Improvement of image quality in portal vein dual-low CT venography with CE-Boost technique
10.3969/j.issn.1002-1671.2024.06.030
- VernacularTitle:CE-Boost技术对门静脉双低CT静脉成像图像质量的提高
- Author:
Dandan NIU
1
;
Yuqing SUN
;
Nannan SUN
;
Yancui BI
;
Min ZHANG
;
Ying LI
;
Zhuangfei MA
;
Shouqiang JIA
Author Information
1. 山东第一医科大学附属人民医院影像科,山东 济南 271100
- Keywords:
CE-Boost technique;
low dose;
low contrast media usage;
computed tomography venography;
image quality
- From:
Journal of Practical Radiology
2024;40(6):990-993
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the image quality improvement of portal vein computed tomography venography(CTV)using CE-Boost technique with low dose and low contrast media usage.Methods A total of 50 patients with suspected portal vein disorders who underwent abdominal non-contrast and biphasic contrast-enhanced CT scans using the Canon 320-row CT machine were retrospectively selected.Images of portal venous phase(PVP)were postprocessed with CE-Boost technique.The CT values of each area,standard deviation(SD)values of the paraspinal muscles,volume CT dose index(CTDIvol),and dose length product(DLP)before and after CE-Boost were measured and recorded.The signal-to-noise ratio(SNR),contrast-to-noise ratio(CNR),effective dose(ED)of each blood vessel before and after CE-Boost were calculated.Subjective image quality was analyzed by two senior radiologists using a five-point scale in a double-blinded method.Statistical analysis was performed using paired t-test and Wilcoxon test.Results The CT values of each area with CE-Boost images were significantly higher than those without CE-Boost images(P＜0.001).SNR and CNR of each blood vessel with CE-Boost images were significantly higher than those without CE-Boost images(P＜0.001).The subjective scores of both images were above 3 points,which met the requirements of clinical diagnosis with good consistency(Kappa=0.772,0.697).The median subjective scores of images with CE-Boost were 5(5,5),which were significantly higher than those without CE-Boost images 5(5,4),(P=0.002).CTDIvol,DLP and ED were(1.85±1.12)mGy,(94.66±44.68)mGy·cm and(1.42±0.67)mSv,respectively.Conclusion CE-Boost technique can significantly improve the image quality of portal vein CTV with low dose and low contrast media usage.
