迭代重建算法联合不同卷积核应用于冠脉双低扫描支架显示的比较研究

doi:10.12117/jccmi.2019.02.009

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摘要目的：探讨应用Safire迭代重建技术联合不同卷积核在冠脉支架成像的价值，评价卷积核（I50f）图像在冠脉支架显示的影响。方法：42例冠状动脉支架（84个）植入术后患者行双源CT冠状动脉CT血管造影（CCTA）检查，应用Safire迭代重建技术联合卷积核（I26f、I46f、I50f）对原始数据进行重建，分别从主观及客观两方面对图像质量进行评价和分析，比较各三组图像之间的差异。结果：三组图像主观评价分析显示，I50f组支架及其管腔显示的评分最高，为（4.07±0.32）分，三组图像质量差异有统计学意义（P=0.000）；主观分析中，随着卷积核核值增加，图像的噪声逐渐增大，三组图像间差别有统计学意义（P=0.000）；客观评价分析显示，三组支架管腔噪声之间的差别无显著性差异（P>0.05）。结论：Safire技术联合卷积核I50f对于支架显示评价最佳，可为临床提供更高质量的图像。

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	李妍
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	多国帅
	涂春蓉
	戴旭

关键词 ：冠状动脉疾病；支架；体层摄影术, X线计算机

Abstract： Objective: To evaluate the improvement of Safire iterative reconstruction technique in CT coronary stent imaging with different convolution kernels, and to assess the influence of convolution kernel(I50f) image on coronary stent display. Methods: Forty-two patients with 84 coronary stents were examined by dual-source coronary computed tomography angiography(CCTA). Images were reconstructed at convolution kernel of I26f, I46f and I50f with Safire iterative reconstruction technique. Subjective and objective evaluation of image quality of the three groups were performed and compared by two experienced radiologists independently. Results: The subjective evaluation analysis of the three groups of images showed that images of I50f group was rated the best for clearly showing the details of the stents and its lumen showed the highest score of 4.07±0.32, and the difference in the quality of the three groups of images was statistically significant(P=0.000). With the increase of the convolution kernel value, the noise of the image increased, and statistical significance could be found among the three groups(P=0.000). The objective evaluation showed that the noise of in-stent lumen among the three groups was not significantly different(P>0.05). Conclusion: Safire technology can effectively reduce noise and improve image quality, meanwhile its combination with the convolution kernel of I50f is the best evaluation for stent display in this study, which can provide better image quality for clinics.

Key words： Coronary disease Stents Tomography, X-ray computed

收稿日期: 2018-03-03

PACS:	Ｒ543.3
	Ｒ814.42

通讯作者: 戴旭，中国医科大学附属第一医院放射科，110001。E-mail：daixudex@vip.sina.com

作者简介: 李妍（1988-），女，辽宁沈阳人，技师。E-mail：454466945@qq.com

引用本文:

李妍，金士琪，多国帅，涂春蓉，戴旭. 迭代重建算法联合不同卷积核应用于冠脉双低扫描支架显示的比较研究[J]. 中国临床医学影像杂志, 2019, 30(2): 109-113.
LI Yan, JIN Shi-qi, DUO Guo-shuai, TU Chun-rong, DAI Xu. A comparative study of iterative reconstruction technique in CT coronary dual-low scan stent imaging with different convolution kernels. JOURNAL OF CHINA MEDICAL IMAGING, 2019, 30(2): 109-113.

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http://www.jccmi.com.cn/CN/10.12117/jccmi.2019.02.009 或 http://www.jccmi.com.cn/CN/Y2019/V30/I2/109

