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Radiotherapy Accident In Costa Rica
The radiotherapy accident in Costa Rica occurred within the Alcyon II radiotherapy unit at San Juan de Dios Hospital in San José, Costa Rica. It was related to a cobalt-60 source that was being used for radiotherapy in 1996. An accidental overexposure of radiotherapy patients treated during August and September 1996 was detected. During the calibration process done after the change of 60Co source on 22 August 1996, a mistake was made in calculating the dose rate, leading to severe overexposure of patients. The error of calibration was detected on 27 September 1996, after which treatments ceased. In the course of the accident, 115 patients received an overdose of radiation and 13 died of radiation-related injuries. The San Juan de Dios Hospital, located in Costa Rica, was one of the major medical facilities offering radiotherapy services in the country. In the mid-1990s, this facility introduced cobalt-60 therapy machines as a means of treating cancer. Radiotherapy is a critical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hospital San Juan De Dios
Hospital San Juan de Dios may refer to: *Hospital San Juan de Dios, Bogota, Colombia *San Juan de Dios Hospital (Santiago), Chile *A former hospital in Cúcuta, Colombia, now a library *Hospital San Juan de Dios, Pamplona, Colombia *, San José, Costa Rica See also * San Juan de Dios Hospital (Granada) * San Juan De Dios Hospital (Philippines) * St John of God Hospital (other) * San Juan de Dios Hospital (Peru) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teletherapy Capsule
External beam radiation therapy (EBRT) is a form of radiotherapy that utilizes a high-energy collimated beam of ionizing radiation, from a source outside the body, to target and kill cancer cells. The radiotherapy beam is composed of particles, which are focussed in a particular direction of travel using collimators. Each radiotherapy beam consists of one type of particle intended for use in treatment, though most beams contain some contamination by other particle types. Radiotherapy beams are classified by the particle they are intended to deliver, such as photons (as x-rays or gamma rays), electrons, and heavy ions; x-rays and electron beams are by far the most widely used sources for external beam radiotherapy. Orthovoltage ("superficial") X-rays are used for treating skin cancer and superficial structures. Megavoltage X-rays are used to treat deep-seated tumors (e.g. bladder, bowel, prostate, lung, or brain), whereas megavoltage electron beams are typically used to treat s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiotherapy
Radiation therapy or radiotherapy (RT, RTx, or XRT) is a treatment using ionizing radiation, generally provided as part of cancer therapy to either kill or control the growth of malignant cells. It is normally delivered by a linear particle accelerator. Radiation therapy may be curative in a number of types of cancer if they are localized to one area of the body, and have not spread to other parts. It may also be used as part of adjuvant therapy, to prevent tumor recurrence after surgery to remove a primary malignant tumor (for example, early stages of breast cancer). Radiation therapy is synergistic with chemotherapy, and has been used before, during, and after chemotherapy in susceptible cancers. The subspecialty of oncology concerned with radiotherapy is called radiation oncology. A physician who practices in this subspecialty is a radiation oncologist. Radiation therapy is commonly applied to the cancerous tumor because of its ability to control cell growth. Ionizin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San José, Costa Rica
San José (; meaning "Saint Joseph") is the capital city, capital and largest city of Costa Rica, and the capital of San José Province. It is in the center of the country, in the mid-west of the Costa Rican Central Valley, Central Valley, within San José Canton. San José is Costa Rica's seat of national government, focal point of political and economic activity, and major transportation hub. San José is simultaneously one of Costa Rica's Cantons of Costa Rica, cantons, with its municipal land area covering 44.62 square kilometers (17.23 square miles) and having within it an estimated population of people in 2022. Together with several other cantons of the central valley, including Alajuela, Heredia, Costa Rica, Heredia and Cartago, Costa Rica, Cartago, it forms the country's Greater Metropolitan Area (Costa Rica), Greater Metropolitan Area, with an estimated population of over 2 million in 2017. The city is named in honor of Saint Joseph, Joseph of Nazareth. Founded in 17 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cobalt-60
Cobalt-60 (Co) is a synthetic radioactive isotope of cobalt with a half-life of 5.2714 years. It is produced artificially in nuclear reactors. Deliberate industrial production depends on neutron activation of bulk samples of the monoisotopic and mononuclidic cobalt isotope . (PDF also located aCanadian Nuclear FAQ Measurable quantities are also produced as a by-product of typical nuclear power plant operation and may be detected externally when leaks occur. In the latter case (in the absence of added cobalt) the incidentally produced is largely the result of multiple stages of neutron activation of iron isotopes in the reactor's steel structures via the creation of its precursor. The simplest case of the latter would result from the activation of . undergoes beta decay to an excited state of the stable isotope nickel-60 (), which then emits two gamma rays with energies of and . The overall equation of the nuclear reaction (activation and decay) is: + n → → + e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culpable Homicide
Culpable homicide is a categorisation of certain offences in various jurisdictions within the Commonwealth of Nations which involves the homicide (illegal killing of a person) either with or without an intention to kill depending upon how a particular jurisdiction has defined the offence. Unusually for those legal systems which have originated or been influenced during rule by the United Kingdom, the name of the offence associates with Scots law rather than English law. Jurisdictions "Culpable homicide" offences are found in the following jurisdictions; the description of the local version of the offence is given where available: Canada In Canada, "culpable homicide" is not itself an offence. Rather, the term is used in the Criminal Code to classify all killings of persons as either culpable or not culpable homicide. There are three types of culpable homicide: murder, manslaughter and infanticide. Killings classified as not culpable are justifiable killings; thus the term i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Civilian Radiation Accidents
