Preliminary clinical application of contrast-enhanced MR angiography using 3D time-resolved imaging

来源 :中国人民解放军军医大学学报(英文版) | 被引量 : 0次 | 上传用户:axiaaawei
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Objective: To introduce a new better contrast-enhanced MR angiographic method, named 3D time-resolved imaging of contrast kinetics (3D-TRICKS). Methods: TRICKS is a high temporal resolution (2-6 s) MR angiographic technique using a short TR(4 ms) and TE(1.5 ms), partial echo sampling, in which central part of k-space is updated more frequently than the peripheral part. TRICKS pre-contrast mask 3D images are firstly scanned, and then the bolus injecting of Gd-DTPA, 15-20 sequential 3D images are acquired. The reconstructed 3D images, subtraction of contrast 3D images with mask images, are conceptually similar to a catheter-based intra-arterial digital subtraction angiographic series(DSA). Thirty patients underwent contrast-enhanced MR angiography using 3D-TRICKS. Results: Totally 12 vertebral arteries were well displayed on TRICKS, in which 7 were normal, 1 demonstrated bilateral vertebral artery stenosis, 4 had unilateral vertebral artery stenosis and 1 was accompanied with the same lateral carotid artery bifurcation stenosis. Four cases of bilateral renal arteries were normal, 1 transplanted kidney artery showed as normal and 1 transplanted kidney artery showed stenosis. 2 cerebral arteries were normal, 1 had sagittal sinus thrombosis and 1 displayed intracranial arteriovenous malformation. 3 pulmonary arteries were normal, 1 showed pulmonary artery thrombosis and 1 revealed pulmonary sequestrations abnormal feeding artery and draining vein. One left lower limb fibrolipoma showed feeding artery. One displayed radial-ulnar artery artificial fistula stenosis. One revealed left antebrachium hemangioma. Conclusion: TRICKS can clearly delineate most body vascular system and reveal most vascular abnormality. It possesses convenience and high successful rate, which make it the first choice of displaying most vascular abnormality.
其他文献
近年来,药品快速鉴别(简称药品快检)作为识别假劣药品的一种行之有效的技术手段在全国广泛推广应用,提高了基层药品质量监督检查的效率.北京市药品监督管理局怀柔分局将药品
目的 分析臭氧消融术治疗腰椎间盘突出症的近期临床效果.方法 选择腰椎间盘突出症患者38例,在CT引导下穿刺到椎间盘中心及突出物内,注入60 μg/ml臭氧10 ml~30 ml消融椎间盘髓
针对国家标准"GB/T 2912.1-1998中第1部分:游离水解的甲醛(水萃取法)"之测定方法中的主要操作条件进行多次试验,分析了分光光度法测定甲醛会产生影响的几个主要操作条件,为执
金属烤瓷全冠兼具金属的强度和瓷的美观,其颜色外观质感逼真,色泽稳定,表面光滑,耐磨性强,不易变形,抗折力强,具有一定的耐腐蚀性,属"永久性"修复.
构建学习型社会是我们党在新时期提出的一项重要奋斗目标,在建设具有中国特色社会主义现代化事业进程中具有重要意义。广播电视大学运用先进的教学媒体和现代化的教学手段,通过
Objective: To investigate the effects of anteroposterior cricoid spliting interposition costal grafting for moderate and severe laryngotracheal stenosis in chil
BACKGROUND: Protein nonenzymatic glycosylation is supposed to be one of mechanisms for chronic complications development in diabetes mellitus, and therefore, mi
邢台市自2009年推行农村新民居建设以来取得了多方面的成就,土地得到集约化利用、农民居住状况改善、农村基础设施和公共设施进一步完善、促进了农民增收、健康文明和谐的乡风
文章以南通市为例,从实践发展的角度,对民营企业自主创新发展给出一些对策建议。
本文介绍了二维码技术及其特点,探讨了它在企业信息管理中的应用,并结合实例描述了二维码的生成、打印和识别。其中,二维码的打印是用标签打印机打印成不干胶标签。 This pa