Influence of various doses and injection rates of contrast agent on CT perfusion in rabbits' liver with deconvolution method / 中国医学影像技术
Chinese Journal of Medical Imaging Technology
;
(12): 612-615, 2010.
Artículo
en Chino
| WPRIM
| ID: wpr-472250
ABSTRACT
Objective To study the influence of various doses and injection rates of contrast agent on CT perfusion in rabbits' liver with a deconvolution mathematical model. Methods Eight rabbits were enrolled in the experiment. Randomized block design was adopted. The treatment factor (contrast medium injection rate) was classified into 0.5, 1.0, 1.5 ml/s, while the subjects were divided into 3 blocks with contrast medium injection dose of 0.5, 1.0 and 1.5 ml/kg. The data obtained at CT perfusion imaging were then transferred to the workstation. Absolute values of 7 perfusion parameters (hepatic arterior fraction, blood flow, blood volume, permeability surface, mean transmit time, hepatic artery perfusion and portal vein perfusion) were measured with perfusion software (Perfusion 3). Results The dose of contrast medium had significant effect on peak enhancement of the aorta, the portal vein and liver tissue (P0.05). Conclusion CT perfusion imaging with a deconvolution mathematical model can quantify the hemodynamic functional status in liver with stable results. This technique does not need strict confinement to dose and injection rate of contrast medium, and has great potential value to be put into clinical use.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Tipo de estudio:
Ensayo Clínico Controlado
/
Estudio pronóstico
Idioma:
Chino
Revista:
Chinese Journal of Medical Imaging Technology
Año:
2010
Tipo del documento:
Artículo
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