宝石高清CT不同重建算法对冠状动脉细小分支#br#
CTA图像质量影响的初步研究

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Abstract Objective: To access image quality of small branches of coronary computed tomography angiography(CCTA) using different reconstruction algorithm(including Standard, Detail, HD standard, HD detail) by high definition CT(HDCT). Methods: Thirty patients underwent CCTA by HDCT, whose main branches of coronary artery area stenosis rate<25%, were enrolled. Curved planar reconstruction(CPR) images and artery diameter of 90 small branches about four reconstruction algorithms(Standard, Detail, HD Standard and HD Detail), each patient including sinu atrial nodal artery(SANA), right conus branch(RCB), first septal branch(FSB), were obtained using Auto Coronary Analysis of GE AW4.6. CT value, noise, signal noise ratio(SNR), and contrast-to-noise ratio(CNR) of above small branches about four reconstruction algorithms were measured and calculated on original axial image of 75％R-R interval. Above objective indicators among four reconstruction algorithms were analyzed by one-way analysis of variance(ANOVA). The CPR image quality with a 4-point grading scale(1: Arterial edge was fuzzy; 2: Arterial edge was clear; 3: Arterial edge was sharp; 4: Arterial edge was very sharp) was evaluated by two experienced radiologists. CPR image quality among four reconstruction algorithms were performed with paired Wilcoxon rank sum test. Results: ①The average diameter of above small branches was less than 2 mm no matter which reconstruction algorithm was selected. ②There were statistical differences in diameter(F=3.905, P=0.011), noise(F=14.956, P=0.000) among four reconstruction algorithms. There were no statistical differences in CT value(F=1.067, P=0.366), SNR(F=1.909, P=0.132), and CNR(F=2.320, P=0.079) among reconstruction algorithms. ③Multiple comparisons between four reconstruction algorithms on diameter of small branches of the coronary arteries and image noise were made. There were no statistical differences on diameter of small branches of the coronary arteries between Standard and Detail, Detail and HD Standard, HD Standard and HD Detail(P>0.05). There were statistical differences on diameter of small branches of the coronary arteries between any other two reconstruction algorithms(P<0.05). ④There were no statistical differences on image noise between Standard and Detail(P>0.05). There were statistical differences on image noise between any other two reconstruction algorithms(P<0.05). ⑤According to the order of Standard, Detail, HD standard, and HD detail; diameter, SNR and CNR were decreasing successively. However CT value and noise were increasing successively. ⑥There were statistical differences in CPR image quality(Z=-10.583, P=0.000) between any two groups. Conclusion: For small branches of the coronary arteries(diameter<2 mm), with improving of reconstruction algorithm on spatial resolution, CPR image quality is increasing successively. However, SNR and CNR of axial original image are decreasing. In short, excellent image of small branches of the coronary arteries can be obtained by HDCT to realize different clinic requirements.

Key words： Coronary vessels Tomography, spiral computed Coronary angiography

Received: 11 January 2016

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	Articles by authors
	HE Zhen
	ZHANG Ji-yang
	FU Fei
	XU Meng
	LI Yan
	DENG Xin
	WAN Ye-da

Cite this article:

HE Zhen,ZHANG Ji-yang,FU Fei, et al. Initial study about image quality of small branches in coronary CTA:#br# using different reconstruction algorithm by high definition CT[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2016, 27(9): 634-639.

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http://www.jccmi.com.cn/EN/ OR http://www.jccmi.com.cn/EN/Y2016/V27/I9/634

[1]李向东，云庆辉，苏燕平，等. HDCT技术进展及其临床应用价值[J]. 医疗卫生装备，2010，31（11）：109-114.
[2]何珍，万业达，付菲，等. 舌下含服硝酸甘油对冠状动脉CT成像质量影响的研究[J]. 临床放射学杂志，2006，25（8）：731-734.
[3]刘立艳，万业达，李艳，等. 口服水化治疗时机选择对预防造影剂肾病效果的研究[J]. 护士进修杂志，2013，28（9）：773-775.
[4]王健. 宝石CT的技术突破和临床应用[J]. 国际放射医学核医学杂志，2009，33（2）：126-128.
[5]蒋勇，许敏光，仇保跃. 宝石HDCT的技术特点与临床应用展望[J]. 医疗卫生装备，2010，31（1）：98-99.
[6]邵军明，徐晓东，孔军. CT成像质量影响因素综述[J]. CT理论与应用研究，2006，15（3）：61-67.
[7]白玫，刘彬. 浅谈多排螺旋CT图像质量及其影响因素[J]. 中国医疗设备，2008，23（8）：124-126.
[8]潘为领，王学廷，冯丽，等. 256层CT对冠状动脉细小分支血管的显示能力探讨[J]. 医学影像学杂志，2011，21（11）：1662-1665.
[9]佟铭，韩雅玲，王祖禄，等. 尸检证实小冠状动脉粥样硬化为猝死的病因之一[J]. 中华心血管病杂志，2004，32（增刊2）：330.
[10]Nerantzis C, Avgoustakis D. An S-shaped atrial artery supplying the sinus node area. An anatomical study[J]. Chest, 1980, 78(2): 274-278.
[11]黄明慧，田本祥，张化一，等. S形窦房结动脉的CT表现及临床意义[J]. 中国中西医结合影像学杂志，2013，11（2）：136-138.
[12]Ando’ G, Gaspardone A, Proietti I. Acute thrombosis of the sinus node artery: arrhythmological implications[J]. Heart, 2003, 89(2): E5.
[13]Antonopoulos A, Gialafos J, Toutouzas P. Sinus node dysfunction in acute inferior myocardial infarction. Role of sinus node artery and clinical course in patients with one-vessel coronary artery disease[J]. Cardiology, 1997, 88(2): 166-169.
[14]李红，齐国先. 窦房结动脉的影像学评价及其与病态窦房结综合征的关系[J]. 中国介入心脏病学杂志，2005，13（2）：90-93.
[15]于德新，李传福，马祥兴，等. 多层螺旋CT测量成人右冠状动脉圆锥支价值的初步研究[J]. 实用放射学杂志，2006，22（3）：271-273.
[16]Karube M, Utsunomiya H, Iida T, et al. Total repair of tetoralogy of Fallot in an adult: report of a case without prior treatment at 59 years of age[J]. Kyobu Geka, 1996, 49(5): 395-399.
[17]马玉良，王伟民，刘建，等. 冠状动脉介入过程中圆锥支或右心室支急性闭塞致心电图改变的观察[J]. 中国循环杂志，2013，28（5）：367-370.
[18]关怀敏，解金红，陈玉善，等. 肥厚型梗阻性心肌病冠状动脉室间隔支影像学变异及其意义[J]. 中国心血管病研究，2012，10（9）：641-643.
[19]夏丽萍，张书宁. 肥厚型心肌病冠状动脉造影的特征及临床意义[J]. 上海医学，2012，35（3）：224-227.
[20]关怀敏，解金红，陈玉善，等. 冠状动脉室间隔支影像学变异及其临床意义[J]. 心脏杂志，2014，26（1）：50-52.