宝石CT小剂量对比剂肺动脉成像不同阈值的应用研究

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (0 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Objective: To study the effect of angiography of the pulmonary arteries using the intelligent technology in the same trigger position, but different threshold value of low dose contrast agent, in order to improve the pulmonary CTA image quality. Methods: Seventy-two patients accepting pulmonary artery CTA were randomly divided into A, B, C group. The superior vena cava in the level of the aortic arch was the monitor position. 50, 80, 110 HU were the monitoring threshold under which the intelligent trigger scan was administered respectively. Both the difference of CT value of main pulmonary artery, segmental pulmonary artery, vein, aorta, and the difference between the subsegmental pulmonary arterial and the pulmonary venous enhancement CT value, and the differences of image quality in different monitoring threshold levels were compared finally. Results: The differences of the enhancement CT value of the main pulmonary artery, segmental pulmonary artery and pulmonary vein, aorta and subsegmental pulmonary artery and pulmonary vein and the image quality in different monitoring threshold level were significant. The 50 HU group had good image quality and superior to the other two groups(P<0.05). There were no significant difference between the 80 HU and the 110 HU groups(P>0.05) in the segmental pulmonary artery and vein. Conclusion: With superior vena cava for monitoring points in the level of the aortic arch, and by using 50 HU as the trigger threshold can obtain more ideal images.

Key words： Pulmonary artery Tomography, spiral computed

Received: 06 May 2015

PACS:	Ｒ543.2
	Ｒ814.42

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://www.jccmi.com.cn/EN/ OR http://www.jccmi.com.cn/EN/Y2015/V26/I11/776

[1]刘建新，刘剑，王霄英，等. 对比剂智能跟踪与预试验肺动脉MSCT成像的对比研究[J]. 放射学实践，2008，23（12）：1380-1382.
[2]刘建新，孙红霞，唐光建，等. 多层螺旋CT低剂量对比剂肺动脉成像的对比研究[J]. 中国医学影像技术，2006，22（7）：1012-1014.
[3]From AM, Bartholmai BJ, Williams AW, et al. Mortality associated with nephropathy after radiographic contrast exposure[J]. Mayo Clin Proc, 2008, 83(10): 1095-1100.
[4]Marenzi G, Assanelli E, Marana I, et al. N-acetylcysteine and contrast-induced nephropathy in primary angionplasty[J]. N Engl J Med, 2006, 354(26): 2773-2782.
[5]邓琦，罗泽斌，夏俊. 低辐射、低对比剂CT血管成像技术的临床应用现状[J]. 实用放射学杂志，2014，30（5）：872-874.
[6]夏巍，吴勇建，尹肖睿，等. 宝石能谱CT低对比剂量肺动脉造影的可行性研究[J]. 实用放射学杂志，2014，30（6）：1021-1025.
[7]周运峰，史河水，吴爱兰，等. 选择MSCT肺动脉血管成像触发点位置及后处理技术[J]. 中国医学影像技术，2010，26（8）：1561-1564.
[8]王胜利，牛猛，王强，等. 低剂量造影剂肺动脉血管成像初探[J]. 中国医科大学学报，2013，42（10）：932-934.
[9]徐志超，曹志坚，卜阳阳，等. 不同监测点在64层螺旋CT肺动脉智能触发成像中的应用价值[J]. 实用放射学杂志，2014，30（12）：2068-2071.
[10]秦海燕，申宝忠，王丹. 64层螺旋CTPA对肺动脉栓塞的诊断价值[J]. 中国医学影像技术，2008，24（4）：144-145．
[11]沈永菊，唐翠松，胡剑，等. 64层容积CT低剂量对比剂肺动脉成像的临床研究[J]. 同济大学学报，2014，35（3）：102-105.
[12]张小胜，彭飞，黄德剑. 64层螺旋CT 30 mL对比剂在肺动脉成像中的初步应用[J]. 中国临床研究，2014，27（11）：1393-1396.