Preliminary study of peripheral artery CT angiography with auto-tube current of different tube voltage and noise index / 实用放射学杂志
Journal of Practical Radiology
;
(12): 1531-1534, 2015.
Artigo
em Chinês
| WPRIM
| ID: wpr-479015
ABSTRACT
Objective To evaluate the effect of different tube voltage and noise index (NI)on image quality and radiation dose during peripheral artery CTA with automatic tube current modulation(ATCM)technique.Methods Seventy-two patients were ran-domly divided into three groups with different scanning tube voltage and noise index as followsgroup A with 100 kV and NI of 1 5, group B with 80 kV and NI of 1 5,group C with 100 kV and NI of 20.Image quality,segmental vascular enhancement,signal-to-noise ratio (SNR),contrast-to-noise (CNR)and effective dose (ED)were independently evaluated in 3 groups.The methods of sta-tistics analysis were ANOVA,and P 0.05).Conclusion Using ATCM low-kV with high NI scanning can reduce radiation dose without interference on image quality for peripheral artery CTA.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Idioma:
Chinês
Revista:
Journal of Practical Radiology
Ano de publicação:
2015
Tipo de documento:
Artigo
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