Therac 25 放射治疗仪

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August undefined, 2024

http://www.inf.fu-berlin.de/inst/ag-se/teaching/V-AWS-2011/22_Sicherheit.pdf Webb6 dec. 2024 · 축소. 확대. # 상황1. 지난 1985년 캐나다의 의료기업체인 AECL이 암 종양 제거를 위한 방사선 치료기인 ‘테락 25 (Therac 25)’를 개발하여 상용화에 나섰다. 강한 방사선을 안전하게 제어할 수 있는 장치를 SW로 조종할 수 있도록 개발한 의료기였다. 하지만 SW 오류로 ...

Therac-25 – Wikipedia

Webb30 sep. 2024 · The Therac-25 could treat cancer in two main ways. In electron mode, it would deliver a more spread out beam of radiation to target shallow cancers like skin cancer. In photon mode, the radiation... WebbAn Investigation of the Therac-25 Accidents Nancy Leveson, University of Washington Clark S. Turner, University of California, Irvine Reprinted with permission, IEEE Computer, Vol. 26, No. 7, July 1993, pp. 18-41. Computers are increasingly being introduced into safety-critical systems and, as a consequence, have been involved in accidents. city hall alachua fl

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WebbA widely cited 1993 Computer article described failures in a software-controlled radiation machine that massively overdosed six people in the late 1980s, resulting in serious injury … WebbTherac-25 放射治疗仪的一个编程问题导致了4个人的死亡。 A programmer error in the Therac-25 radiation therapy device resulted in the death of four people. general - … Webb上面就是Therac-25，它是一台于1985年制造的放疗设备，一台用来给癌症病人做放射性治疗的设备。由加拿大原子能公司（AECL）制造。它核心的软件程序是用来控制放疗的辐 … did anonymous hack russian state tv

The deadly case of the Therac-25: a warning for medical AI

Webb8 maj 2024 · Therac-25: the killer radiation machine. In 1982 a machine called Therac-25 created by the Atomic Energy of Canada Limited (AECL) appeared in the medical field for cancer treatments, using radiation and x-rays. This machine was an improvement of the Therac-20 and cost approximately 1 million dollars. The machine worked well in most of … WebbTherac-25 – stosowana w latach 80. maszyna do radioterapii nowotworów; były one produkowane przez Atomic Energy of Canada Limited przy współpracy z francuską firmą CGR. W latach 1985-1987, na skutek poważnych błędów w oprogramowaniu sterującym, urządzenia te były przyczyną przynajmniej sześciu wypadków, podczas których pacjenci … did anonymous hack russian defenseWebb4 aug. 2024 · 2. Therac-25. Therac-25 adalah alat pengolah radiasi yang dapat digunakan untuk pengobatan pasien yang terkena penyakit kanker. Namun, perangkat lunak yang digunakan pada alat ini mengalami bug yang serius. Alat tersebut gagal berfungsi, bug pada software ini menyebabkan dosis radiasi yang meningkat hingga 10 kali lebih tinggi. city hall ala moana

"WebbTherac-25 es una máquina de radioterapia producida por Atomic Energy of Canada Limited. Debido a fallas en el diseño de su software, exceder fatalmente el ajuste de la dosis resultó en la muerte de un paciente o quemaduras graves por radiación en seis incidentes médicos conocidos entre junio de 1985 y enero de 1987. " - Therac 25 放射治疗仪

Therac 25 放射治疗仪

Webb20 juni 1986 · TYLER, Texas (AP) _ Two cancer treatment machines of the same model malfunctioned in Texas and Georgia, exposing three patients to excessive radiation last spring and killing one of them, officials disclosed. Two of the malfunctions in the Therac 25 linear equipment occurred at the East Texas Cancer Center in March and April, said … WebbTherac-25 (с англ. — «Терак-25») — аппарат лучевой терапии, медицинский ускоритель, созданный канадской государственной организацией « Atomic Energy of Canada Limited [en] » (далее AECL) и запущенный в серию в 1982 году.

