Value of advanced virtual monoenergetic technique in improving imaging quality of lliofemoral arteries
10.3969/j.issn.1002-1671.2017.08.031
- VernacularTitle:新虚拟单能技术对提高髂股部动脉成像图像质量的价值
- Author:
Hui SHI
;
Zhigang ZHOU
;
Yan WU
;
Jianbo GAO
- Keywords:
advanced virtual monoenergetic technique;
lliofemoral arteries;
computed tomography
- From:
Journal of Practical Radiology
2017;33(8):1281-1284
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the value of advanced virtual monoenergetic technique(mono-plus) of dual-energy CT (DECT) in improving imaging quality of the lliofemoral arteries.Methods Forty consecutive patients underwent DECT scan.Mono-plus images (40 keV),optimal monoenergy images and mixed energy images were obtained by using Siemens Syngo.via VB10A workstation.CT values,signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR) and subjective image quality were calculated in the abdominal aorta,iliac artery,external iliac artery,femoral artery,profound femoral artery, lateral circumflex femoral artery,transversal branch of lateral circumflex femoral artery,medial circumflex femoral artery and profound branch of medial circumflex femoral artery and compared among the three groups.Results Compared with the optimal monoenergy and mixed energy groups,CT value and CNR of the 9 arteries were significantly higher in the mono-plus group (P<0.003).SNR of the transversal branch of lateral circumflex femoral artery and the profound branch of medial circumflex femoral artery showed no significant difference (P>0.05) among the threegroups,whereas SNR of the arties bigger than the 6th grade branch were significantly lower in the mono-plus group (P<0.05).The subjective image quality in the mono-plus group was significant better than the other two groups(P<0.001).Conclusion 40 keV mono-plus technique in DECT can improve the display of lliofemoral arteries especially the small and distal branches.
