Delayed fenestration of Blake's pouch with or without vermian hypoplasia: fetal MRI at 3 tesla versus 1.5 tesla.

Q3 Medicine
Cerebellum and Ataxias Pub Date : 2019-03-05 eCollection Date: 2019-01-01 DOI:10.1186/s40673-019-0098-1
Thomas Kau, Robert Birnbacher, Peter Schwärzler, Sandra Habernig, Hannes Deutschmann, Eugen Boltshauser
{"title":"Delayed fenestration of Blake's pouch with or without vermian hypoplasia: fetal MRI at 3 tesla versus 1.5 tesla.","authors":"Thomas Kau,&nbsp;Robert Birnbacher,&nbsp;Peter Schwärzler,&nbsp;Sandra Habernig,&nbsp;Hannes Deutschmann,&nbsp;Eugen Boltshauser","doi":"10.1186/s40673-019-0098-1","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Fetal magnetic resonance imaging (MRI), mainly performed at standard field strength, plays a role in the classification of posterior fossa malformations. In the context of early second-trimester screening, upward rotation of the cerebellar vermis per se is usually compatible with a more favorable outcome than Dandy-Walker malformation and profound vermian hypoplasia. Delayed fenestration of Blake's pouch may either mimic vermian hypoplasia by compression or be associated with it in individual cases. To increase specificity, there is a growing interest in the use of high-field MRI which is believed to be safe as long as the specific absorption rate is kept within accepted limits. We aim to illustrate its added value during the second and third trimester.</p><p><strong>Case presentation: </strong>In the first case, fetal MRI at 1.5 Tesla was performed at 21 and 27 weeks' gestation with sonographic follow up postnataly. In the second case, 3 Tesla MR images were acquired at 21 and 34 weeks' gestation as well as in the neonatal period.</p><p><strong>Conclusions: </strong>This pictorial case vignette supports the suggestion that mid-gestational MRI at 3 Tesla has the potential to exclude pronounced vermian hypoplasia with higher confidence than at 1.5 Tesla. However, the discrimination of mild hypoplasia from slight deformation of the cerebellar vermis will likely remain challenging.</p>","PeriodicalId":36752,"journal":{"name":"Cerebellum and Ataxias","volume":"6 ","pages":"4"},"PeriodicalIF":0.0000,"publicationDate":"2019-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1186/s40673-019-0098-1","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cerebellum and Ataxias","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1186/s40673-019-0098-1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2019/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 5

Abstract

Background: Fetal magnetic resonance imaging (MRI), mainly performed at standard field strength, plays a role in the classification of posterior fossa malformations. In the context of early second-trimester screening, upward rotation of the cerebellar vermis per se is usually compatible with a more favorable outcome than Dandy-Walker malformation and profound vermian hypoplasia. Delayed fenestration of Blake's pouch may either mimic vermian hypoplasia by compression or be associated with it in individual cases. To increase specificity, there is a growing interest in the use of high-field MRI which is believed to be safe as long as the specific absorption rate is kept within accepted limits. We aim to illustrate its added value during the second and third trimester.

Case presentation: In the first case, fetal MRI at 1.5 Tesla was performed at 21 and 27 weeks' gestation with sonographic follow up postnataly. In the second case, 3 Tesla MR images were acquired at 21 and 34 weeks' gestation as well as in the neonatal period.

Conclusions: This pictorial case vignette supports the suggestion that mid-gestational MRI at 3 Tesla has the potential to exclude pronounced vermian hypoplasia with higher confidence than at 1.5 Tesla. However, the discrimination of mild hypoplasia from slight deformation of the cerebellar vermis will likely remain challenging.

Abstract Image

Abstract Image

伴或不伴蠕虫发育不全的布雷克囊延迟开窗:3特斯拉与1.5特斯拉的胎儿MRI。
背景:胎儿磁共振成像(MRI)主要在标准场强下进行,对后窝畸形的分类有重要作用。在早期妊娠中期筛查的背景下,小脑蚓体本身向上旋转通常比Dandy-Walker畸形和深度蚓体发育不全具有更有利的结果。布雷克眼袋的延迟开窗可能通过压迫模仿蠕虫发育不全或在个别病例中与之相关。为了提高特异性,人们对使用高场MRI越来越感兴趣,只要特定吸收率保持在可接受的范围内,高场MRI被认为是安全的。我们的目的是说明其附加值在第二和第三个三个月。病例介绍:第一例在妊娠21周和27周进行1.5 Tesla的胎儿MRI检查,并在出生后进行超声随访。在第二例中,在妊娠21周和34周以及新生儿期获得了3张特斯拉MR图像。结论:这张图片支持妊娠中期MRI在3特斯拉时比在1.5特斯拉时更有可能排除明显的蠕虫发育不全。然而,区分轻度发育不全和小脑蚓部轻微变形可能仍然具有挑战性。
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 求助全文
来源期刊
Cerebellum and Ataxias
Cerebellum and Ataxias Medicine-Neurology (clinical)
自引率
0.00%
发文量
0
审稿时长
13 weeks
×
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
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
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 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信