Can the second phase of contrast-enhanced MRA of the neck provide additional information in the acute stroke setting?

IF 1.1 4区 医学 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Acta radiologica Pub Date : 2024-11-05 DOI:10.1177/02841851241290728
P Shah, H Kale, M Shrivastava, D Sanghvi, M Munshi, G Sangani, K Mundada
{"title":"Can the second phase of contrast-enhanced MRA of the neck provide additional information in the acute stroke setting?","authors":"P Shah, H Kale, M Shrivastava, D Sanghvi, M Munshi, G Sangani, K Mundada","doi":"10.1177/02841851241290728","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Double-concentration magnetic resonance imaging (MRI) contrast agents are frequently used in contrast-enhanced MR angiography (CE-MRA) of the head and neck. To avoid mistiming the peak concentration of intraluminal contrast (due to shorter duration of peak), a second acquisition is sometimes performed.</p><p><strong>Purpose: </strong>To evaluate additional information from the second acquisition of CE-MRA and compare the collateral scoring to the hypoperfusion index obtained on MR perfusion, and to investigate presence of pseudo-occlusion using the second phase of CE-MRA.</p><p><strong>Material and methods: </strong>A retrospective study was conducted. CE-MRA of the brain/neck, dynamic susceptibility contrast (DSC) MR perfusion scan (in majority) and subsequent digital subtraction angiography (DSA) were evaluated in patients with previous acute internal carotid artery (ICA)/middle cerebral artery (MCA) occlusion. Evaluation of CE-MRA/MR perfusion and DSA was performed by three experienced neuroradiologists and one neurointerventionist, respectively.</p><p><strong>Results: </strong>The site of ICA occlusion was seen to be distal to the site noted on early arterial phase (pseudo-occlusion of ICA) in 28.5% of patients. A significant negative correlation was seen between a higher HIR and collateral score.</p><p><strong>Conclusion: </strong>Evaluation of second phase CE-MRA can provide valuable information that may be otherwise lost if only the early arterial phase is evaluated.</p>","PeriodicalId":7143,"journal":{"name":"Acta radiologica","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta radiologica","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1177/02841851241290728","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING","Score":null,"Total":0}
引用次数: 0

Abstract

Background: Double-concentration magnetic resonance imaging (MRI) contrast agents are frequently used in contrast-enhanced MR angiography (CE-MRA) of the head and neck. To avoid mistiming the peak concentration of intraluminal contrast (due to shorter duration of peak), a second acquisition is sometimes performed.

Purpose: To evaluate additional information from the second acquisition of CE-MRA and compare the collateral scoring to the hypoperfusion index obtained on MR perfusion, and to investigate presence of pseudo-occlusion using the second phase of CE-MRA.

Material and methods: A retrospective study was conducted. CE-MRA of the brain/neck, dynamic susceptibility contrast (DSC) MR perfusion scan (in majority) and subsequent digital subtraction angiography (DSA) were evaluated in patients with previous acute internal carotid artery (ICA)/middle cerebral artery (MCA) occlusion. Evaluation of CE-MRA/MR perfusion and DSA was performed by three experienced neuroradiologists and one neurointerventionist, respectively.

Results: The site of ICA occlusion was seen to be distal to the site noted on early arterial phase (pseudo-occlusion of ICA) in 28.5% of patients. A significant negative correlation was seen between a higher HIR and collateral score.

Conclusion: Evaluation of second phase CE-MRA can provide valuable information that may be otherwise lost if only the early arterial phase is evaluated.

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
颈部对比增强 MRA 的第二阶段能否为急性卒中提供更多信息?
背景:双浓度磁共振成像(MRI)造影剂经常用于头颈部造影剂增强磁共振血管成像(CE-MRA)。目的:评估 CE-MRA 第二次采集的额外信息,并将侧支评分与 MR 灌注获得的低灌注指数进行比较,同时利用 CE-MRA 的第二阶段调查是否存在假性闭塞:材料和方法:进行了一项回顾性研究。对既往患有急性颈内动脉(ICA)/大脑中动脉(MCA)闭塞的患者进行了脑/颈部 CE-MRA、动态感性对比(DSC)磁共振灌注扫描(多数)和随后的数字减影血管造影(DSA)评估。CE-MRA/MR灌注和DSA的评估分别由三位经验丰富的神经放射学专家和一位神经介入专家完成:结果:28.5% 的患者的 ICA 闭塞部位位于早期动脉期发现的部位的远端(ICA 假性闭塞)。HIR较高与侧支评分之间呈明显负相关:结论:对第二阶段 CE-MRA 的评估可以提供有价值的信息,而如果只评估早期动脉阶段,这些信息可能会丢失。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Acta radiologica
Acta radiologica 医学-核医学
CiteScore
2.70
自引率
0.00%
发文量
170
审稿时长
3-8 weeks
期刊介绍: Acta Radiologica publishes articles on all aspects of radiology, from clinical radiology to experimental work. It is known for articles based on experimental work and contrast media research, giving priority to scientific original papers. The distinguished international editorial board also invite review articles, short communications and technical and instrumental notes.
期刊最新文献
A survey of bridging bone on chest radiography shows a greater than expected prevalence of marginal syndesmophytes. Can the second phase of contrast-enhanced MRA of the neck provide additional information in the acute stroke setting? Inter-reader agreement of LI-RADS treatment response algorithm among three readers with different seniorities for hepatocellular carcinoma after locoregional therapy. Visual assessment of cerebrospinal fluid flow dynamics using 3D T2-weighted SPACE sequence-based classification system. Correlation between common iliac vein geometry and the risk of deep vein thrombosis in patients with May-Thurner syndrome.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1