4
24/05/2013 1 Effectivedoses in CT and planar radiography www.thelancet.com Published online June 7, 2012 DOI:10.1016/S0140-6736(12)60815-0 BMJ 2013 – Cancer risk in 680 000 people exposed to computed tomography scans in childhood or adolescence: data linkage study of 11 million Australians

24/05/2013 Effectivedoses in CT and planar radiography - USP · Effectivedoses in CT and planar radiography EvolutionofCT images Diagnosticradiology: trends Recentnews NYT 23/1/10

Embed Size (px)

Citation preview

24/05/2013

1

Effective doses in CT andplanar radiography

www.thelancet.com Published online June 7, 2012 DOI:10.1016/S0140-6736(12)60815-0

BMJ 2013 – Cancer risk in 680 000 people exposed to computed

tomography scans in childhood or adolescence: data

linkage study of 11 million Australians

24/05/2013

2

Cohen, 1995

Durante a vida, aproximadamente 42/100 pessoas serão diagnosticadas com câncer (círculos sólidos). Segundo o BEIR-VII, aproximadamente um câncer (estrela) poderia resultar de uma única exposição a 0,1 Sv de radiação de baixo LET acima do fundo.

Servoma in IAEA pub1113, data UNSCEAR 2000

DOSES EFETIVAS EM RADIOLOGIA DIAGNÓSTICA

24/05/2013

3

Effective doses in CT andplanar radiography

Evolution of CT images

Diagnostic radiology: trends Recent news

NYT 23/1/10

24/05/2013

4

Efeitos determinísticos devido à abundante morte celular: queimaduras e morte

Appearance of radiation-induced skin injury approximately 18 to 21 months following multiple coronary angiography and angioplasty procedures - evidence of progressive tissue necrosis (Source: http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsandProcedures/MedicalImaging/MedicalX-Rays/ucm116682.htm)