This article lists notable civilian accidents involving radioactive materials or involving ionizing radiation from artificial sources such as x-ray tubes and particle accelerators. Accidents related to nuclear power that involve fissile materials are listed at '' List of civilian nuclear accidents''. Military accidents are listed at '' List of military nuclear accidents''. Scope of this article In listing civilian radiation accidents, the following criteria have been followed: # There must be well-attested and substantial health damage, property damage or contamination. # The damage must be related directly to radioactive materials or ionizing radiation from a man-made source, not merely taking place at a facility where such are being used. # To qualify as "civilian", the operation or material must be principally for non-military purposes. # The event is not an event involving fissile material or a nuclear reactor. Before 1950s * Clarence Madison Dally (1865–1904) – No INE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goiânia Accident
The Goiânia accident was a radioactive contamination accident that occurred on September 13, 1987, in Goiânia, Goiás, Brazil, after an unsecured radiation therapy, radiotherapy source was stolen from an abandoned hospital site in the city. It was subsequently handled by many people, resulting in four deaths. About 112,000 people were examined for radioactive contamination and 249 of them were found to have been contaminated. In the consequent cleanup operation, topsoil had to be removed from several sites, and several houses were demolished. All the objects from within those houses, including personal possessions, were seized and incinerated. Time (magazine), ''Time'' magazine has identified the accident as one of the world's "worst Nuclear and radiation accidents and incidents, nuclear disasters" and the International Atomic Energy Agency (IAEA) called it "one of the world's worst radiological incidents". The source The radiation source in the Goiânia accident was a s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1962 Mexico City Radiation Accident
Year 196 ( CXCVI) was a leap year starting on Thursday of the Julian calendar. At the time, it was known as the Year of the Consulship of Dexter and Messalla (or, less frequently, year 949 ''Ab urbe condita''). The denomination 196 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Emperor Septimius Severus attempts to assassinate Clodius Albinus but fails, causing Albinus to retaliate militarily. * Emperor Septimius Severus captures and sacks Byzantium; the city is rebuilt and regains its previous prosperity. * In order to assure the support of the Roman legion in Germany on his march to Rome, Clodius Albinus is declared Augustus by his army while crossing Gaul. * Hadrian's wall in Britain is partially destroyed. China * First year of the Jian'an Era, during the reign of the Xian Emperor of the Han. * The Xian Emperor returns to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiotherapy Accident In Zaragoza
The 1990 Clinic of Zaragoza radiotherapy accident was a radiological accident that occurred from 10 to 20 December 1990, at University Clinic Hospital Lozano Blesa of Zaragoza, in Aragon, Spain. In the accident, at least 27 patients were injured, and 11 of them died due to the overexposure, according to the International Atomic Energy Agency (IAEA). All of the injured were cancer patients receiving external beam radiotherapy. Chronology On 7 December 1990, a technician performed maintenance on an electron accelerator at the Clinic of Zaragoza. On 10 December, it returned to service after the repairs. Affected patients immediately suffered burns on the skin of the irradiated area, as well as inflammation of the internal organs and bone marrow. The first overexposed patient died on 16 February 1991, two months after irradiation. Fatalities increased until, on 25 December 1991, the last of a total of 25 patients died. The IAEA established that 11 of the deaths were due to the fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X-ray
An X-ray (also known in many languages as Röntgen radiation) is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays. Roughly, X-rays have a wavelength ranging from 10 Nanometre, nanometers to 10 Picometre, picometers, corresponding to frequency, frequencies in the range of 30 Hertz, petahertz to 30 Hertz, exahertz ( to ) and photon energies in the range of 100 electronvolt, eV to 100 keV, respectively. X-rays were discovered in 1895 in science, 1895 by the German scientist Wilhelm Röntgen, Wilhelm Conrad Röntgen, who named it ''X-radiation'' to signify an unknown type of radiation.Novelline, Robert (1997). ''Squire's Fundamentals of Radiology''. Harvard University Press. 5th edition. . X-rays can penetrate many solid substances such as construction materials and living tissue, so X-ray radiography is widely used in medical diagnostics (e.g., checking for Bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Safety
Nuclear safety is defined by the International Atomic Energy Agency (IAEA) as "The achievement of proper operating conditions, prevention of accidents or mitigation of accident consequences, resulting in protection of workers, the public and the environment from undue Ionizing radiation, radiation hazards". The IAEA defines nuclear security as "The prevention and detection of and response to, theft, sabotage, unauthorized access, illegal transfer or other malicious acts involving nuclear materials, other radioactive substances or their associated facilities". This covers nuclear power plants and all other nuclear facilities, the transportation of nuclear materials, and the use and storage of nuclear materials for medical, power, industry, and military uses. The Nuclear power, nuclear power industry has improved the safety and performance of Nuclear reactor, reactors, and has proposed new and safer reactor designs. However, a perfect safety cannot be guaranteed. Potential sources ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
