Value of low-flow rate and-contrast injection scheme for pulmonary artery computed tomography angiography of elderly patients
10.19745/j.1003-8868.2024196
- VernacularTitle:低流速、低对比剂注射方案在老年患者肺动脉CTA检查中的应用价值
- Author:
Yue JIANG
1
;
Min XU
;
Hang-Hang SUN
;
Mei-Rong SUN
;
Qiu-Ju HU
;
Yan-E ZHAO
;
Dong-Sheng JIN
Author Information
1. 江苏省省级机关医院放射科,南京 210029
- Keywords:
low contrast agent;
lwo flow rate;
contrast injection scheme;
computed tomography of pulmonary artery;
elderly patient
- From:
Chinese Medical Equipment Journal
2024;45(10):66-70
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the application value of low-flow rate and-contrast injection scheme for pulmonary artery computed tomography angiography(CTA)in the elderly patients.Methods Sixty elderly patients undergoing pulmonary artery CTA in some hospital from April 2020 to January 2023 were selected and divided into a control group(30 cases)and an experimental group(30 cases)according to the contrast agent injection schemes.A conventional contrast injection scheme was used for the control group,and an optimized contrast injection scheme with low flow rate and low contrast dose was designed for the experimental group.The two gorups were observed and subjectively scored in terms of the degree of pulmonary artery enhancement,the display of pulmonary artery trunks and branches and the sharpness of image vessel edges,and objectively evaluated for the degree of contrast sclerosis artifacts in the superior vena cava and the enhancement CT values of the pulmonary artery trunks and the left and the right pulmonary veins.The extravasation of the contrast agent was recorded for the patients in the 2 groups.SPSS 25.0 software was used for statistical analysis.Results The two groups had no significant differences in score pulmonary artery CTA image quality(P＞0.05);the experimental group had the socre of contrast sclerosis artifacts in the superior vena cava statistically lower than that of the control group(P＜0.05).The two groups had no obvious differences in the CT values of the pulmonary artery trunks and the left and the right pulmonary veins(P＞0.05).There were no patients with the extravasation of the contrast agent found in the experimental group,while there one case with severe extravasation and 4 cases with mild or moderate extravasation in the control group.Conclusion Low-flow rate and-contrast injection scheme for pulmonary artery CTA of the elderly patients contributes to avoiding contrast agent extrava-sation while ensuring image quality,enhancing patient experience and safety.[Chinese Medical Equipment Journal,2024,45(10):66-70]
