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- W2383079886 abstract "Objective:To improve the accuracy of the diagnosis in lower limb venography with dual-energy digital subtraction photography(DES).Methods:Of 50 cases with lower limb venography using DES,25 cases were initially diagnosed as lower limb vein disorders and counted for disease group,the other 25 cases were control group with the normal lower limb.After injection of contrast medium,the differences of the gray scale between soft tissue and enhanced lower limb veins on the images of disease group and control group before and after subtraction were compared.The detection rate of deep femoral vein valve at 4 minutes after contrast injection in these 2 groups were compared as well.Results:In the disease group,at 2min and 4min after contrast injection,the average gray level differences of the soft tissue and enhanced vein were(-110±25) and(-506±36) respectively before subtraction,and were(312±12) and(793±22) after subtraction.In the control group,the average gray level differences of the soft tissue and enhanced vein were(-549±31) and(-665±38) respectively before subtraction,and were(684±24)and(836±28) after subtraction.There were significant statistical differences of the gray scale between soft tissue and enhanced lower limb veins both within the same group and at the same time period before and after subtraction(P0.01).The gray scale difference between soft tissue and contrast enhanced blood vessels was lower before subtraction,but much higher after subtraction.In the disease group,the detection rate of deep femoral vein valves at 4min after contrast injection was 68% on the conventional DR before subtraction and was 98% on DES bone image after subtraction.Conclusion:The contrast of images of lower limb vein disorders showed significant improvement before and after subtraction,the accuracy of the diagnosis of lower limb vein disorders could be heightened by DES,the diagnostic efficacy of lower limb vein disorders could be raised by application of double exposure DES." @default.
- W2383079886 created "2016-06-24" @default.
- W2383079886 creator A5043254939 @default.
- W2383079886 date "2010-01-01" @default.
- W2383079886 modified "2023-09-22" @default.
- W2383079886 title "Application of dual-energy digital subtraction photography with DR system in lower limb venography" @default.
- W2383079886 hasPublicationYear "2010" @default.
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