introduced into safety-critical systems and, as a consequence, have been involved in accidents. Some of the most widely cited software-related accidents in safety-critical systems involved a computerized radiation therapy machine called the Therac-25. Between June 1985 and January 1987, six known accidents involved massive overdoses by the Therac-25 -with result...

Background and Objective: Non-ionized radiation from arc welding may cause retinal lesions such as photo retinitis. In this report, a patient with bilateral macular bleeding which had been caused by inappropriate use of protective safety glasses is introduced. Case Report: On 26 July 2008 a 23-year-old male with blurred vision was referred to Shahid Beheshti's faculty of Rehabilitation Clinic....

A normally functioning hip joint is imperative for athletes who use their lower extremities with running, jumping, or kicking activities. Sports-related injuries of the hip and groin are far less frequent than injuries to the more distal aspect of the extremity, accounting for less than 10% of lower extremity injuries. Despite the lower incidence, hip and groin injuries can lead to significant ...

Concerns about ionizing radiation during interventional cardiology have been increased in recent years as a result of rapid growth in interventional procedure volumes and the high radiation doses associated with some procedures. Noncancer radiation risks to cardiologists and medical staff in terms of radiation-induced cataracts and skin injuries for patients appear clear potential consequences ...

Exposure to high doses of radiation causes serious injuries in gastrointestinal tract, by affecting biomolecules of the tissue. To demonstrate the modulation of intestinal proteome by ionising radiations, we analysed changes in protein expression in 9 Gy irradiated C57BL/6 mice at 24 h and 72 h by using two dimensional electrophoresis technique. A total of 19 protein spots with statistical sign...

In the second of 5 articles on the management of injuries and illnesses caused by ionizing radiation, the authors discuss nontherapeutic radiologic/nuclear incidents: use of a radiologic exposure device, use of a radiologic dispersal device, nuclear power plant safety failure, and detonation of an improvised nuclear device. The present article focuses on how such incidents--whether involving de...

Developing a mass-casualty medical response to the detonation of an improvised nuclear device (IND) or large radiological dispersal device (RDD) requires unique advanced planning due to the potential magnitude of the event, lack of warning, and radiation hazards. In order for medical care and resources to be collocated and matched to the requirements, a [US] Federal interagency medical response...

On September 2, 1982, a 64-year-old man accidently received a heavy dose of gamma radiation in a plant for sterilization by radiation. He developed an acute radiation syndrome. The leukocyte count rapidly diminished to low values, and extensive chromosome injuries could be demonstrated in cultured lymphocytes. He was hospitalized in an isolated room, and received large doses of antibiotics, and...

radiation-free and non-invasive and can almost replace radiography as the preoperative screening tool for diagnosing shoulder injuries, although its diagnostic value for various pathologies has to be appreciated separately from radiography. Nonetheless, a comprehensive clinical evaluation should always be the first step of any diagnostic workup. MRI is useful in detecting muscle and tendon inju...