ISSN 1004-4140
CN 11-3017/P
Turn off MathJax
Article Contents
Abstract
References
LIU Y H, LI W, NIU Y T, et al. Low-Dose Study on Coronary Artery Calcium Score Scanning Using the SEMI Mode of the Intelligent Optimal Tube Voltage Selection Technique in Combination with an Iterative Algorithm[J]. CT Theory and Applications, xxxx, x(x): 1-7. DOI: 10.15953/j.ctta.2024.317. (in Chinese).
Citation: LIU Y H, LI W, NIU Y T, et al. Low-Dose Study on Coronary Artery Calcium Score Scanning Using the SEMI Mode of the Intelligent Optimal Tube Voltage Selection Technique in Combination with an Iterative Algorithm[J]. CT Theory and Applications, xxxx, x(x): 1-7. DOI: 10.15953/j.ctta.2024.317. (in Chinese).
shu

Low-Dose Study on Coronary Artery Calcium Score Scanning Using the SEMI Mode of the Intelligent Optimal Tube Voltage Selection Technique in Combination with an Iterative Algorithm

  • BEIJING TONGREN HOSPITAL, CMU, Radiology Department , Beijing, China

More Information
  • Received Date: December 22, 2024
  • Revised Date: March 08, 2025
  • Accepted Date: March 09, 2025
  • Available Online: April 05, 2025
    Graphical Abstract
    • Abstract

  • Objective: To explore the feasibility of the SEMI mode of the intelligent optimal tube voltage selection technique (Care kV SEMI) in combination with an iterative algorithm in low-dose calcium score scanning for coronary artery examination. Methods: SEMI-automatic tube voltage (Care kV SEMI) and tube current (CareDose 4D on) modulation were used in the phantom experiment. For the SEMI automatic tube voltage group SEMI 120 kV (ref.kV was 100 and 120 kV), ref.mAs was 40, 60, and 80 mAs. The reconstruction algorithms were filtered back projection ADMIRE 3, 4, 5. The volume CT dose index (CTDIvol), contrast-to-noise ratio (CNRp) and figure of merit (FOM) of each group were compared, and a set of parameters were selected for clinical patient image acquisition after a comprehensive comparison. A retrospective analysis of coronary artery calcium score scanning images was conducted, using 30 patients as a control group (ref.kV, 120 kV; ref.mAs, 80 mAs; reconstruction algorithm, FBP) and a prospective collection of 109 patients with coronary artery calcium score CT images as an experimental group (Care kV SEMI, 120 kV; ref.kV, 100 kV; ref.mAs, 80 mAs). The reconstruction algorithms were FBP and ADMIRE 3, 5. The dose length product (DLP), effective dose (ED), contrast-to-noise ratio (CNR) at the left main coronary artery (LM) and right coronary artery (RCA) ostial level, Agaston score, and risk classification were recorded and compared between groups. The images of the patients were evaluated by two senior diagnostic doctors on a four-point scale. The radiation dose, calcification score, risk classification, and image quality were statistically analyzed using SPSS software. Results: ① Phantom experiment: The radiation dose of the experimental group was lower than that of the control group. Under the same scanning parameters, the CNRp increased with an increasing reconstruction algorithm level. The FOM of the four reconstruction algorithms in the ref.kV 100 kV + ref.mAs 80 mAs group was higher than that in the control group. ② Clinical study: There was a statistically significant difference in ED between the experimental group and the control group (P < 0.001). There was no statistically significant difference in CNRc between the experimental group with FBP and the control group on the LM and RCA levels (P > 0.0125).There was no significant difference in Agaston score between the experimental and control groups (P > 0.05). The consistency of the risk grade in the experimental group was good, with kappa values of 0.93 and 0.88, respectively. There was no statistically significant difference in FBP and CNRc between the experimental and control groups at either level (P > 0.0125). The subjective evaluation results of doctors A and B were consistent, and the kappa value was 0.952. There was a statistically significant difference in the subjective evaluation between the two groups (P < 0.001). Conclusion: Care kV SEMI combined with an iterative algorithm has little effect on the calcification score and risk classification, and it can effectively reduce the radiation doses of patients with a BMI of 18–25.

    • FullText(HTML)
    • References (20)
  • [1]
    王俊琴, 刘太峰, 张海燕. 智能最佳管电压联合自动管电流在降低胸部CT扫描剂量中的应用[J]. 临床放射学杂志, 2019, 38(5): 931-935.

