P. O’Brien, Howard B. Michaels, B. A. Gillies, John E. Aldrich, John W. Andrew,
The Therac-25 is a new 25-MeV linear accelerator manufactured by Atomic Energy of Canada, Ltd. The first two ... The tenth value layer for neutrons from the Therac-25, at the entrance to a one-legged maze ...
Tópico(s): Nuclear Physics and Applications
1985 - Wiley | Medical Physics
Nancy G. Leveson, Clark Savage Turner,
Between June 1985 and January 1987, the Therac-25 medical electron accelerator was involved in six massive radiation overdoses. As a result, several people died and others were seriously injured. A detailed ...
Tópico(s): Risk and Safety Analysis
1993 - IEEE Computer Society | Computer
Edmond W. Israelski, William H. Muto,
... Analysis (FMEA) and fault tree analysis (FTA). The Therac 25 Radiation Therapy System incidents involved a combination of ...
Tópico(s): Technology Assessment and Management
2004 - Elsevier BV | The Joint Commission Journal on Quality and Safety
Pei Hsia, Jayarajan Samuel, David Chenho Kung, Liang Li, Chih‐Tung Hsu, Cris Chen, Y. Toyoshima,
... which serves a base for acceptance testing. The Therac-25 radiation therapy machine is described as a case ... show that the error-producing sequence in the Therac-25 can be generated through the method
Tópico(s): Software System Performance and Reliability
1995 - Elsevier BV | IFAC Proceedings Volumes
T. Taylor, G. VanDyk, L. W. Funk, R. M. Hutcheon, S. O. Schriber,
An electron linear accelerator system with several novel features has been developed for radiation therapy. The beam from a 25 cell S-band standing wave structure, operated in the π/2 mode with on-axis couplers, is reflected in an achromatic isochronous magnet and reinjected into the accelerator. The second pass doubles the energy while conserving rf power and minimizing the overall length of the unit. The beam is then transported through an annular electron gun and bent into the collimator by an ...
Tópico(s): Radiation Effects and Dosimetry
1983 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Nuclear Science
John E. Aldrich, John W. Andrew, Howard B. Michaels, Peter O’Brien,
The Therac 25 is a relatively compact therapy machine, the heart of which is a double-pass electron linear accelerator. ...
Tópico(s): Pulsed Power Technology Applications
1985 - Wiley | Medical Physics
... factors for the electron beams of an AECL Therac-25 have been determined for a variety of square ...
Tópico(s): Mass Spectrometry Techniques and Applications
1987 - Wiley | Medical Physics
Marwa Shousha, Lionel Briand, Yvan Labiche,
... Results on a case study inspired from the Therac-25 radiation machine show that our approach is effective ...
Tópico(s): Software System Performance and Reliability
2009 - Springer Science+Business Media | Lecture notes in computer science
David Arney, Sebastian Fischmeister, Julian M. Goldman, Insup Lee, Robert Trausmuth,
... was clearly demonstrated by the example of the Therac-25 linear accelerator system.6 Treatment devices must therefore ...
Tópico(s): Real-Time Systems Scheduling
2009 - Association for the Advancement of Medical Instrumentation | Biomedical Instrumentation & Technology
... Of particular note is the failure of the Therac-25 radiation therapy machine. This example provides evidence of ...
Tópico(s): Service-Oriented Architecture and Web Services
2002 - Elsevier BV | Computers in Biology and Medicine
... on this issue. The deaths caused by the Therac-25 radiation therapy machine provided an example of a ...
Tópico(s): Risk and Safety Analysis
1994 - BMJ | BMJ
... Mars Polar Lander, the Patriot missile, and the Therac‐25 radiation deaths. The focus of the paper is ...
Tópico(s): Quality and Safety in Healthcare
2010 - Wiley | Journal of Software Evolution and Process
David A. Jaffray, Jerry Battista, Aaron Fenster, Peter R. T. Munro,
... ii) two Atomic Energy of Canada Ltd. (AECL) Therac‐25's, (iii) two AECL Therac 6's, (iv) ...
