A quality assurance program of simulators in radiotherapy. Part 2: Extent and results of long-term quality assurance tests on a therapy simulator [Ein qualitatssicherungsprogramm fur simulatoren in der strahlentherapie. Teil 2: Umfang und ergebnisse langjahriger konstanzprufungen an einem therapiesimulator]

Muller-Sievers, K; Baltas, D; Kober, B

dc.contributor.author	Muller-Sievers, K	en
dc.contributor.author	Baltas, D	en
dc.contributor.author	Kober, B	en
dc.date.accessioned	2014-03-01T01:45:52Z
dc.date.available	2014-03-01T01:45:52Z
dc.date.issued	1997	en
dc.identifier.issn	01797158	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24762
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031300363&partnerID=40&md5=1c36061f0e2adb1f5af52e476d00dc0c	en
dc.subject	Functional performance values	en
dc.subject	Periodic tests	en
dc.subject	Radiotherapy simulators	en
dc.subject	Tolerances	en
dc.subject.other	article	en
dc.subject.other	germany	en
dc.subject.other	international cooperation	en
dc.subject.other	linear accelerator	en
dc.subject.other	quality control	en
dc.subject.other	simulation	en
dc.subject.other	standard	en
dc.subject.other	Germany	en
dc.subject.other	health care quality	en
dc.subject.other	human	en
dc.subject.other	instrumentation	en
dc.subject.other	magnetic and electromagnetic equipment	en
dc.subject.other	radiotherapy	en
dc.subject.other	theoretical model	en
dc.subject.other	Germany	en
dc.subject.other	Humans	en
dc.subject.other	Models, Theoretical	en
dc.subject.other	Particle Accelerators	en
dc.subject.other	Quality Assurance, Health Care	en
dc.subject.other	Quality Control	en
dc.subject.other	Radiotherapy	en
dc.title	A quality assurance program of simulators in radiotherapy. Part 2: Extent and results of long-term quality assurance tests on a therapy simulator [Ein qualitatssicherungsprogramm fur simulatoren in der strahlentherapie. Teil 2: Umfang und ergebnisse langjahriger konstanzprufungen an einem therapiesimulator]	en
heal.type	journalArticle	en
heal.publicationDate	1997	en
heal.abstract	Background: Since 1990 we follow a quality assurance program with periodical tests of functional performance values of a 16-year-old simulator. Material and Method: For this purpose we adopted and modified German standards for quality assurance on linear accelerators and international standards elaborated for simulators (International Electrotechnical Commission). The tests are subdivided into daily visual checks (light field indication, optical distance indicator, isocentre-indicating devices, indication of gantry and collimator angles) and monthly and annually tests of relevant simulator parameters. Some important examples demonstrate the small variation of parameters over 6 years: position of the light field centre when rotating the collimator, diameter of the isocentre circle when rotating the gantry, accuracy of the isocentre indication device, and coincidence of light field and simulated radiation field. Results: As an important result we can state, that by these rigid periodic tests it was possible to detect and compensate deteriorations of simulators quality rapidly. Conclusions: Technical improvements and specific calling-in of maintenance personnel whenever felt appropriate provided performance characteristics of our old simulator which are required by international recommendations as a basis for modern radiotherapy.	en
heal.journalName	Strahlentherapie und Onkologie	en
dc.identifier.volume	173	en
dc.identifier.issue	12	en
dc.identifier.spage	693	en
dc.identifier.epage	699	en