    WANG J Q, LIU T F, ZHANG H Y, et al. Application of the technique of CARE kV combined with CARE dose 4D in reducing radiation dosage of chest CT scanning[J]. Journal of Clinical Radiology, 2019, 38(5): 931-935. (in Chinese).
    [2]
    《中国心血管健康与疾病报告》编写组. 《中国心血管健康与疾病报告2020》概述[J]. 中国心血管病研究, 2021, 19(7): 582-590. DOI: 10.3969/j.issn.1672-5301.2021.07.002.
    [3]
    SCHERNTHANER R E, HAROUN R R, NGUYEN S, et al. Characteristics of a new x-ray imaging system for interventional procedures: improved image quality and reduced radiation dose[J]. Cardiovasc Intervent Radiol, 2018, 41(3): 502-508. DOI: 10.1007/s00270-017-1821-z.
    [4]
    吴杰, 陆再英, 徐春芳, 等. 中国健康人群正常心率范围的调查[J]. 中华心血管病杂志, 2001, 29(6): 369-371. DOI: 10.3760/j:issn:0253-3758.2001.06.011.

    WU J, LU Z Y, XU C F, et al. Investigation of the normal heart rate limits of the Chinese[J]. Chinese Journal of Cardiology, 2001, 29(6): 369-371. DOI: 10.3760/j:issn:0253-3758.2001.06.011.
    [5]
    The 2007 Recommendations of the International Commission on Radiological Protection. ICRP publication 103. Annals of the International Commission on Radiological Protection. 2007;37(2-4): 1-332. DOI: 10.1016/j.icrp.2007.10.003.
    [6]
    冯梦雅, 李冰, 吴敏, 等. 基于AI的新迭代重建算法与低管电压在降低肥胖患者冠状动脉CTA辐射剂量中的应用[J]. CT理论与应用研究, 2023, 32(6): 777-782. DOI: 10.15953/j.ctta.2022.148.

    FENG M Y, LI B, WU M, et al. Application of new iterative reconstruction algorithm based on artificial intelligence and low tube voltage in reducing the radiation dose of coronary CTA in obese patients[J]. CT Theory and Applications, 2023, 32(6): 777-782. DOI: 10.15953/j.ctta.2022.148. (in Chinese).
    [7]
    徐卓东. CARE kV—智能最佳kV扫描技术——降低剂量的同时提高图像质量[J]. 中国医疗设备, 2012, 27(02): 120-123. DOI: 10.3969/j.issn.1674-1633.2012.02.037.

    XU Z D. CARE kV—Intelligent optimal kV Scanning Technology: Reducing x-ray dose and improVing CT image quality synchronously[J]. China Medical Devices, 2012, 27(02): 120-123. DOI: 10.3969/j.issn.1674-1633.2012.02.037.
    [8]
    王俊琴, 刘太峰, 张海燕. 智能最佳管电压联合自动管电流在降低胸部CT扫描剂量中的应用[J]. 临床放射学杂志, 2019, 38(05): 931-935.

    WANG J Q, LIU T F, ZHANG H Y. Application of the technique of CARE kV combined with CARE dose 4D in reducing radiation dosage of chest CT scanning[J]. Journal of Clinical Radiology, 2019, 38(05): 931-935. (in Chinese).
    [9]
    樊荣荣, 施晓雷, 钱懿等. 应用全模型迭代重组技术的非门控胸部低剂量CT平扫一站式筛查对冠状动脉钙化积分危险度分层的准确性评价[J]. 临床放射学杂志, 2019, 38(03): 547-552.

    FAN R R, SHI X L, QIAN Y, et al. Assessment of the accuracy of risk stratification of coronary ccalcification by non-gated low-llose chest CT using IMR Technique[J]. Journal of Clinical Radiology, 2019, 38(03): 547-552. (in Chinese).
    [10]
    NAKAZATO R, DEY D, GUTSTEIN A, et al. Coronary artery calcium scoring using a reduced tube voltage and radiation dose protocol with dual-source computed tomography[J]. Journal Of Cardiovascular Computed Tomography, 2009, 3(6): 394-400. DOI: 10.1016/j.jcct.2009.10.002.
    [11]
    ZHANG J, KANG S, HAN D, et al. Application of intelligent optimal kV scanning technology (CARE kV) in dual-source computed tomography (DSCT) coronary angiography[J]. International Journal of Clinical and Experimental Medicine, 2015, 15;8(10): 17644-53.
    [12]
    汤化民, 苟杰, 林伟等. 心脏CT重建时相对冠状动脉钙化积分危险分级的影响[J]. 中国医学影像技术, 2021, 37(01): 50-53. DOI: 10.13929/j.issn.1003-3289.2021.01.011.

