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| The applications of blending width and blending center in dual energy portal vein imaging with DSCT |
| WANG Xiao-mei1, BIAN Jie1, YANG Jun-wu1, BAI Jian-xin1, ZHANG Ce1, ZHANG Jian-fei2, SUI Hong-jin2 |
| 1. The Second Affiliated Hospital of Dalian Medical University, Dalian Liaoning 116027, China;2. Department of Anatomy, Dalian Medical University, Dalian Liaoning 116044, China |
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Abstract Objective: To assess the applications of blending width(BW) and blending center(BC) in dual energy portal vein imaging with DSCT. Method: The dual energy scan was performed during the portal venous phase on 30 randomly selected patients. During this course, through adjusting the blending width and blending center, 6 groups of images were optimized and contrasted. The original images which weighting coefficient were 0.3 acted as the control group images. CT value of region of interest(ROI) of the portal vein trunk and the liver were measured in these 7 groups. And the differences of CT value between the two ROI were separately measured and analyzed. Results: The results showed that there were statistic differences between the 6 optimized groups and control group images. The optimizing and contrasting made the CT value of the portal vein trunk and the liver higher and made the differences of CT value between the two ROI larger. There were 3 optimizing and contrasting groups in the range of BW=100~200, BC=50~100. The increasing of the CT value was most obvious. There were differences between the 3 groups and the other groups, but there were no statistic differences among the 3 groups. Conclusion: The optimizing and contrasting imaging of DSCT can improve the image quality of portal vein without increase the dosage of contrast-medium. The range of BW=100~200, BC=50~100 are the recommend parameters for optimizing and contrasting of DSCT.
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Received: 20 November 2012
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Corresponding Authors:
BIAN Jie
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2013, Vol. 24 
