Queries, comments, suggestions? Please contact us.



Area Radiology and radiological physics / Dosimetry : general terms, special quantities and units

IEV ref881-12-06

Symbol
D

en
absorbed dose
the quotient of d ε ¯ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaabsgacuaH1oqzgaqeaaaa@37F4@ by dm, where d ε ¯ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaabsgacuaH1oqzgaqeaaaa@37F4@ is the mean energy imparted by ionizing radiation to matter of mass dm

D= d ε ¯ dm MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaadseacqGH9aqpdaWcaaqaaiaabsgacuaH1oqzgaqeaaqaaiaabsgacaWGTbaaaaaa@3BAC@

Note – The SI unit of absorbed dose is joule per kilogram, whose special name is gray (Gy). The earlier special unit of absorbed dose, still in temporary use, was the rad.

1 Gy = 1 J kg−1 = 100 rad


fr
dose absorbée, f
quotient de l'énergie moyenne d ε ¯ MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaabsgacuaH1oqzgaqeaaaa@37F4@ communiquée par un rayonnement ionisant à une matière par la masse dm de cette matière

D= d ε ¯ dm MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaadseacqGH9aqpdaWcaaqaaiaabsgacuaH1oqzgaqeaaqaaiaabsgacaWGTbaaaaaa@3BAC@

Note – L'unité SI de dose absorbée est le joule par kilogramme et a reçu le nom de gray (Gy). L'ancienne unité de dose absorbée, utilisée encore temporairement, est le rad.

1 Gy = 1 J kg−1 = 100 rad


ar
جرعة ممتصة

es
dosis absorbida

it
dose assorbita

ko
흡수 선량

ja
吸収線量

pl
dawka pochłonięta

pt
dose absorvida

sv
absorberad dos
stråldos

Publication date: 1983-01
Copyright © IEC 2020. All Rights Reserved.