The study of dual energy spectral CT on the image quality of hand tendons
10.3969/j.issn.1002-1671.2014.06.029
- VernacularTitle:能谱 CT 最佳单能量图像对提高手部肌腱图像质量的研究
- Author:
Kai DENG
;
Wenwen WANG
;
Wei LI
;
Junjun WANG
;
Guangli WANG
;
Chengqi ZHANG
- Publication Type:Journal Article
- Keywords:
spectral CT;
image quality;
beam-hardening artifact;
hand tendon
- From:
Journal of Practical Radiology
2014;(6):1007-1009
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the image quality of hand tendons by using spectral CT,compared with conventional CT ima-ges.Methods Forty patients scanned with spectral CT were enrolled.The 65keV of optimal contrast-to-noise ratio (Optimal CNR) for viewing hand tendons was selected.The image quality of monochromatic GSI images (65 keV)and conventional CT images were compared with two different methods including subjective method and objective method by two radiologists respectively.Results In subjective method,the image quality in GSI images was superior to conventional CT images (P <0.05).And in objective method, the beam-hardening artifacts in the phalanges of fingers space were reduced markedly with hand tendons displaying more clearly in GSI images (P <0.05 ).There was no significant difference between the two radiologists in both methods with good correlation (Kappa=0.75,Kappa=0.85).Conclusion Spectral CT with the optimal 65keV monochromatic images could reduce the artifacts and increase image quality significantly in hand tendons imaging.It might be a very useful supplementary imaging method in detec-ting tendon diseases in routine work.
