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) enables the vascular structure around a heart to be displayed using the injection of a contrast medium whilst the heart is being observed by an X-ray apparatus. The quality of a DSA sequence can be affected by the breathing of the patient, when under ...
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...
The purpose of this article is to review the contibution of DSA to neurosurgical practice and to outline its advantages and limitations compared to conventional film-screen angiography. 关键词: Digital subtraction angtography cerebral angiography DOI: 10.3109/02688698709023774 被引量: 4 年份: 1987...
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...
1 Digital subtraction angiography (DSA) refers to a process in which images of the arteries are taken before and after contrast injection. From:Neurologic Clinics,2010 About this page Set alert Also in subject areas: Biochemistry, Genetics and Molecular Biology ...
Digital subtraction angiography Digital Subtraction Angiography (DSA) is a technique used in interventional radiology to clearly visualize blood vessels
Digital subtraction angiography: current clinical applications. The applications of digital subtraction angiography (DSA) in neurologic diagnosis have been evolving as clinical experience with this technology accumulates. Initial enthusiasm with the intravenous contrast material injections has been t... DM ...
We evaluated the utility of intravenous digital subtraction angiography (IV DSA) for diagnosing lesions of the aortic arch and great vessels in 25 patients. Digital subtraction angiography (DSA) was found useful in evaluating congenital and acquired lesions of the arch and great vessel origins, and...
Intravenous digital subtraction angiography proved to be an acceptable screening tool for these highly vascular tumors. Also, intraarterial digital subtraction angiography proved very satisfactory for mapping of tumor blood supply, which greatly simplified preoperative embolization. Effectiveness of therapy was...