The 3D-DSA image is particularly instructive for those who look to underlying ICA dysplasia as a necessary pre-condition for aneurysm growth. One can readily appreciate how most necks are imperfect, with ledges, nooks, and folds that will not readily accomodate a coil loop.

Pseudo-occlusion of the cervical internal carotid artery refers to an isolated occlusion of the distal intracranial ICA that mimicks an extracranial ICA occlusion on CTA or DSA. In pseudo-occlusion it looks as if there is a total occlusion in the ICA just above the level of the bulbus.

A new model-free optical flow technique was tested reliably on the ICA. DSA-based blood flow velocity measurements were essentially validated with Doppler sonography whenever the conditions of measurable pulsatility were achieved (injection rates = 1.5 and 2.0 mL/s).

2019年2月18日 · 颈内动脉C6段在侧位脑血管造影显示最清楚，在与C5段（床突段）交界处远侧的颈内动脉向上后弯曲形成所谓的颈动脉虹吸部，由颈内动脉海绵窦段与床突上段构成一个“S”形弯曲，在前后位颈内动脉海绵窦段远侧及硬膜内…

2004年10月28日 · Background and Purpose— Clinical trials have shown that carotid endarterectomy reduces stroke risk in symptomatic individuals with severe internal carotid artery (ICA) stenosis. As a result of these trials, digital subtraction angiography (DSA) became a standard of reference for ICA stenosis diagnosis.

一、起源——基于DSA的形态学. 1938年，德国学者Fisher E，在他的经典之作中首次创立了包括ICA、ACA和MCA在内的颅内动脉分段体系，以数字序号标记，以它们的分叉部作为三者分段的起点，依据的是DSA血管的走行和分支特点。

2021年10月13日 · dsa特点符合以下2项即可诊断ica次全闭塞：（1）病变ica与颈外动脉比较，对比剂到达颅内的显影成像时间明显延迟；（2）dsa显示同侧颅内动脉显影稀疏或对侧血流充盈明显增强；（3）病变侧ica管腔较对侧ica明显缩小；（4）与同侧颈外动脉比较，ica管径明显缩小。

2020年12月18日 · 血管内栓塞治疗是颅内动静脉畸形（AVMs）治疗的常用方法，可以减小畸形巢体积和畸形团通过的血流。 血管内栓塞有一些常见的风险和并发症。 其中，有关栓塞后临近畸形脑实质的迟发型 水肿或出血的原因目前尚不完全清晰。 多个理论，包括过载、梗阻性充血、 动脉毛细血管-静高压综合症和正常灌注压突破被用于解释这一现象。 但是如何早期发现或预测，目前尚无有效办法，彩色编码定量DSA或许是一个有效的方法。 摘要背景 颅内动静脉畸 …

2023年1月1日 · Acute intracranial internal carotid artery (ICA) occlusion can mimic an extracranial affectation on Computed Tomography angiography (CTA). This fact could be explained by the extension of the thrombus in the ICA concerning its arterial branches. This study aims to determine how this factor may influence imaging findings.

Background and Purpose: This study aimed to identify the imaging characteristics and discriminate the etiology of acute internal carotid artery occlusion (ICAO) on computed tomography angiography (CTA) in patients with acute ischemic stroke.