The effect of non-linear blending function for dual-energy CT on CT image of pulmonary angiography

VernacularTitle:双源双能量 CT 非线性融合技术对肺动脉成像图像质量的影响
Author: Jia BIAN ; Li ZHANG ; Xingyue JIANG ; Zhijie YIN ; Quan LI
Publication Type:Journal Article
Keywords: pulmonary embolism; computed tomography
From: Journal of Practical Radiology 2014;(6):1018-1020
CountryChina
Language:Chinese
Abstract: Objective To evaluate the effect of non-linear blending function for dual-energy CT on image of pulmonary angiogra-phy.Methods 27 patients underwent dual energy CT pulmonary angiography(CTPA).Data obtained with 100 kVp,140kVp,and non-linear blending were divided into group A,B,and C respectively.CT value of emboli were measured.Corresponding signal to noise ratio(SNR )and contrast to noise ratio(CNR)were calculated.One-way Anova analysis and Friedman test were used to ana-lyze statistical significance among these values.Results On quantitative analysis of 27 patients,there was no statistical difference for CT value of CTPA among the three groups(P >0.05).For the noise,CNR and SNR,there were statistically significant among the three groups(P <0.05).Conclusion The non-linear blending function has certain advantages in improved image signal-to-noise ratio and it can be used in CT pulmonary angiography examination for patients suspected pulmonary embolism clinically .