80 kVp combined with artificial intelligence iterative reconstruction in lower extremity CT angiography of diabetic foot
10.13929/j.issn.1003-3289.2025.04.009
- VernacularTitle:80kVp联合深度学习全模型迭代算法用于糖尿病足下肢CT血管成像
- Author:
Yichuan LIANG
1
;
Huiying WANG
1
;
Mingrui SONG
1
;
Haonan ZHAO
1
;
Quanliang MAO
1
;
Yuning PAN
1
Author Information
1. 宁波大学附属第一医院放射科,浙江 宁波 315000
- Publication Type:Journal Article
- Keywords:
diabetic foot;
artificial intelligence;
radiation dosage;
tomography,X-ray computed;
prospective studies
- From:
Chinese Journal of Medical Imaging Technology
2025;41(4):548-552
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of 80 kVp combined with artificial intelligence iterative reconstruction(AIIR)in lower extremity CT angiography(CTA)of diabetic foot.Methods Sixty patients with diabetic foot were prospectively enrolled and divided into experimental group and control group(each n=30).Lower extremity CTA was performed using 80 kVp combined with AIIR in experimental group,while using 120 kVp combined with hybrid iterative reconstruction(HIR)in control group.The subjective and objective evaluation results of imaging quality,as well as the radiation dose of scanning were compared between groups.Results Compared with control group,images in experimental group showed higher subjective scores(5[5,5]vs.4[4,4]),displayed more branches of lower limb arteries(both P＜0.05),while the radiation dose decreased by 59.76％ ([8.29±0.53]mSv vs.[20.60±2.42]mSv).CT values,signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of each lower extremity artery segments were higher,while the noise of each lower extremity artery segments in experimental group were lower than those in control group(all P＜0.05).Conclusion 80 kVp combined with AIIR could reduce radiation dose and improve imaging quality of lower extremity CTA of diabetic foot,hence being helpful to displaying small arteries of lower extremity,such as dorsalis pedis arteries and common plantar metatarsal arteries.
