Effect of CT scanning parameters on CT number / 中华放射医学与防护杂志
Chinese Journal of Radiological Medicine and Protection
;
(12): 79-81, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-390854
ABSTRACT
Objective To study the effects on tissue CT number caused by scan protocols.Methods The phantom was repeatedly scanned in different protocols by changing only one of parameters,such as X-ray tube voltage,mAs and recon kernel,while other parameters were ketp unchanged.The CT number of different materials in phantom were measured and analyzed.Results The CT numbers of tissues changed remarkably with the tube voltage and had different relativity for different tissues.The CT numbers had positive correlation with kV for such maierials as polyethyle,lexan,perspex,but for teflon the correlation was negative.The mAs and recon kernel had no effects on CT number.Conclusions The CT number of tissue changes with scanning X-ray tube voltage,so the setting of scan parameters should be taken into account in image diagnosis and radiotherapy.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Tipo de estudo:
Guia de Prática Clínica
Idioma:
Chinês
Revista:
Chinese Journal of Radiological Medicine and Protection
Ano de publicação:
2010
Tipo de documento:
Artigo
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