| 梁乙钏,王惠颖,宋鸣睿,赵浩楠,毛权良,潘宇宁.80 kVp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[J].中国医学影像技术,2025,41(4):548~552 |
| 80 kVp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 |
| 80 kVp combined with artificial intelligence iterative reconstruction in lower extremity CT angiography of diabetic foot |
| 投稿时间：2024-10-25 修订日期：2025-02-24 |
| DOI：10.13929/j.issn.1003-3289.2025.04.009 |
| 中文关键词: 糖尿病足 人工智能 辐射剂量 体层摄影术,X线计算机 前瞻性研究 |
| 英文关键词:diabetic foot artificial intelligence radiation dosage tomography, X-ray computed prospective studies |
| 基金项目:宁波市影像医学临床医学研究中心开放基金项目(2022LYKFYB03)。 |
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| 中文摘要: |
| 目的 观察80 kVp联合深度学习全模型迭代算法(AIIR)用于糖尿病足下肢CT血管成像(CTA)的价值。方法 前瞻性将60例糖尿病足患者随机分为试验组(n=30)与对照组(n=30);试验组以80 kVp联合AIIR、对照组以常规120 kVp联合混合迭代重建(HIR)方案行下肢CTA,比较2组图像主、客观评价结果及扫描辐射剂量。结果 与对照组相比,试验组图像质量主观评分 更高、显示下肢动脉分支更多(P均＜0.05),而辐射剂量下降59.76% 。试验组各下肢动脉节段CT值、信噪比(SNR)及对比度噪声比(CNR)均高于,而噪声均低于对照组(P均＜0.05)。结论 80 kVp联合AIIR可降低糖尿病足下肢CTA辐射剂量、提高图像质量并清晰显示足背动脉及跖足底总动脉等细小分支。 |
| 英文摘要: |
| 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 vs. 4 ), displayed more branches of lower limb arteries (both P＜0.05), while the radiation dose decreased by 59.76% ( mSv vs. 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. |
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