Digital subtraction angiography has provided a method for noninvasive imaging of the cardiovascular system. The method was introduced into clinical practice by several groups of investigators over the last 3 years (Brennecke et al. 1977; Ergun et al. 1979; Kruger et al. 1979 a, b; Ovitt et...
DSA(digitalsubtractionangiography) 相关知识点: 试题来源: 解析 数字减影血管造影,是应用计算机处理数字化影像信息技术,以消除骨骼和软组织影像,突出显示血管影像。分为动脉法和静脉法DSA两种,前者血管显影较清晰,对比剂用量减少,但需行动脉内导管术,患者有一定的痛苦。
数字减影血管造影(digital subtraction angiography,DSA) DSA是基于顺序图像的数字减影,将未造影的图像和造影后图像分别经影像增强器增强,摄像机扫描而矩阵化,经模/数转换成数字化,两者相减而获得数字化图像,最后复经数/模转换成减影图像,此即DSA技术。该技术主要优点是图像中没有原来的骨与软组织影,故显示清楚,因其...
Digital subtraction angiography Digital Subtraction Angiography (DSA) is a technique used in interventional radiology to clearly visualize blood vessels
As experience with digital subtraction angiography (DSA) increases, both its advantages and disadvantages have become more evident. Although the intravenous approach (IV-DSA) is safer and less expensive than conventional arteriography, images are frequently suboptimal. Good-quality IV-DSAs quite accurately...
In current clinic practice, Digital Subtraction Angiography (DSA) technique is an efficacious visualization tool for the blood vascular structures. 在当前的临床实践中,数字血管减影技术是一种有效的血管可视化工具。补充资料:动脉数字减影血管造影 动脉数字减影血管造影 intra?arterial digital subtraction angiograph...
The myth of DSA is derived from its historical roots such as the Steinberg technique, the photographic subtraction technique and the development of angiography, which is recognized as being the decisive method for the detection of the most important epidemiologic diseases of the vascular system. The...
血管造影X射线系统(Digital Subtraction Angiography),近几年来被各大医院广泛使用,主要用于心、脑、外周血管疾病的造影检查和介入治疗。DSA和常规血管造影检查相比具有造影剂量小、时间短、对病人侵害小等特点。该系统具有强大的高级功能模块,如类CT软组织成像、实时介入穿刺导航、三维动态路图、下肢跟踪造影、旋转造影、...
Digital subtraction angiography (DSA), utilizing computerized x-ray imaging equipment for image acquisition and subtraction, will provide substantial improvements in blood vessel imaging. With the high contrast sensitivity of these systems, visualization of major blood vessels using intravenous injections of...
Objective To compare the techniques of bolus chasing angiography(BCA)and static digital subtraction angiography(DSA).Methods The parameters of BCA and DSA including time of examination,dose of contrast medium,image quality and dose-area product(DAP)were comparatively analysed in 61 patients with symptom...