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ICS (a szabványok nemzetközi osztályozási rendszere) szerinti keresés

Nettó ár: 15070 Ft
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Hivatkozási szám
MSZ EN 61267:2006
Dokumentumazonosító
140624
Cím
Gyógyászati diagnosztikai röntgenberendezések. Röntgensugárzási feltételek a jellemzők meghatározásához (IEC 61267:2005)
Angol cím
Medical diagnostic X-ray equipment. Radiation conditions for use in the determination of characteritics (IEC 61267:2005)
Alkalmazási terület
This International Standard applies to test procedures which, for the determination of characteristics of systems or components of medical diagnostic X-RAY EQUIPMENT, require well-defined RADIATION CONDITIONS. Except for mammography, this standard does not apply to conditions where discontinuities in radiation absorption of elements are deliberately used to modify properties of the RADIATION BEAM (for example by rare earth filters). RADIATION CONDITIONS as used for screen-film sensitometry are not covered in this standard. NOTE Screen-film sensitometry is the subject of the ISO 9236 series. This standard deals with methods for generating RADIATION BEAMS with RADIATION CONDITIONS which can be used under test conditions typically found in test laboratories or in manufacturing facilities for the determination of characteristics of medical diagnostic X-RAY EQUIPMENT. Examples of such RADIATION QUALITIES are RADIATION BEAMS emerging through the filtration from the X-RAY SOURCE ASSEMBLY. RADIATION CONDITIONS represent the more general case, where SCATTERED RADIATION emerges from an EXIT SURFACE of a PATIENT or a PHANTOM. This requires a well defined geometrical arrangement. The most complete specification of RADIATION FIELDS is given by the spectral distribution of the photon fluence. Since the measurement of X-RAY SPECTRA is a demanding task, this standard expresses RADIATION QUALITIES in terms of the X-RAY TUBE VOLTAGE, the first and second HALFVALUE LAYER. In the case of RADIATION CONDITIONS, specifications are performed additionally in terms of PHANTOM properties and geometry. The attempt to characterize a spectral distribution just by means of the X-RAY TUBE VOLTAGE, the first and possibly the second HALF-VALUE LAYER is thus a compromise between the mutually conflicting requirements of avoiding excessive efforts for establishing a RADIATION QUALITY and of the complete absence of any ambiguity in the definition of a RADIATION QUALITY. Due to differences in the design and the age of X-RAY TUBES in terms of anode angle, anode roughening and INHERENT FILTRATION, two RADIATION QUALITIES produced at a given XRAY TUBE VOLTAGE having the same first HALF-VALUE LAYER can still have quite different spectral distributions. Given the inherent ambiguity in the characterization of RADIATION Túl hosszú scope
ICS
11.040.50 Röntgenkészülékek
A szabvány nyelve
angol
Az érvényesség kezdete
2006-06-01
További adatok
Forrás
idt EN 61267:2006; idt IEC 61267:2005
Utód
Módosítás
Kiegészítő információk
SZK-közlemények
Kapcsolódó európai jogszabály
Kereskedelmi adatok
A szabvány
kapható formátuma
Papír ,
PDF (letöltés) (a fájl mérete: 591829) ,
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43 oldal; S kategória
ára
Nettó: 15070 Ft
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Papír formátum esetén (5% Áfával): 18988 Ft
PDF (letöltés) formátum esetén (27% Áfával): 19139 Ft
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Megtekintett szabvány

MSZ EN 61267:2006

2006-06-01

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