Therac - 25 and the security of the computer controlled equipment
نویسنده
چکیده
Therac-25, a radiation treatment machine, massively overdosed 6 people because of a software error. In this paper we describe Therac-25 briefly then explain what went wrong in each of the 6 incidents. Then we analyze the responsibility of involved parties and show why these accidents happened. In the following sections we discuss the seriousness of software errors briefly and analyze safety engineering in order to prevent such accidents. We also introduce another radiation therapy accident which happened recently, to emphasize the existence and the seriousness of software errors.
منابع مشابه
An Investigation of Therac-25 Accidents - I
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...
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Between June 1985 and January 1987, a computer-controlled radiation therapy machine, called the Therac-25, massively overdosed six people. These accidents have been described as the worst in the 35-year history of medical accelerators [6]. A detailed accident investigation, drawn from publicly available documents, can be found in Leveson and Turner [4]. The following account is taken from this ...
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Between June and January a computer controlled radiation ther apy machine called the Therac massively overdosed six people These accidents have been described as the worst in the year history of medical accelerators A detailed accident investigation drawn from publicly available docu ments can be found in Leveson and Turner The following account is taken from this report and includes both the f...
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