Demonstration of Adamkiewicz artery using gemstone spectral CT angiography with optimal monochromatic technique
10.3760/cma.j.issn.1005-1201.2015.12.011
- VernacularTitle:能谱CT血管成像最佳单能量技术显示大根髓动脉的价值
- Author:
Wei XIA
;
Xiaorui YIN
;
Jingtao WU
;
Yongjian WU
;
Yuan ZHOU
;
Xiaoyuan FENG
- Publication Type:Journal Article
- Keywords:
Arteries;
Tomography,X-ray computed;
Comparative study
- From:
Chinese Journal of Radiology
2015;49(12):931-934
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the Adamkiewicz artery visualization using gemstone spectral CT angiography (CTA) with optimal monochromatic technique.Methods The prospective study was approved by the local institutional review board,and written informed consents were obtained for all the examinations.The successive 58 patients with suspected aortic aneurysm or dissection underwent aortic gemstone spectral CTA.They were divided into two groups based on the different reconstruction protocols:A,optimal monochromatic reconstruction;B,polychromatic reconstruction.Visualization rate of Adamkiewicz artery in two groups were recorded.Objective(measure CT value of the descending aorta and calculate signal-to-noise ratio [CNR]) and subjective (score of Adamkiewicz artery visualization) were evaluated.Paired samples t,Chi-square and Mann-Whitney U test were used for statistical analysis.Results CT value of descending aorta and CNR of group A [(568.4 ± 57.5)HU and (52.3 ± 8.1)] were significantly higher than group B[(346.2 ± 48.6)HU and (26.7 ± 3.7)] (t=12.70 and 15.20,P＜0.01).The visualization rate of Adamkiewicz artery in group A (94.8％,55/58) was higher than B (82.8％,48/58;x2=4.20,P=0.04).The score of group A (55 cases,3.9±0.8) was significantly higher than the group B (48 cases,3.4±1.0)(Z=-2.40,P=0.02).Conelusion Gemstone spectral CTA with optimal monochromatic reconstruction can improve the visualization efficiency and quality of the Adamkiewicz artery compared with routine polychromatic reconstruction protocol.