Tópico(s): Advanced X-ray and CT Imaging
1993 - Wiley | Medical Physics
A 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?
Tópico(s): Risk and Safety Analysis
2017 - IEEE Computer Society | Computer
W. Eric Wong, Xuelin Li, Philip A. Laplante,
... systems to the public. Yet aside from the Therac-25 case, very few incidents of software failure causing ...
Tópico(s): Software System Performance and Reliability
2017 - Elsevier BV | Journal of Systems and Software
P. O’Brien, Howard B. Michaels, John E. Aldrich, John W. Andrew,
... produced on the Atomic Energy of Canada, Limited Therac 25 linear accelerator by computer-controlled scanning of the ...
Tópico(s): Radiation Dose and Imaging
1985 - Wiley | Medical Physics
... second hand information on a well known case (Therac-25), we show how the manufacturer behaved opportunistically when ...
Tópico(s): Risk and Safety Analysis
2006 - Wiley | Journal of Contingencies and Crisis Management
Edmond W. Israelski, William H. Muto,
... known but no longer marketed medical device, the Therac-25 computer controlled radiation therapy system, which was the ...
Tópico(s): Risk and Safety Analysis
2003 - SAGE Publishing | Proceedings of the Human Factors and Ergonomics Society Annual Meeting
... radiation. A series of accidents involving the AECL Therac 25 in the 1980s caused three fatalities and other ...
Tópico(s): Radiation Therapy and Dosimetry
2010 - Wiley | Medical Physics
Tópico(s): Combustion and Detonation Processes
2024 - IEEE Computer Society | Computer
Heidi Jugovic, Christopher Swickline,
... time. Three case studies are presented: Apollo XIII, Therac‐25, and a modern surface naval system. For each, ...
Tópico(s): Human-Automation Interaction and Safety
2023 - Wiley | INCOSE International Symposium
... record in Tyler at the time of the Therac 25 Malfunction 54, I would like to clarify the ... the therapist and very little information from the Therac 25 that it had delivered such a high dose; ... the first event, three AECL engineers examined the Therac 25 and could find no problems. At the time ... student and recalled changing the mode on the Therac 25 from photons to electrons. With her recall of ... reproduce the Malfunction 54 type event at all Therac 25 locations. There was a similar Therac 25 error in Yakima, Washington resulting from a different ...
Tópico(s): Radiation Dose and Imaging
2012 - Wiley | Medical Physics
... use in safety‐related applications. Examples include the Therac‐25 medical LINAC deaths, the growing number of Airbus ...
Tópico(s): Risk and Safety Analysis
1992 - Wiley | INCOSE International Symposium
David A. Jaffray, Jerry Battista, Aaron Fenster, Peter R. T. Munro,
... 3) a Varian Clinac 600c, (4) an AECL Therac 25, and (5) a Therac 20. The comparisons also ...
Tópico(s): Advanced X-ray and CT Imaging
1992 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
... of verification and validation, and test planning. The Therac 25 case study is presented in some detail. While ...
Tópico(s): Software Engineering Research
2008 - Wiley | Journal of Software Maintenance and Evolution Research and Practice
... Hager points out, the primary cause of the Therac-25 accidents was bad software design plus inadequate regulatory ...
Tópico(s): Advanced Radiotherapy Techniques
2012 - Wiley | Medical Physics
... have very severe consequences-costing lives (e.g. Therac-25 [13], Patriot missile) and money (e.g. Ariane ...
Tópico(s): Logic, programming, and type systems
2012 - Springer Science+Business Media | Lecture notes in computer science
Sergio Alejandro Gómez, Adrian Groza, Carlos Iván Chesñevar,
... outlined framework is validated by modeling the infamous Therac-25 accident.
Tópico(s): Access Control and Trust
2014 - Springer Nature | IFMBE proceedings
... railway accident, the USS Scorpion submarine accident, the Therac 25 radiotherapy malfunctions, the London Ambulance Service automated dispatch ...
Tópico(s): Parallel Computing and Optimization Techniques
2013 - | Undergraduate topics in computer science