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...
DSA(DigitalsuBtraCtionangiography) 相关知识点: 试题来源: 解析 即数字减影血管造影,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。它分为动脉法和静脉法两种。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。
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) is a robust imaging technique with high spatial resolution used in interventional neuroradiology on a daily basis. It is applied for diagnosis and treatment of a broad spectrum of neurovascular diseases, including acute stroke and intracranial aneurysm treatment. ...
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DSA(digital subtraction angiography) 答案: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... 点击查看完整答案 你可能感兴趣的试题 配伍题 【C型题】三尖瓣低位()|主动脉缩窄() A.右室增大 B.肿血减少 C.两者均有 D.两者均无 点击...
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...
Digital Subtraction Angiography DSA involves transmission of a video image of the output screen of the image intensifier to a computer, where that image is digitized, subtracted from static tissues, and recorded or printed (Figure 20-2, A). The image intensifier tube used in fluoroscopy ...
Digital subtraction angiography Digital Subtraction Angiography (DSA) is a technique used in interventional radiology to clearly visualize blood vessels
数字减影血管造影技术(Digital Subtraction Angiography,DSA)是一种新的X线成像系统,是常规血管造影术和电子计算机图像处理技术相结合的产物。普通血管造影图像具有很多的解剖结构信息,例如骨骼、肌肉、血管及含气腔隙等等,彼此相互重叠影响,若要想单纯对某一结构或组织进行细微观察就较为困难。