    TNG H M, GOU J, LIN W, et a1. Impact of cardiac CT reconstruction time interyal on risk stratification of coronary artery calcium scoring[J]. Chinese Journal of Medical Imaging Technology. 2021, 37(01): 50-53. DOI: 10.13929/j.issn.1003-3289.2021.01.011.(in Chinese).
    [13]
    CHOI A D, LEIFER E S, YU J H, ET A1. Reduced radiation dose with model based iterative reconstruction coronary artery calcium scoring[J]. European Journal of Radiology, 2019, 111: 1-5. DOI: 10.1016/j.ejrad.2018.12.010.
    [14]
    WILLEMINK M J, DE JONG P A, LEINER T, et al. Iterative reconstruction techniques for computed tomography Part 1: technical principles[J]. European Radiology, 2013, 23: 1623-1631. DOI: 10.1007/s00330-012-2765-y.
    [15]
    张卓璐, 刘卓, 洪楠. 混合迭代重建混合权重对心脏CT冠状动脉钙化积分影响[J]. 放射学实践, 2021, 36(06): 751-755. DOI: 10.13609/j.cnki.1000-0313.2021.06.012.

    ZHANG Z L, LIU Z, HING N. Impact of hybrid iterative reconstruction blending weight on coronary artery calcium score based on cardiac CT[J]. Radiologic. Practice, 2021, 36(06): 751-755. DOI: 10.13609/j.cnki.1000-0313.2021.06.012.
    [16]
    FAN R, SHI X, QIAN Y, et al. Optimized categorization algorithm of coronary artery calcification score on non-gated chest low-dose CT screening using iterative model reconstruction technique[J]. Clinical Imaging, 2018, 52: 287-291. DOI: 10.1016/j.clinimag.2018.08.015.
    [17]
    龙斌, 宋少辉, 刘怡等. SAFIRE算法对冠状动脉钙化积分的影响[J]. 临床放射学杂志, 2018, 37(07): 1117-1120.

    LONG B, SONG S H, LIU Y, ET A1. The impact of sinogram-affirmed iterative reconstruction algorithms on coronary calcium scoring[J]. Journal of Clinical Radiology, 2018, 37(07): 1117-1120. (in Chinese).
    [18]
    谢刚, 邓晓凤, 刘璐思等. 双源CT实时迭代ADMIRE重建技术在肝脏CT扫描中的应用价值[J]. 中国社区医师, 2020, 36(7): 132, 134. DOI: 10.3969/j.issn.1007-614x.2020.07.079.

    XIE G, DENG X F, LIU L S, et a1. Application value of FORCE CT real-time iterative ADMIRE reconstruction technology in liver CT scanning[J]. Chinese Community Doctors, 2020, 36(7): 132, 134. , 2020, 36(7): 132, 134. DOI: 10.3969/j.issn.1007-614x.2020.07.079.(in Chinese).
    [19]
    MESSERLI M, RENGIER F, DESBIOLLES L, ET A1. Impact of advanced modeled iterative reconstruction on coronary artery calcium quantification[J]. Academic Radiology, 2016, 23(12): 1506-1512. DOI: 10.1016/j.acra.2016.08.008.
    [20]
    MARWAN M, METTIN C, PFLEDERER T, ET A1. Very low-dose coronary artery calcium scanning with high-pitch spiral acquisition mode: comparison between 120-kV and 100-kV tube voltage protocols[J]. Journal of Cardiovascular Computed Tomography, 2013, 7(1): 32-8. DOI: 10.1016/j.jcct.2012.11.004.
    • Related Articles

Catalog

    Get Citation
    PDF
    XML
    Article views (4) PDF downloads (0) Cited by()
    Related

    Website Copyright © Editorial Office of Computerized Tomography Theory and Applications

    Address：No.5 Minzudaxue Nanlu,Haidian District,Beijing 100081,P.R.China（100081）

    E-mail：cttacn@cea-igp.ac.cn

    Phone：010-68729234

    京ICP备08002722号-11

    震球期刊
    CT理论与应用研究-中英文
    E-mail
    RSS

    Supported by: Beijing Renhe Information Technology Co. Ltd     Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return