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WebbTherac-25. Therac-25 era uma máquina de radioterapia controlada por computador, muito moderna para sua época, por permitir a utilização do mesmo equipamento para a aplicação de diversas doses de radiação nos pacientes. Houve uma série de pelo menos 6 acidentes entre 1985 e 1987, nos quais os pacientes receberam overdose de radiação. Webb5 juli 2024 · The Therac-25 operated in two modes: low power mode and high power mode. Low power mode used an electron beam that didn’t penetrate too deeply, making it perfect for treating skin cancers. High power mode used x-rays to penetrate more deeply and treat bone or lung cancers.

WebbThe Therac-25 incident involved what has been called one of the worst computer bugs in history (L ynch 2024), though it was largely a matter of overall design issues rather than a speciﬁc coding err or. Therac-25 is a glaring example of what can go wr ong in a society that is heavily dependent on. http://sunnyday.mit.edu/papers/therac.pdf

WebbShe needed a dose of radiation treatment in the adjacent lymph nodes to make sure there would be no recurrence. The machine being used to treat Yarborough was a recent acquisition at Kennestone: a state-of-the-art linear accelerator called the Therac-25, which had already successfully performed 20,000 irradiations on the region's cancer patients. Webb10 juli 2024 · 放射线治疗肿瘤技术起源于20世纪60年代，Therac-25属于第三代医用高能电子直线加速器，采用双通概念，使仪器的空间更加紧凑和易于使用。 Therac-25比早期的设备具有更高的能量，能够对深部的病变进行治疗，同时降低了治疗费用，缩短了治疗时间。但Therac-25在使用不到二年的时间里，却出现了六次严重事故。 Therac-25一共售出 …

Webb10 aug. 2013 · Therac-25是一个在以前设计的基础上改进的治疗设备，该设备可能会发出两种射线:或者是一个低功耗的电子束或者是X射线。 Therac-25'的X射线是通过猛烈的高能电子束撞击到一块位于电子枪和患者之间的金属目标而产生的。第二项改进是对于更旧的Therac-20'电动保险联动装置采取软件控制的方式代替，做这项改进是因为软件被认为更 …

WebbTherac-25 var en strålbehandlingsmaskin som på grund av mjukvarufel utsatte minst 6 patienter för strålningsöverdoser mellan juni 1985 och januari 1987, med strålsjuka och i vissa fall död [1] som följd. [2]:18 Maskinen återkallades 1987 och genomgick genomgående designändringar, bland annat tillägget av hårdvaruskydd för att hantera … city hall alma michiganWebb10 okt. 2016 · Therac-25: Quick-and-Dirty. Program code started using machines to kill people as early as in 1985. A standard one-time therapeutic dose of radiation is up to 200 rads. 1000 rads is a lethal dose, and the revolted machine was burning the defenseless humans with 20 000 rads. city hall alton ilWebbA widely cited 1993 Computer article described failures in a software-controlled radiation machine that massively overdosed six people in the late 1980s, resulting in serious injury and fatalities. How far have safety-critical systems come since then? city hall alesundWebbセラック25（Therac-25）とは、カナダ原子力公社 (AECL) とフランスCGR-MeV社によって開発・製造されたコンピュータ制御の放射線療法機器である:425 。この機械は … city hall 4Webb16 okt. 2014 · The Therac-25 was a radiation therapy machine introduced by Atomic Energy of Canada Limited (AECL) in 1983. The machine was marketed as an advancement over the company's earlier models. Among the innovations of Therac-25 was the move to more complete computer control, allowing operators to set up the machine more quickly … city hall alpena miWebbTherac-25事件是在軟體工程界被大量參照的案例。. Therac-25是加拿大原子能有限公司（AECL）所生產的放射線療法機器，在Therac-6和Therac-20之後推出（以往的Therac-6和Therac-20是加拿大原子能有限公司和法國的CGL公司合作開發）。. 在1985年到1987年之 … city hall americus gaWebb9 sep. 2024 · Therac-25 to urządzenie do radioterapii stosowane w latach 80-tych w jedenastu szpitalach w USA i Kanadzie. W latach 1985-87 odnotowano sześć przypadków podania pacjentowi stukrotnie większej dawki promieniowania niż ustawiona przez lekarza powodując poważne obrażenia i śmierć pacjentów. Radioterapia jest wykorzystywana w … did another star wars actor die