[1]Katz G, Harchandani B, Shah B. Drug-eluting stents: the past, present, and future[J]. Curr Atheroscler Rep, 2015, 17(3): 485.
[2]Pendyala L, Jabara R, Shinke T, et al. Drug-eluting stents: present and future[J]. Cardiovasc Hematol Agents Med Chem, 2008, 6(2): 105-115.
[3]Lehmkuhl L, Gosch D, Nagel HD, et al. Quantification of radiation dose savings in cardiac computed tomography using prospectively triggered mode and ECG pulsing: a phantom study[J]. Eur Radiol, 2010, 20(9): 2116-2125.
[4]Hoe J, Toh KH. First experience with 320-row multidetector CT coronary angiography scanning with prospective electrocardiogram gating to reduce radiation dose[J]. J Cardiovasc Comput Tomogr, 2009, 3(4): 257-261.
[5]Hirai N, Horiguchi J, Fujioka C, et al. Prospective versus retrospective ECG-gated 64-detector coronary CT angiography: assessment of image quality, stenosis, and radiation dose[J]. Radiology, 2008, 248(2): 424-430.
[6]Scheffel H, Alkadhi H, Leschka S, et al. Low-dose CT coronary angiography in the step-and-shoot mode: diagnostic performance[J]. Heart, 2008, 94(9): 1132-1137.
[7]战丽波，秦东京，邢学玲. 双源CT的基本原理及特性[J]. 放射学实践，2008，23（6）：698-700.
[8]Bogaard K, van der Zant FM, Knol RJ, et al. High-pitch prospective ECG-triggered helical coronary computed tomography angiography in clinical practice: image quality and radiation dose[J]. Int J Cardiovasc Imaging, 2015, 31(1): 125-133.
[9]Lim J, Park EA, Lee W, et al. Image quality and radiation reduction of 320-row area detector CT coronary angiography with optimal tube voltage selection and an automatic exposure control system: comparison with body mass index-adapted protocol[J]. Int J Cardiovasc Imaging, 2015, 31(Suppl 1): 23-30.
[10]金士琪，杨帆，初金刚，等. Stellar光子探测器薄层重建对冠脉支架CT成像效果的影响[J]. 放射学实践， 2016，31（12）：1177-1181.
[11]von SJ, Morsbach F, Winklhofer S, et al. Coronary artery stent imaging with CT using an integrated electronics detector and iterative reconstructions: first in vitro experience[J]. J Cardiovasc Comput Tomogr, 2013, 7(4): 215-222.
[12]Leipsic J, Labounty TM, Heilbron B, et al. Adaptive statistical iterative reconstruction: assessment of image noise and image quality in coronary CT angiography[J]. Am J Roentgenol, 2010, 195(3): 649-654.
[13]Wolf F, Leschka S, Loewe C, et al. Coronary artery stent imaging with 128-slice dual-source CT using high-pitch spiral acquisition in a cardiac phantom: comparison with the sequential and low-pitch spiral mode[J]. Eur Radiol, 2010, 20(9): 2084-2091.
[14]Mark DB, Berman DS, Budoff MJ, et al. ACCF/ACR/AHA/NASCI/SAIP/SCAI/SCCT 2010 expert consensus document on coronary computed tomographic angiography: a report of the American College of Cardiology Foundation Task Force on Expert Consensus Documents[J]. Circulation, 2010, 121(22): 2509-2543.
[15]Mahnken AH. CT Imaging of Coronary Stents: Past, Present, and Future[J]. ISRN Cardiol, 2012, 2012: 139823.
[16]Zhang X, Yang L, Ju H, et al. Prevalence and prognosis of coronary stent gap detected by multi-detector CT: a follow-up study[J]. Eur Radiol, 2012, 22(9): 1896-1903.
[17]Cheng VY, Slomka PJ, Le ML, et al. Coronary arterial 18F-FDG uptake by fusion of PET and coronary CT angiography at sites of percutaneous stenting for acute myocardial infarction and stable coronary artery disease[J]. J Nucl Med, 2012, 53(4): 575-583.
[18]de Graaf FR, Schuijf JD, van Velzen JE, et al. Diagnostic accuracy of 320-row multidetector computed tomography coronary angiography to noninvasively assess in-stent restenosis[J]. Invest Radiol, 2010, 45(6): 331-340.
[19]Ehara M, Surmely JF, Kawai M, et al. Diagnostic accuracy of 64-slice computed tomography for detecting angiographically significant coronary artery stenosis in an unselected consecutive patient population: comparison with conventional invasive angiography[J]. Circ J, 2006, 70(5): 564-571.
[20]Horiguchi J, Fujioka C, Kiguchi M, et al. Prospective ECG-triggered axial CT at 140-kV tube voltage improves coronary in-stent restenosis visibility at a lower radiation dose compared with conventional retrospective ECG-gated helical CT[J]. Eur Radiol, 2009, 19(10): 2363-2372.
[21]Prevrhal S, Engelke K, Kalender WA. Accuracy limits for the determination of cortical width and density: the influence of object size and CT imaging parameters[J]. Phys Med Biol, 1999, 44(3): 751-764.
[22]Zhou Q, Jiang B, Dong F, et al. Computed tomography coronary stent imaging with iterative reconstruction: a trade-off study between medium kernel and sharp kernel[J]. J Comput Assist Tomogr, 2014, 38(4): 604-612.
[23]Leber AW, Becker A, Knez A, et al. Accuracy of 64-slice computed tomography to classify and quantify plaque volumes in the proximal coronary system: a comparative study using intravascular ultrasound[J]. J Am Coll Cardiol, 2006, 47(3): 672-677.